B737-300/400 Automatic flight

of 70PT. METRO BATAVIAPT. METRO BATAVIADirectorate of OperationalDirectorate of Operational

737-300/400737-300/400AUTOMATIC FLIGHTAUTOMATIC FLIGHT

(Non-EFIS Panels) (Non-EFIS Panels)

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This 737-300/400 Systems CD was created with the goal of thoroughly reviewing aircraft systems only (fuel, electrical, hydraulics etc.). As a courtesy, our developers have included this Automatic Flight presentation, which is a very brief description of the Mode Control Panel (MCP), Autopilot and Autothrottle. If you desire a detailed presentation on the Automatic Flight system, we recommend purchasing software which is dedicated to this subject matter. Thank you!


Instrument PanelsInstrument Panels

Mode Control Panel (MCP)Mode Control Panel (MCP)



The MCP provides the pilots with a central control panel to operate the autopilots (A/P), The MCP provides the pilots with a central control panel to operate the autopilots (A/P), autothrottle (A/T), and flight directors (F/D).autothrottle (A/T), and flight directors (F/D).

The Autopilot Flight Director System (AFDS) is a dual system consisting of two individual The Autopilot Flight Director System (AFDS) is a dual system consisting of two individual flight control computers (FCCs) and a single mode control panel (MCP).flight control computers (FCCs) and a single mode control panel (MCP).

See picture of See picture of flight control computersflight control computers



The switches on the panel are pressed to select desired command modes. When selected, The switches on the panel are pressed to select desired command modes. When selected, the switch illuminates to indicate that the mode has been selected. Illumination of the switch the switch illuminates to indicate that the mode has been selected. Illumination of the switch also indicates that the mode can be deselected by pressing the switch again. While a mode also indicates that the mode can be deselected by pressing the switch again. While a mode is active, it is possible for de-selection of that mode to be automatically inhibited. This is is active, it is possible for de-selection of that mode to be automatically inhibited. This is indicated by the respective switch being extinguished.indicated by the respective switch being extinguished.

When engagement of a mode would be in conflict with the current operation, pressing the When engagement of a mode would be in conflict with the current operation, pressing the switch has no effect. All modes can be disengaged either by selecting another mode or by switch has no effect. All modes can be disengaged either by selecting another mode or by disengaging the A/P and turning the F/D’s off.disengaging the A/P and turning the F/D’s off.


Mode Control Panel (MCP)Mode Control Panel (MCP)Speed ControlsSpeed Controls

The A/T system provides automatic thrust control from the beginning of takeoff, through climb, The A/T system provides automatic thrust control from the beginning of takeoff, through climb, cruise, descent, approach, and landing or go-around. Both thrust levers incorporate a separate cruise, descent, approach, and landing or go-around. Both thrust levers incorporate a separate servo motor. The A/T system automatically moves the thrust levers forward and aft via these servo motor. The A/T system automatically moves the thrust levers forward and aft via these servo motors.servo motors.

Manually repositioning the thrust levers does not cause A/T disengagement unless 10Manually repositioning the thrust levers does not cause A/T disengagement unless 10° of thrust ° of thrust lever separation is exceeded during a dual channel approach after FLARE armed is annunciated. lever separation is exceeded during a dual channel approach after FLARE armed is annunciated. Following manual repositioning, the A/T system may automatically reposition the thrust levers to Following manual repositioning, the A/T system may automatically reposition the thrust levers to comply with computed thrust requirements, except while in the THR HLD and ARM modes.comply with computed thrust requirements, except while in the THR HLD and ARM modes.



A/T ARM Switch:A/T ARM Switch:ARM –ARM –Arms the A/T for engagement. Switch is magnetically held in the ARM position. With the switch in Arms the A/T for engagement. Switch is magnetically held in the ARM position. With the switch in the ARM position, the A/T will engage automatically when the following modes are engaged: the ARM position, the A/T will engage automatically when the following modes are engaged: LVL CHG, ALT ACQ, V/S, VNAV, ALT HOLD, G/S capture, and TO/GA.LVL CHG, ALT ACQ, V/S, VNAV, ALT HOLD, G/S capture, and TO/GA.OFF –OFF –Disengages A/T and prevents automatic A/T engagement.Disengages A/T and prevents automatic A/T engagement.Any of the following actions or conditions will automatically disengage the A/T:Any of the following actions or conditions will automatically disengage the A/T:• Moving the A/T ARM switch to OFF.Moving the A/T ARM switch to OFF.• Pressing either A/T disengage switch.Pressing either A/T disengage switch.• Two seconds have elapsed since touchdown.Two seconds have elapsed since touchdown.• Thrust levers separate more than 10Thrust levers separate more than 10° during a dual channel approach ° during a dual channel approach (after FLARE armed is annunciated)(after FLARE armed is annunciated)..• The A/T system has detected a fault.The A/T system has detected a fault.



Autothrottle Indicator Light:Autothrottle Indicator Light:Illuminated –Illuminated –A/T ARM switch in the ARM position.A/T ARM switch in the ARM position.



IAS/MACH Display:IAS/MACH Display:• Displays speed selected by speed selector.Displays speed selected by speed selector.• Displays 110 knots when power is first applied.Displays 110 knots when power is first applied.• Display is blank when:Display is blank when:

VNAV mode is engagedVNAV mode is engaged A/T engaged in FMC SPD modeA/T engaged in FMC SPD mode During a two engine automatic go-aroundDuring a two engine automatic go-around

• Display range is:Display range is: 110 KIAS to V110 KIAS to Vmomo in 1 knot increments in 1 knot increments .60M to M.60M to Mmomo in .01M increments in .01M increments



MCP Speed Condition Symbols:MCP Speed Condition Symbols:Overspeed or underspeed limiting symbols appear when commanded speed cannot be Overspeed or underspeed limiting symbols appear when commanded speed cannot be achieved.achieved.• Underspeed limiting (flashing “A” character):Underspeed limiting (flashing “A” character):

minimum speedminimum speed• Overspeed limiting (flashing “8” character):Overspeed limiting (flashing “8” character):

VVmomo or M or Mmomo limit limit Landing gear limitLanding gear limit Flap limitFlap limit



Speed Selector:Speed Selector:Rotate –Rotate –• Sets speed in IAS/MACH display and positions airspeed cursor.Sets speed in IAS/MACH display and positions airspeed cursor.• Selected speed is reference speed for A/T.Selected speed is reference speed for A/T.• Not operative when IAS/MACH display is blank.Not operative when IAS/MACH display is blank.



C/O (change over) Switch:C/O (change over) Switch:• Changes IAS/MACH display from IAS to MACH, and visa-versa.Changes IAS/MACH display from IAS to MACH, and visa-versa.• Automatic changeover occurs at approximately FL260.Automatic changeover occurs at approximately FL260.



