Radio Instrument (RI) Basics - T6B Driver · 2019. 3. 17. · Bearing Pointer Components •#1...
Transcript of Radio Instrument (RI) Basics - T6B Driver · 2019. 3. 17. · Bearing Pointer Components •#1...
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Radio Instrument (RI) Basics
Created: 23 Jun 2016Updated: 23 Jun 2016
T6BDriver.com
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Objectives
• Be familiar with navigation instruments inclusion to instrument scan
• Have an understanding of the Course Deviation Indicator (CDI) parts and operational concepts
• Have an operational understanding of the Bearing Pointers
• Be familiar with radial intercept indications for both double-the-angle intercepts (DAI) and 45 degree intercepts
• Comprehend and be able to apply the “6-Ts”
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Instrument Scan
• Control-Performance Concept of attitude instrument flying breaks instruments into 3 main areas:
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Instrument Scan
• Control-Performance Concept of attitude instrument flying breaks instruments into 3 main areas:• Control Instruments – provide an indication of attitude & power
(pitch/bank/torque)
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Instrument Scan
• Control-Performance Concept of attitude instrument flying breaks instruments into 3 main areas:• Control Instruments – provide an indication of attitude & power
(pitch/bank/torque)
• Performance Instruments – provide an indication of aircrafts actual performance (altitude/airspeed/heading)
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Instrument Scan
• Control-Performance Concept of attitude instrument flying breaks instruments into 3 main areas:• Control Instruments – provide an indication of attitude & power
(pitch/bank/torque)
• Performance Instruments – provide an indication of aircrafts actual performance (altitude/airspeed/heading)
• Navigation Instruments – provide an indication of aircrafts position/orientation to navaids (CDI/bearing pointer/DME/ILS)
DME
CDI
Bearing Pointer
Glide Slope Indicator
Localizer
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Instrument Scan
• Control-Performance Concept of attitude instrument flying breaks instruments into 3 main areas:• Control Instruments – provide an indication of attitude & power
(pitch/bank/torque)
• Performance Instruments – provide an indication of aircrafts actual performance (altitude/airspeed/heading)
• Navigation Instruments – provide an indication of aircrafts position/orientation to navaids (CDI/bearing pointer/DME/ILS)
• I21XX block taught basic instrument scan utilizing control & performance instruments
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Instrument Scan
• Control-Performance Concept of attitude instrument flying breaks instruments into 3 main areas:• Control Instruments – provide an indication of attitude & power
(pitch/bank/torque)
• Performance Instruments – provide an indication of aircrafts actual performance (altitude/airspeed/heading)
• Navigation Instruments – provides an indication of aircrafts position/orientation to navaids (CDI/bearing pointer/DME/ILS)
• I21XX block taught basic instrument scan utilizing control & performance instruments
• I22XX block incorporates navigation instruments into scan• Do not stare at the nav instruments!
• Scan & read them like you would performance instruments
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Course Deviation Indicator (CDI)
• Part of the Horizontal Situation Indicator (HSI)
CDI
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Course Deviation Indicator (CDI)
• Part of the Horizontal Situation Indicator (HSI)
• Top-Down view for pictorial presentation of course to aircraft
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Course Deviation Indicator (CDI)
• Part of the Horizontal Situation Indicator (HSI)
• Top-Down view for pictorial presentation of course to aircraft
• PFD Source Line Selection Key (LSK)• Indicates the driving navigational source for the CDI
• Can be VOR/LOC, FMS, or Off (show no CDI)
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CDI Navigational Source
• Select VOR/LOC navigation as source is indicated by white coloring
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CDI Navigational Source
• Select VOR/LOC navigation as source is indicated by white coloring• PFD Source indicates VOR or LOC (in white)
CDI Nav Source
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CDI Navigational Source
• Select VOR/LOC navigation as source is indicated by white coloring• PFD Source indicates VOR or LOC (in white)
• Annunciators show tuned frequency & DME (in white)
Tuned Freq
DME
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CDI Navigational Source
• Select VOR/LOC navigation as source is indicated by white coloring• PFD Source indicates VOR or LOC (in white)
• Annunciators show tuned frequency & DME (in white)
• CDI is displayed (in white)
CDI
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CDI Navigational Source
• Select VOR/LOC navigation as source is indicated by white coloring• PFD Source indicates VOR or LOC (in white)
• Annunciators show tuned frequency & DME (in white)
• CDI is displayed (in white)
• Course Selection LSK appears at bottom (in white)
Selected Course
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CDI Navigational Source
• Select FMS navigation as source is indicated by magenta coloring (more in the I32XX block)
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CDI Navigational Source
• Select FMS navigation as source is indicated by magenta coloring (more in the I32XX block)• PFD Source indicates FMS (in magenta)
CDI Nav Source
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CDI Navigational Source
• Select FMS navigation as source is indicated by magenta coloring (more in the I32XX block)• PFD Source indicates FMS (in magenta)
• Annunciators• Desired Track (DTK) – as set by FMS
• Waypoint name (magenta)
• Along Track Distance (ATD) – distance between waypoints
• FMS phase of flight (ENR, TERM, & APR) – indicates CDI scale
Desired Track
ATD
Waypoint Name
FMS phase of flt
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CDI Navigational Source
• Select FMS navigation as source as indicated by magenta coloring (more in the I32XX block)• PFD Source indicates FMS (in magenta)
• Annunciators• Desired Track (DTK) – as set by FMS
• Waypoint name (magenta)
• Along Track Distance (ATD) – distance between waypoints
• FMS phase of flight (ENR, TERM, & APR) – indicates CDI scale
• CDI is displayed (in magenta)
CDI
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CDI Components
• Head• Oriented to compass rose for pictorial view to aircraft
• Indicates selected course when PFD Source is VOR/LOC
• Indicates desired track when PFD source is FMSHead
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CDI Components
• Head• Oriented to compass rose for pictorial view to aircraft
• Indicates selected course when PFD Source is VOR/LOC
• Indicates desired track when PFD source is FMS
• Tail
Tail
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CDI Components
• Head• Oriented to compass rose for pictorial view to aircraft
• Indicates selected course when PFD Source is VOR/LOC
• Indicates desired track when PFD source is FMS
• Tail
• Deviation Bar & Scale• Indicates lateral deviation from selected course or track
• Pictorial in nature
• Dots indicate scale – (VOR) 1 Dot = 5 radials / 2 Dots = 10 radials
Deviation Bar
Deviation Scale
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CDI Components
• Head• Oriented to compass rose for pictorial view to aircraft
• Indicated selected course when PFD Source is VOR/LOC
• Indicates desired track when PFD source is FMS
• Tail
• Deviation Bar & Scale• Indicates lateral deviation from selected course or track
• Pictorial in nature
• Dots indicate scale – (VOR) 1 Dot = 5 radials / 2 Dots = 10 radials
• TO/FROM Arrow• Indicates if the selected course takes the aircraft to or from the navaid
TO/FROM Arrow
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CDI Operations
• Always T-I-M the desired navaid first
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CDI Operations
• Always T-I-M the desired navaid first
• Determine what course to enter• Can be given by approach procedure or navigational chart
Required Course to follow
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CDI Operations
• Always T-I-M the desired navaid first
• Determine what course to enter• Can be given by approach procedure or navigational chart
• Going TO or FROM a navaid makes a difference in your desired course you will enter for the CDI display
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CDI Operations
• Always T-I-M the desired navaid first
• Determine what course to enter• Can be given by approach procedure or navigational chart
• Going TO or FROM a navaid makes a difference in your desired course