The N1 mode signals the A/T to maintain thrust at the N1 selected from the FMC CDU’s. The The N1 mode signals the A/T to maintain thrust at the N1 selected from the FMC CDU’s. The N1 mode will N1 mode will automaticallyautomatically engage when engaging LVL CHG in a climb (except for first 2.5 engage when engaging LVL CHG in a climb (except for first 2.5 minutes after liftoff) or when engaging VNAV in a climb.minutes after liftoff) or when engaging VNAV in a climb.

N1 Switch:N1 Switch:Push (with light currently not illuminated) –Push (with light currently not illuminated) –• Illuminates N1 switch light.Illuminates N1 switch light.• Engages A/T in N1 mode if compatible with modes already engaged.Engages A/T in N1 mode if compatible with modes already engaged.• Annunciates N1 on the A/T portion of the flight mode annunciator.Annunciates N1 on the A/T portion of the flight mode annunciator.

Push (with light currently illuminated) –Push (with light currently illuminated) –• Engages A/T in ARM mode.Engages A/T in ARM mode.• Deselects N1 mode and extinguishes N1 switch light.Deselects N1 mode and extinguishes N1 switch light.



The SPEED mode signals the A/T to maintain the speed selected in the IAS/MACH display, or The SPEED mode signals the A/T to maintain the speed selected in the IAS/MACH display, or a performance or limit speed. The SPEED mode will a performance or limit speed. The SPEED mode will automaticallyautomatically engage when ALT ACQ engage when ALT ACQ engages, ALT HOLD engages, V/S engages, or G/S capture occurs.engages, ALT HOLD engages, V/S engages, or G/S capture occurs.

SPEED Switch:SPEED Switch:Push (with light currently not illuminated) –Push (with light currently not illuminated) –• Illuminates SPEED switch light.Illuminates SPEED switch light.• Engages A/T in SPEED mode if compatible with modes already engaged.Engages A/T in SPEED mode if compatible with modes already engaged.• Annunciates MCP SPD on the A/T portion of the flight mode annunciator.Annunciates MCP SPD on the A/T portion of the flight mode annunciator.

Push (with light currently illuminated) –Push (with light currently illuminated) –• Engages A/T in ARM mode.Engages A/T in ARM mode.• Deselects SPEED mode and extinguishes SPEED switch light.Deselects SPEED mode and extinguishes SPEED switch light.


Mode Control Panel (MCP)Mode Control Panel (MCP)Vertical NavigationVertical Navigation

The VNAV (vertical navigation) mode commands the AFDS to fly the vertical profile selected on The VNAV (vertical navigation) mode commands the AFDS to fly the vertical profile selected on the FMC CDU’s by controlling the A/T and aircraft pitch. The vertical profile includes climb, the FMC CDU’s by controlling the A/T and aircraft pitch. The vertical profile includes climb, cruise, descent, speeds, and can also include waypoint altitude constraints.cruise, descent, speeds, and can also include waypoint altitude constraints.

VNAV Switch:VNAV Switch:Push –Push –• Illuminates VNAV switch light.Illuminates VNAV switch light.• Annunciates VNAV SPD or VNAV PTH on the AFDS portion of the flight mode annunciator.Annunciates VNAV SPD or VNAV PTH on the AFDS portion of the flight mode annunciator.• Annunciates FMC SPD, N1, RETARD, or ARM on the A/T portion of the flight mode annunciator.Annunciates FMC SPD, N1, RETARD, or ARM on the A/T portion of the flight mode annunciator.• IAS/MACH display blanks and airspeed cursors are positioned to FMC commanded speed.IAS/MACH display blanks and airspeed cursors are positioned to FMC commanded speed.



The LVL CHG (level change) mode coordinates pitch and thrust commands to automatically climb The LVL CHG (level change) mode coordinates pitch and thrust commands to automatically climb and descend to pre-selected altitudes at pre-selected airspeeds.and descend to pre-selected altitudes at pre-selected airspeeds.

LVL CHG Switch:LVL CHG Switch:Push –Push –• Illuminates LVL CHG switch light.Illuminates LVL CHG switch light.• Annunciates MCP SPD, for climb or descent, on the AFDS portion of the flight mode Annunciates MCP SPD, for climb or descent, on the AFDS portion of the flight mode annunciator.annunciator.• Annunciates N1 for climb, and RETARD followed by ARM for descent, on the A/T portion of the Annunciates N1 for climb, and RETARD followed by ARM for descent, on the A/T portion of the flight mode annunciator.flight mode annunciator.• IAS/MACH display and airspeed cursors move to target speed.IAS/MACH display and airspeed cursors move to target speed.



ALTITUDE Display:ALTITUDE Display:• Displays selected altitude.Displays selected altitude.• Displayed altitude is reference for altitude alerting and automatic level-offs.Displayed altitude is reference for altitude alerting and automatic level-offs.• Altitude range is 0 to 50,000 feet, in increments of 100 feet.Altitude range is 0 to 50,000 feet, in increments of 100 feet.• Displays previously selected altitude when power is first applied.Displays previously selected altitude when power is first applied.



ALTITUDE Selector:ALTITUDE Selector:• Sets altitude in ALTITUDE display in increments of 100 feet.Sets altitude in ALTITUDE display in increments of 100 feet.• Arms V/S mode if, while in the ALT HOLD mode at selected altitude, a new MCP altitude is Arms V/S mode if, while in the ALT HOLD mode at selected altitude, a new MCP altitude is selected which is more than 100 feet from current altitude.selected which is more than 100 feet from current altitude.



The ALT HLD (altitude hold) mode commands pitch to hold either the MCP selected altitude or the The ALT HLD (altitude hold) mode commands pitch to hold either the MCP selected altitude or the uncorrected barometric altitude at which the ALT HLD switch was pressed (if not at MCP altitude). uncorrected barometric altitude at which the ALT HLD switch was pressed (if not at MCP altitude).

ALT HLD Switch:ALT HLD Switch:Push –Push –• Illuminates ALT HLD switch light.Illuminates ALT HLD switch light.• Engages ALT HLD mode.Engages ALT HLD mode.• Commands pitch to hold uncorrected barometric altitude at which switch was pressed.Commands pitch to hold uncorrected barometric altitude at which switch was pressed.• Annunciates ALT HLD on the AFDS portion of the flight mode annunciator.Annunciates ALT HLD on the AFDS portion of the flight mode annunciator.

Note: ALT HLD mode is inhibited after glideslope capture.Note: ALT HLD mode is inhibited after glideslope capture.



The V/S (vertical speed) mode commands pitch to hold the selected vertical speed and engages The V/S (vertical speed) mode commands pitch to hold the selected vertical speed and engages the A/T in SPEED mode to hold selected airspeed. V/S has both an “armed” and “engaged” state. the A/T in SPEED mode to hold selected airspeed. V/S has both an “armed” and “engaged” state. The V/S mode automatically arms if the aircraft is currently in the ALT HLD mode at the selected The V/S mode automatically arms if the aircraft is currently in the ALT HLD mode at the selected MCP altitude, and a new MCP altitude is selected which is more than 100 feet from current MCP altitude, and a new MCP altitude is selected which is more than 100 feet from current altitude. With V/S now armed, V/S may be engaged by simply rotating the vertical speed altitude. With V/S now armed, V/S may be engaged by simply rotating the vertical speed thumbwheel. Caution: Vertical speeds may be selected which command the aircraft away from thumbwheel. Caution: Vertical speeds may be selected which command the aircraft away from desired altitude.desired altitude.

V/S Switch:V/S Switch:Push –Push –• Illuminates V/S switch light.Illuminates V/S switch light.• Arms or engages V/S mode.Arms or engages V/S mode.• Commands pitch to hold vertical speed.Commands pitch to hold vertical speed.• Engages A/T in SPEED mode to hold selected vertical speed.Engages A/T in SPEED mode to hold selected vertical speed.• Annunciates V/S on the AFDS portion of the flight mode annunciator.Annunciates V/S on the AFDS portion of the flight mode annunciator.



VERT SPEED Display:VERT SPEED Display:Displays -Displays -• Blank when V/S mode is not active.Blank when V/S mode is not active.• Present V/S when V/S mode is engaged by pressing V/S switch.Present V/S when V/S mode is engaged by pressing V/S switch.• Selected V/S when V/S is set by rotating vertical speed thumbwheel.Selected V/S when V/S is set by rotating vertical speed thumbwheel.• Range is from –7,900 fpm to +6,000 fpm.Range is from –7,900 fpm to +6,000 fpm.

Displays in increments of –Displays in increments of –• 50 fpm if V/S is less than 1,000 fpm.50 fpm if V/S is less than 1,000 fpm.• 100 fpm if V/S is 1,000 fpm or greater.100 fpm if V/S is 1,000 fpm or greater.



VERT SPEED Thumbwheel:VERT SPEED Thumbwheel:Rotate –Rotate –• UPUP

• Sets V/S in VERT SPEED display.Sets V/S in VERT SPEED display.• Increases rate of ascent or reduces rate of descent.Increases rate of ascent or reduces rate of descent.

• DOWNDOWN• Sets V/S in VERT SPEED display.Sets V/S in VERT SPEED display.• Increases rate of descent or reduces rate of ascent.Increases rate of descent or reduces rate of ascent.


Mode Control Panel (MCP)Mode Control Panel (MCP)Lateral NavigationLateral Navigation

The LNAV (lateral navigation) mode commands the AFDS to intercept and track the active FMC The LNAV (lateral navigation) mode commands the AFDS to intercept and track the active FMC route. The route is entered and modified via the FMC CDU’s and can include SID’s, STAR’s, and route. The route is entered and modified via the FMC CDU’s and can include SID’s, STAR’s, and instrument approaches. After pressing the LNAV switch, LNAV will engage if an active route has instrument approaches. After pressing the LNAV switch, LNAV will engage if an active route has been entered in the FMC and the aircraft is within 3 NM of the route segment (aircraft heading is been entered in the FMC and the aircraft is within 3 NM of the route segment (aircraft heading is not a factor when within 3 NM of the active route segment). When outside of 3 NM, the aircraft not a factor when within 3 NM of the active route segment). When outside of 3 NM, the aircraft must be on a intercept course of 90must be on a intercept course of 90° or less and intercept the route segment before the active ° or less and intercept the route segment before the active waypoint, in order for LNAV to capture.waypoint, in order for LNAV to capture.

LNAV Switch:LNAV Switch:Push –Push –• Illuminates LNAV switch light.Illuminates LNAV switch light.• Commands AFDS roll to intercept and track the active FMC route. Commands AFDS roll to intercept and track the active FMC route. • Annunciates LNAV on the AFDS portion of the flight mode annunciator.Annunciates LNAV on the AFDS portion of the flight mode annunciator.



The VOR LOC (VOR/LOCALIZER) switch selects the VOR mode if a VOR frequency is tuned or The VOR LOC (VOR/LOCALIZER) switch selects the VOR mode if a VOR frequency is tuned or selects LOC mode if a localizer frequency is tuned. The VOR mode provides roll commands to selects LOC mode if a localizer frequency is tuned. The VOR mode provides roll commands to track the selected VOR course. The LOC mode provides roll commands to track the selected track the selected VOR course. The LOC mode provides roll commands to track the selected localizer course along the inbound front course bearing. The selected course may be intercepted localizer course along the inbound front course bearing. The selected course may be intercepted while engaged in either LNAV, HDG SEL, or CWS R (if an A/P is engaged in CMD).while engaged in either LNAV, HDG SEL, or CWS R (if an A/P is engaged in CMD).

VOR LOC Switch:VOR LOC Switch:Push –Push –• Illuminates VOR LOC switch light.Illuminates VOR LOC switch light.• Commands AFDS roll to capture and track selected VOR or LOC course. Commands AFDS roll to capture and track selected VOR or LOC course. • Annunciates VOR LOC armed or engaged on the AFDS portion of the flight mode annunciator.Annunciates VOR LOC armed or engaged on the AFDS portion of the flight mode annunciator.

Note: Localizer backcourse tracking is not available.Note: Localizer backcourse tracking is not available.



HEADING Display:HEADING Display:• Displays selected heading.Displays selected heading.• Same heading as HSI heading bug.Same heading as HSI heading bug.



HEADING Selector:HEADING Selector:Rotate –Rotate –• Sets heading in HEADING display.Sets heading in HEADING display.• Positions heading bug on both the Captain’s and First Officer’s HSI.Positions heading bug on both the Captain’s and First Officer’s HSI.



Bank Angle Selector (square knob behind HEADING selector):Bank Angle Selector (square knob behind HEADING selector):Rotate –Rotate –• Sets maximum bank angle for operation in HDG SEL or VOR modes.Sets maximum bank angle for operation in HDG SEL or VOR modes.• Bank angle may be set to to 10Bank angle may be set to to 10°, °, 1515°, °, 2020°, °, 2525°, or °, or 3030°.°.



The HDG SEL mode commands the aircraft to turn to and maintain heading shown in the HEADING The HDG SEL mode commands the aircraft to turn to and maintain heading shown in the HEADING display. Initial selection of the HDG SEL switch commands the aircraft to turn in the shortest display. Initial selection of the HDG SEL switch commands the aircraft to turn in the shortest direction toward selected heading. If HDG SEL mode is currently engaged, roll commands are direction toward selected heading. If HDG SEL mode is currently engaged, roll commands are given to turn the aircraft in the same direction as rotation of the heading selector. HDG SEL mode given to turn the aircraft in the same direction as rotation of the heading selector. HDG SEL mode automatically disengages upon capture of selected radio course in the VOR LOC and APP (VOR automatically disengages upon capture of selected radio course in the VOR LOC and APP (VOR LOC armed) modes.LOC armed) modes.

HDG SEL Switch:HDG SEL Switch:Push –Push –• Illuminates HDG SEL switch light.Illuminates HDG SEL switch light.• Engages HDG SEL mode to follow selected heading. Engages HDG SEL mode to follow selected heading. • Annunciates HDG SEL engaged on the AFDS portion of the flight mode annunciator.Annunciates HDG SEL engaged on the AFDS portion of the flight mode annunciator.



COURSE Display:COURSE Display:Displays course set by course selector.Displays course set by course selector.

Note: Setting two different courses in the COURSE display, and two different frequencies on the Note: Setting two different courses in the COURSE display, and two different frequencies on the VHF NAV receivers, may result in disagreement between the Captain’s and First Officer’s F/D VHF NAV receivers, may result in disagreement between the Captain’s and First Officer’s F/D displays and may also affect A/P operation.displays and may also affect A/P operation.



COURSE Selector:COURSE Selector:Sets course in COURSE display for respective VHF NAV receiver, FCC, and HSI.Sets course in COURSE display for respective VHF NAV receiver, FCC, and HSI.

Rotating the Captain’s course selector provides selected course information to the No. 1 VHF NAV Rotating the Captain’s course selector provides selected course information to the No. 1 VHF NAV receiver, “A” FCC, and Captain’s HSI course pointer and course deviation bar.receiver, “A” FCC, and Captain’s HSI course pointer and course deviation bar.

Note: In the VOR LOC or APP mode, the “A” A/P and Captain’s F/D use selected course and Note: In the VOR LOC or APP mode, the “A” A/P and Captain’s F/D use selected course and navigation data from the No. 1 VHF NAV receiver.navigation data from the No. 1 VHF NAV receiver.

Rotating the First Officer's course selector provides selected course information to the No. 2 VHF Rotating the First Officer's course selector provides selected course information to the No. 2 VHF NAV receiver, “B” FCC, and First Officer's HSI course pointer and course deviation bar.NAV receiver, “B” FCC, and First Officer's HSI course pointer and course deviation bar.

Note: In the VOR LOC or APP mode, the “B” A/P and First Officer's F/D use selected course and Note: In the VOR LOC or APP mode, the “B” A/P and First Officer's F/D use selected course and navigation data from the No. 2 VHF NAV receiver.navigation data from the No. 2 VHF NAV receiver.


Mode Control Panel (MCP)Mode Control Panel (MCP)Lateral and Vertical NavigationLateral and Vertical Navigation

The APP (approach) mode arms the AFDS to capture and track the localizer and glideslope. The APP (approach) mode arms the AFDS to capture and track the localizer and glideslope. APP can be engaged for single or dual A/P operation. One VHF NAV receiver must be tuned to an APP can be engaged for single or dual A/P operation. One VHF NAV receiver must be tuned to an ILS frequency before the APP mode can be engaged. For dual A/P operation, both VHF NAV ILS frequency before the APP mode can be engaged. For dual A/P operation, both VHF NAV receivers must be tuned to the ILS frequency and both A/P’s must be selected to CMD (command) receivers must be tuned to the ILS frequency and both A/P’s must be selected to CMD (command) prior to 800 feet RA. The APP mode is the only mode that will allow both A/P’s to be engaged at the prior to 800 feet RA. The APP mode is the only mode that will allow both A/P’s to be engaged at the same time. same time.

APP Switch:APP Switch:Push –Push –• Illuminates APP switch light.Illuminates APP switch light.• Arms the AFDS for localizer and glideslope capture.Arms the AFDS for localizer and glideslope capture.• Annunciates VOR/LOC armed and G/S armed on the AFDS portion of the flight mode annunciator.Annunciates VOR/LOC armed and G/S armed on the AFDS portion of the flight mode annunciator.• Enables engagement of both A/P’s.Enables engagement of both A/P’s.


Mode Control Panel (MCP)Mode Control Panel (MCP)Autopilot/Flight DirectorAutopilot/Flight Director

Each A/P may be engaged separately in CMD (command) or CWS (control wheel steering). A/P Each A/P may be engaged separately in CMD (command) or CWS (control wheel steering). A/P engagement in CMD or CWS is inhibited unless both of the following pilot-controlled conditions engagement in CMD or CWS is inhibited unless both of the following pilot-controlled conditions are satisfied:are satisfied:• No force applied to the control wheel.No force applied to the control wheel.• The STAB TRIM AUTOPILOT CUTOUT switch is positioned to NORMAL.The STAB TRIM AUTOPILOT CUTOUT switch is positioned to NORMAL.

Only one A/P may be engaged at any given time unless the APP mode is engaged. Dual A/P Only one A/P may be engaged at any given time unless the APP mode is engaged. Dual A/P operation provides aircraft control from the approach through the landing flare and touchdown or operation provides aircraft control from the approach through the landing flare and touchdown or automatic go-around.automatic go-around.

During single A/P operation, full automatic flare and touchdown capability are not available. During single A/P operation, full automatic flare and touchdown capability are not available. Automatic go-around capability is also not available.Automatic go-around capability is also not available.



A/P ENGAGE Paddles:A/P ENGAGE Paddles:• Controls level of A/P engagement.Controls level of A/P engagement.• Three possible selections – Three possible selections –

CMD (command)CMD (command) CWS (control wheel steering)CWS (control wheel steering) OFFOFF



A/P ENGAGE Paddles:A/P ENGAGE Paddles: CMD – CMD – • Engages respective A/P (“A” or “B”) and enables all command modes.Engages respective A/P (“A” or “B”) and enables all command modes.• With one A/P engaged in CMD, selecting second A/P to CMD disengages the first A/P, unless APP With one A/P engaged in CMD, selecting second A/P to CMD disengages the first A/P, unless APP

mode is engaged.mode is engaged.• Enables CWS operation for possible use, and will engage in CWS if:Enables CWS operation for possible use, and will engage in CWS if:

• a pitch or roll mode is not selecteda pitch or roll mode is not selected• a pitch or roll mode is deselecteda pitch or roll mode is deselected• a pitch or roll mode is manually overridden with control column forcea pitch or roll mode is manually overridden with control column force

• If CWS is engaged, CWS PITCH and/or CWS ROLL will be displayed on the A/P STATUS portion of If CWS is engaged, CWS PITCH and/or CWS ROLL will be displayed on the A/P STATUS portion of the flight the flight mode annunciator. Because CWS is controlling pitch and/or roll, the pitch mode annunciator. Because CWS is controlling pitch and/or roll, the pitch

and/or roll and/or roll modes on the AFDS portion of the flight mode annunciator will be blank.modes on the AFDS portion of the flight mode annunciator will be blank.



A/P ENGAGE Paddles:A/P ENGAGE Paddles:CWS – CWS – • Engages respective A/P (“A” or “B”) in CWS pitch and roll modes.Engages respective A/P (“A” or “B”) in CWS pitch and roll modes.• CWS PITCH and CWS ROLL will be displayed on the A/P STATUS portion of the flight mode CWS PITCH and CWS ROLL will be displayed on the A/P STATUS portion of the flight mode annunciator. Because CWS is controlling pitch and roll, the pitch and roll modes on the AFDS annunciator. Because CWS is controlling pitch and roll, the pitch and roll modes on the AFDS portion of the flight mode annunciator will be blank.portion of the flight mode annunciator will be blank.• A/P pitch controlled by pilot applying control column pressure forward or aft. When elevator A/P pitch controlled by pilot applying control column pressure forward or aft. When elevator pressure is released, aircraft will hold existing attitude.pressure is released, aircraft will hold existing attitude.• A/P roll controlled by pilot applying control wheel pressure left or right. If aileron pressure is A/P roll controlled by pilot applying control wheel pressure left or right. If aileron pressure is released with a bank of 6released with a bank of 6° or less, A/P will roll wings level and hold existing heading.° or less, A/P will roll wings level and hold existing heading.



A/P ENGAGE Paddles:A/P ENGAGE Paddles:OFF – OFF – • Disengages A/P’s.Disengages A/P’s.



The left F/D switch activates F/D bars (command bars) on Captain’s ADI. The right F/D switch The left F/D switch activates F/D bars (command bars) on Captain’s ADI. The right F/D switch activates F/D bars (command bars) on First Officer’s ADI. F/D bars will be displayed on respective activates F/D bars (command bars) on First Officer’s ADI. F/D bars will be displayed on respective ADI if pitch and/or roll modes are engaged. If pitch and/or roll modes are not engaged, the F/D ADI if pitch and/or roll modes are engaged. If pitch and/or roll modes are not engaged, the F/D bars do not appear.bars do not appear.

The F/D’s may be operated with or without the A/P and A/T. F/D command modes may also be The F/D’s may be operated with or without the A/P and A/T. F/D command modes may also be used with an A/P engaged in CWS.used with an A/P engaged in CWS.

F/D commands operate in the same modes as the A/P except:F/D commands operate in the same modes as the A/P except:• The TO (takeoff) mode is a F/D mode only (i.e. the A/P cannot be used for takeoff).The TO (takeoff) mode is a F/D mode only (i.e. the A/P cannot be used for takeoff).• Dual F/D guidance is available even during single engine operations.Dual F/D guidance is available even during single engine operations.• The F/D retracts from view at approximately 50 feet RA on an ILS approach. Therefore, the F/D’s The F/D retracts from view at approximately 50 feet RA on an ILS approach. Therefore, the F/D’s

do not have have the ability to indicate landing flare.do not have have the ability to indicate landing flare.



F/D (Flight Director) Switches:F/D (Flight Director) Switches:ON –ON –• Enables flight director bars to be displayed on respective ADI. Flight director bars will be Enables flight director bars to be displayed on respective ADI. Flight director bars will be displayed if pitch and/or roll modes are engaged. displayed if pitch and/or roll modes are engaged. • On the ground, when TO/GA switch is pushed, arms pitch and roll modes for engagement in On the ground, when TO/GA switch is pushed, arms pitch and roll modes for engagement in TO/GA and HDG SEL modes.TO/GA and HDG SEL modes.• In flight with A/P ON and F/D’s OFF, positioning a F/D switch to ON engages respective F/D in In flight with A/P ON and F/D’s OFF, positioning a F/D switch to ON engages respective F/D in the modes currently being utilized by the A/P’s.the modes currently being utilized by the A/P’s.

OFF – OFF – • Flight director bars retract from respective ADI.Flight director bars retract from respective ADI.



Master (MA) Flight Director Indicators:Master (MA) Flight Director Indicators:Normally, the “A” FCC drives the Captain’s F/D bars and the “B” FCC drives the First Officer’s F/D Normally, the “A” FCC drives the Captain’s F/D bars and the “B” FCC drives the First Officer’s F/D bars. However, with both F/D switches ON, the logic for both pilot’s F/D modes are controlled by bars. However, with both F/D switches ON, the logic for both pilot’s F/D modes are controlled by the master FCC. the master FCC. The master FCC is indicated by illumination of the respective master (MA) F/D indicator light (the The master FCC is indicated by illumination of the respective master (MA) F/D indicator light (the MCP panel pictured above indicates the “A” FCC is the master). The master FCC is determined as MCP panel pictured above indicates the “A” FCC is the master). The master FCC is determined as follows:follows:• With With neitherneither A/P currently engaged in CMD, the FCC for the first A/P currently engaged in CMD, the FCC for the first F/DF/D selected ON is the selected ON is the master FCC.master FCC.• With With one or bothone or both A/P’s currently engaged in CMD, the FCC for the first A/P’s currently engaged in CMD, the FCC for the first A/PA/P selected to CMD is the selected to CMD is the

master FCC; regardless of which F/D switch is selected ON first.master FCC; regardless of which F/D switch is selected ON first.Note: Once a master FCC has been determined, the same status modes will be displayed on both Note: Once a master FCC has been determined, the same status modes will be displayed on both the Captain’s and First Officer’s flight mode annunciators.the Captain’s and First Officer’s flight mode annunciators.



Master (MA) Flight Director Indicators:Master (MA) Flight Director Indicators:Independent F/D operation is indicated by illumination of both master (MA) F/D indicator lights. Independent F/D operation is indicated by illumination of both master (MA) F/D indicator lights. During independent F/D operation, the F/D modes are controlled directly from the respective FCC During independent F/D operation, the F/D modes are controlled directly from the respective FCC (“A” or “B”) under certain conditions.(“A” or “B”) under certain conditions.

Independent F/D operationIndependent F/D operation occurs when neither A/P is engaged in CMD, both F/D switches are occurs when neither A/P is engaged in CMD, both F/D switches are selected ON, and one of the following mode conditions exists:selected ON, and one of the following mode conditions exists:• The APP mode is engaged with LOC and G/S captured.The APP mode is engaged with LOC and G/S captured.• GA mode engaged (by pressing TO/GA buttons) below 400 ft. RA.GA mode engaged (by pressing TO/GA buttons) below 400 ft. RA.• TO mode engaged (by pressing TO/GA buttons) below 400 ft. RA.TO mode engaged (by pressing TO/GA buttons) below 400 ft. RA.

Note: It is the opening of the TRNote: It is the opening of the TR33 disconnect relay that actually signals independent F/D operation. disconnect relay that actually signals independent F/D operation. When the TRWhen the TR33 disconnect relay opens, this isolates the two DC power sources to the FCC’s. This disconnect relay opens, this isolates the two DC power sources to the FCC’s. This isolation will prevent a failure of one DC bus from possibly causing the other DC bus to fail in a isolation will prevent a failure of one DC bus from possibly causing the other DC bus to fail in a way which could result in erroneous flight director displays.way which could result in erroneous flight director displays.



Master (MA) Flight Director Indicators:Master (MA) Flight Director Indicators:The MA flight director light logic is summarized below…The MA flight director light logic is summarized below…

If a F/D switch is in the ON position, the illumination of the associated MA light indicates that the If a F/D switch is in the ON position, the illumination of the associated MA light indicates that the respective FCC is the master, and therefore is controlling the both F/D modes. respective FCC is the master, and therefore is controlling the both F/D modes.

If a F/D switch is in the ON position and the associated MA light is extinguished, the F/D modes for If a F/D switch is in the ON position and the associated MA light is extinguished, the F/D modes for the respective F/D are being controlled by the opposite FCC.the respective F/D are being controlled by the opposite FCC.

Looking at the MCP above, it can be determined that the “A” FCC is the master, and the “B” FCC is Looking at the MCP above, it can be determined that the “A” FCC is the master, and the “B” FCC is not the master. The “A” FCC is controlling the F/D modes for both the Captain’s and First Officer’s not the master. The “A” FCC is controlling the F/D modes for both the Captain’s and First Officer’s F/D. However, if the First Officer’s MA light was also illuminated in the picture above, this would F/D. However, if the First Officer’s MA light was also illuminated in the picture above, this would indicate independent F/D operation. As a result, the F/D modes would be controlled directly from indicate independent F/D operation. As a result, the F/D modes would be controlled directly from the respective FCC.the respective FCC.

This concludes the review of the MCP. The next section will discuss theThis concludes the review of the MCP. The next section will discuss theFlight Mode Annunciator (FMA) and various other automatic flight topics. Click Flight Mode Annunciator (FMA) and various other automatic flight topics. Click NextNext to continue. to continue.



Flight Mode Annunciators (FMA)Flight Mode Annunciators (FMA)


Flight Mode Annunciators (FMA)Flight Mode Annunciators (FMA)The FMA’s are comprised of 19 prismatic The FMA’s are comprised of 19 prismatic annunciators that indicate the operating modes of annunciators that indicate the operating modes of the AFDS, A/T and FMC N1 LIMIT. The prismatic the AFDS, A/T and FMC N1 LIMIT. The prismatic annunciators rotate 120annunciators rotate 120°° along their longitudinal axis along their longitudinal axis to indicate the current operating mode. The to indicate the current operating mode. The following slides will briefly describe each mode.following slides will briefly describe each mode.


Flight Mode Annunciators (FMA)Flight Mode Annunciators (FMA)AFDS Pitch Modes:AFDS Pitch Modes:V/S (armed) –V/S (armed) –V/S mode may be engaged by moving vertical speed V/S mode may be engaged by moving vertical speed thumbwheel.thumbwheel.

G/S (armed) –G/S (armed) –The AFDS is armed for G/S capture.The AFDS is armed for G/S capture.


Flight Mode Annunciators (FMA)Flight Mode Annunciators (FMA)AFDS Pitch Modes:AFDS Pitch Modes:V/S (engaged) –V/S (engaged) –Pitch commands hold selected vertical speed.Pitch commands hold selected vertical speed.

G/S (engaged) –G/S (engaged) –The AFDS follows the ILS glideslope.The AFDS follows the ILS glideslope.


Flight Mode Annunciators (FMA)Flight Mode Annunciators (FMA)AFDS Pitch Modes:AFDS Pitch Modes:ALT ACQ –ALT ACQ –Transition maneuver entered automatically from a Transition maneuver entered automatically from a V/S, LVL CHG or VNAV climb or descent to selected V/S, LVL CHG or VNAV climb or descent to selected MCP altitude. Engages, but does not annunciate, MCP altitude. Engages, but does not annunciate, during a VNAV transition.during a VNAV transition.

MCP SPD –MCP SPD –Pitch commands maintain airspeed/MACH indicated Pitch commands maintain airspeed/MACH indicated in IAS/MACH display.in IAS/MACH display.


Flight Mode Annunciators (FMA)Flight Mode Annunciators (FMA)AFDS Pitch Modes:AFDS Pitch Modes:ALT HLD –ALT HLD –Pitch commands to hold either the MCP selected Pitch commands to hold either the MCP selected altitude or the uncorrected barometric altitude at altitude or the uncorrected barometric altitude at which the ALT HLD switch was pressed (if not at which the ALT HLD switch was pressed (if not at MCP altitude). MCP altitude).


Flight Mode Annunciators (FMA)Flight Mode Annunciators (FMA)AFDS Pitch Modes:AFDS Pitch Modes:VNAV PTH –VNAV PTH –The AFDS maintains FMC altitude or descent path The AFDS maintains FMC altitude or descent path with pitch commands.with pitch commands.


Flight Mode Annunciators (FMA)Flight Mode Annunciators (FMA)AFDS Pitch Modes:AFDS Pitch Modes:VNAV SPD –VNAV SPD –The AFDS maintains the FMC speed displayed on the The AFDS maintains the FMC speed displayed on the airspeed cursor and/or the CDU CLIMB or DESCENT airspeed cursor and/or the CDU CLIMB or DESCENT pages.pages.


Flight Mode Annunciators (FMA)Flight Mode Annunciators (FMA)AFDS Pitch Modes:AFDS Pitch Modes:TO/GA (for takeoff) –TO/GA (for takeoff) –Engaged for takeoff by positioning both F/D switches Engaged for takeoff by positioning both F/D switches to ON and pressing either TO/GA switch. to ON and pressing either TO/GA switch. BothBoth F/D’s F/D’s must be ON in order to engage TO/GA must be ON in order to engage TO/GA priorprior to to starting takeoff.starting takeoff.

The AFDS commands pitch attitude in the following The AFDS commands pitch attitude in the following order:order:• 1010° nose down until 60 knots IAS.° nose down until 60 knots IAS.• 15° nose up after 60 knots IAS.15° nose up after 60 knots IAS.• 15° nose up after liftoff until a sufficient climb rate 15° nose up after liftoff until a sufficient climb rate

is established. Then pitch is commanded to is established. Then pitch is commanded to maintain MCP speed plus 20 knots.maintain MCP speed plus 20 knots.


Flight Mode Annunciators (FMA)Flight Mode Annunciators (FMA)AFDS Pitch Modes:AFDS Pitch Modes:TO/GA (for go-around) –TO/GA (for go-around) –Engaged for go-around by pressing either TO/GA Engaged for go-around by pressing either TO/GA switch under the following conditions:switch under the following conditions:

• Not in the takeoff mode.Not in the takeoff mode.• In flight below 2,000 feet RA.In flight below 2,000 feet RA.• Either F/D ON or OFF.Either F/D ON or OFF.

The F/D’s command 15° nose up pitch and roll to The F/D’s command 15° nose up pitch and roll to hold the approach ground track at time of go-around hold the approach ground track at time of go-around engagement. After establishing a programmed rate engagement. After establishing a programmed rate of climb, pitch commands the maneuvering speed of climb, pitch commands the maneuvering speed for each flap setting based on maximum weight for each flap setting based on maximum weight calculations.calculations.

Note: In order to perform an automatic autopilot Note: In order to perform an automatic autopilot go-around, both A/P’s must be in CMD prior to go-around, both A/P’s must be in CMD prior to pressing either TO/GA switch.pressing either TO/GA switch.


Flight Mode Annunciators (FMA)Flight Mode Annunciators (FMA)AFDS Pitch Modes:AFDS Pitch Modes:FLARE (armed) –FLARE (armed) –During a dual channel ILS approach, FLARE is armed During a dual channel ILS approach, FLARE is armed after LOC and G/S capture and below 1,500 feet RA. after LOC and G/S capture and below 1,500 feet RA. Once FLARE is armed, the second A/P couples with Once FLARE is armed, the second A/P couples with the flight controls and A/P go-around mode arms the flight controls and A/P go-around mode arms (but is not annunciated on the FMA).(but is not annunciated on the FMA).


Flight Mode Annunciators (FMA)Flight Mode Annunciators (FMA)AFDS Pitch Modes:AFDS Pitch Modes:FLARE (engaged) –FLARE (engaged) –During a dual channel ILS approach, FLARE engages During a dual channel ILS approach, FLARE engages at 50 feet RA. FLARE accomplishes the autoland at 50 feet RA. FLARE accomplishes the autoland flare maneuver.flare maneuver.


Flight Mode Annunciators (FMA)Flight Mode Annunciators (FMA)AFDS Roll Modes:AFDS Roll Modes:HDG SEL –HDG SEL –The aircraft is turning to or is on the heading The aircraft is turning to or is on the heading selected in the MCP HEADING display.selected in the MCP HEADING display.

VOR LOC (armed) –VOR LOC (armed) –AFDS is armed to capture selected VOR or LOC AFDS is armed to capture selected VOR or LOC COURSE.COURSE.


Flight Mode Annunciators (FMA)Flight Mode Annunciators (FMA)AFDS Roll Modes:AFDS Roll Modes:LNAV –LNAV –The AFDS intercepts and tracks the active FMC The AFDS intercepts and tracks the active FMC route. Either of the following capture criteria must route. Either of the following capture criteria must be met in order for LNAV to capture:be met in order for LNAV to capture:• On any aircraft heading and within 3 NM of the On any aircraft heading and within 3 NM of the

active route segment.active route segment.• If outside of 3 NM of the active route segment, the If outside of 3 NM of the active route segment, the

aircraft must be on an intercept heading of 90aircraft must be on an intercept heading of 90° or ° or less and intercept the route segment before the less and intercept the route segment before the active waypoint.active waypoint.

VOR LOC (engaged) –VOR LOC (engaged) –AFDS tracks selected VOR course or tracks selected AFDS tracks selected VOR course or tracks selected localizer course along the inbound front course localizer course along the inbound front course bearing. bearing.


Flight Mode Annunciators (FMA)Flight Mode Annunciators (FMA)A/P STATUS modes:A/P STATUS modes:CWS ROLL –CWS ROLL –Indicates roll axis is CWS mode.Indicates roll axis is CWS mode.

CWS PITCH –CWS PITCH –Indicates pitch axis is CWS mode.Indicates pitch axis is CWS mode.


Flight Mode Annunciators (FMA)Flight Mode Annunciators (FMA)A/P STATUS modes:A/P STATUS modes:SINGLE CH –SINGLE CH –Annunciated when localizer is captured during single Annunciated when localizer is captured during single A/P operation while in the APP mode.A/P operation while in the APP mode.

A/P OFF –A/P OFF –Indicates that neither A/P is engaged and at least one Indicates that neither A/P is engaged and at least one F/D is positioned to ON.F/D is positioned to ON.


Flight Mode Annunciators (FMA)Flight Mode Annunciators (FMA)A/T Modes:A/T Modes:FMC SPD –FMC SPD –The A/T maintains speed commanded by the FMC.The A/T maintains speed commanded by the FMC.

MCP SPD –MCP SPD –The A/T maintains speed set in the MCP IAS/MACH The A/T maintains speed set in the MCP IAS/MACH display.display.

ARM –ARM –No A/T mode engaged. The A/T servo motors are No A/T mode engaged. The A/T servo motors are inhibited. The pilots may set thrust levers manually.inhibited. The pilots may set thrust levers manually.

THR HLD –THR HLD –The A/T servo motors are inhibited. The pilots may The A/T servo motors are inhibited. The pilots may set thrust levers manually.set thrust levers manually.


Flight Mode Annunciators (FMA)Flight Mode Annunciators (FMA)A/T Modes:A/T Modes:N1 –N1 –The A/T maintains thrust at the selected N1 limit The A/T maintains thrust at the selected N1 limit displayed on the thrust mode display.displayed on the thrust mode display.

RETARD –RETARD –Displayed while A/T repositions thrust levers to the Displayed while A/T repositions thrust levers to the aft stop. RETARD mode is then followed by ARM aft stop. RETARD mode is then followed by ARM mode.mode.

A/T LIMIT –A/T LIMIT –Indicates degraded A/T operation due to loss of FMC Indicates degraded A/T operation due to loss of FMC or N1 signals.or N1 signals.

GA –GA –The A/T maintains thrust at reduced go-around N1 The A/T maintains thrust at reduced go-around N1 setting if TO/GA switch pressed once, or full go-setting if TO/GA switch pressed once, or full go-around N1 limit if TO/GA switch pressed a second around N1 limit if TO/GA switch pressed a second time.time.


Flight Mode Annunciators (FMA)Flight Mode Annunciators (FMA)FMC N1 LIMIT:FMC N1 LIMIT:CRZ –CRZ –NN11 cursors indicate max cruise N cursors indicate max cruise N11..

CLB –CLB –NN11 cursors indicate selected climb N cursors indicate selected climb N11..

REDUCED –REDUCED –NN11 cursors indicate max takeoff N cursors indicate max takeoff N11 (CDU displays the (CDU displays the reduced Nreduced N11) or selected climb N) or selected climb N11..

TO –TO –NN11 cursors indicate max takeoff N cursors indicate max takeoff N11..


Flight Mode Annunciators (FMA)Flight Mode Annunciators (FMA)FMC N1 LIMIT:FMC N1 LIMIT:CON –CON –NN11 cursors indicate max continuous N cursors indicate max continuous N11..

GA –GA –NN11 cursors indicate max go-around N cursors indicate max go-around N11..


Autopilot/Autothrottle IndicatorsAutopilot/Autothrottle IndicatorsA/P P/RST (A/P Push To Reset) Disengage Light:A/P P/RST (A/P Push To Reset) Disengage Light:Illuminated flashing red –Illuminated flashing red –• A/P has disengaged (warning tone sounds).A/P has disengaged (warning tone sounds).• Lights reset by pushing either A/P P/RST disengage Lights reset by pushing either A/P P/RST disengage

light or pushing either A/P disengage switch.light or pushing either A/P disengage switch.

Illuminated steady red –Illuminated steady red –• Stabilizer out of trim below 800 feet RA during a Stabilizer out of trim below 800 feet RA during a

dual channel approach.dual channel approach.• ALT ACQ mode inhibited during A/P go-around if ALT ACQ mode inhibited during A/P go-around if

stabilizer not trimmed for single A/P operation.stabilizer not trimmed for single A/P operation.• Automatic ground system tests fail.Automatic ground system tests fail.• Disengage light test switch held in No. 2 position.Disengage light test switch held in No. 2 position.

Illuminated flashing amber –Illuminated flashing amber –• A/P has automatically reverted to CWS pitch or roll A/P has automatically reverted to CWS pitch or roll

while A/P switch(es) in CMD.while A/P switch(es) in CMD.• Lights reset by pushing either A/P P/RST disengage Lights reset by pushing either A/P P/RST disengage

light or engaging another mode.light or engaging another mode.

Illuminated steady amber –Illuminated steady amber –• Disengage light test switch held in No. 1 position.Disengage light test switch held in No. 1 position.


Autopilot/Autothrottle IndicatorsAutopilot/Autothrottle IndicatorsA/T P/RST (A/T Push To Reset) Disengage Light:A/T P/RST (A/T Push To Reset) Disengage Light:Illuminated flashing red –Illuminated flashing red –• A/T has disengaged.A/T has disengaged.

Illuminated steady red –Illuminated steady red –• Disengage light test switch held in No. 2 position.Disengage light test switch held in No. 2 position.

Illuminated flashing amber –Illuminated flashing amber –• Indicates A/T speed error if speed not held to Indicates A/T speed error if speed not held to

within + 10 or –5 knots of commanded speed when within + 10 or –5 knots of commanded speed when all of the following conditions exist:all of the following conditions exist: A/T engaged in MCP SPD or FMC SPD modeA/T engaged in MCP SPD or FMC SPD mode In flightIn flight Trailing edge flaps not upTrailing edge flaps not up

Illuminated steady amber –Illuminated steady amber –• Disengage light test switch held in No. 1 position.Disengage light test switch held in No. 1 position.


Autopilot/Autothrottle IndicatorsAutopilot/Autothrottle IndicatorsDisengage Light Test Switch:Disengage Light Test Switch:(spring-loaded to center)(spring-loaded to center)

TEST position No. 1 –TEST position No. 1 –• Illuminates A/P P/RST and A/T P/RST disengage Illuminates A/P P/RST and A/T P/RST disengage

lights steady amber.lights steady amber.• Illuminates FMC P/RST alert light steady amber.Illuminates FMC P/RST alert light steady amber.

TEST position No. 2 –TEST position No. 2 –• Illuminates A/P P/RST and A/T P/RST disengage Illuminates A/P P/RST and A/T P/RST disengage

lights steady red.lights steady red.• Illuminates FMC P/RST alert light steady amber. Illuminates FMC P/RST alert light steady amber.


Captain’s control wheelCaptain’s control wheel(autopilot disengage switch circled)(autopilot disengage switch circled)

Autopilot/Autothrottle ControlsAutopilot/Autothrottle ControlsAutopilot Disengage Switches:Autopilot Disengage Switches:One located on each control wheel.One located on each control wheel.

Push –Push –• Manually disengages both A/P’s.Manually disengages both A/P’s.• A/P disengage lights flash.A/P disengage lights flash.• A/P disengage warning tone sounds for a minimum A/P disengage warning tone sounds for a minimum

of two seconds.of two seconds.• If the autopilot(s) disconnected automatically, one If the autopilot(s) disconnected automatically, one

push of a disengage switch will extinguish the push of a disengage switch will extinguish the A/P disengage lights and silence the A/P A/P disengage lights and silence the A/P

disengage disengage warning tone.warning tone.

Note: If the A/P was manually disengaged, the Note: If the A/P was manually disengaged, the secondsecond push of a disengage switch will extinguish push of a disengage switch will extinguish the A/P disengage lights and silence the A/P the A/P disengage lights and silence the A/P disengage warning tone.disengage warning tone.

Listen to the A/PListen to the A/Pdisengage warning tonedisengage warning tone


Forward thrust leversForward thrust levers(autothrottle disengage switch circled)(autothrottle disengage switch circled)

Autopilot/Autothrottle ControlsAutopilot/Autothrottle ControlsAutothrottle Disengage Switches:Autothrottle Disengage Switches:One located on each thrust lever.One located on each thrust lever.

Push –Push –• Manually disengages A/T.Manually disengages A/T.• A/T disengage lights flash.A/T disengage lights flash.• A/T ARM switch trips to OFF.A/T ARM switch trips to OFF.• If the autothrottle disconnected automatically, one If the autothrottle disconnected automatically, one

push of a disengage switch will extinguish the A/T push of a disengage switch will extinguish the A/T disengage lights.disengage lights.

Note: If the A/T was manually disengaged, the Note: If the A/T was manually disengaged, the secondsecond push of a disengage switch will extinguish push of a disengage switch will extinguish the A/T disengage lights.the A/T disengage lights.


Forward thrust leversForward thrust levers(TO/GA switch circled)(TO/GA switch circled)

Autopilot/Autothrottle ControlsAutopilot/Autothrottle ControlsTO/GA (Takeoff/Go-Around) Switches:TO/GA (Takeoff/Go-Around) Switches:One located on each thrust lever.One located on each thrust lever.

Push –Push –Engages AFDS and A/T in TO or GA mode if the A/T Engages AFDS and A/T in TO or GA mode if the A/T was previously armed.was previously armed.

See picture of See picture of TO/GA switches asTO/GA switches asviewed from aboveviewed from above



Stabilizer Out Of TrimStabilizer Out Of Trim


Stabilizer Out Of TrimStabilizer Out Of Trim

STAB OUT OF TRIM Light:STAB OUT OF TRIM Light:Illuminated –Illuminated –A/P not trimming stabilizer properly.A/P not trimming stabilizer properly.

Note: Light armed only when an A/P is engaged.Note: Light armed only when an A/P is engaged.



Altitude Alert LightsAltitude Alert Lights


Altitude Alert LightsAltitude Alert Lights

ALTITUDE ALERT Lights:ALTITUDE ALERT Lights:Illuminated –Illuminated –Aircraft is approaching or departing MCP Aircraft is approaching or departing MCP selected altitude.selected altitude.

Listen to the Listen to the ALTITUDE ALERT toneALTITUDE ALERT tone

B737-300/400 Automatic flight

Engineering

Transcript of B737-300/400 Automatic flight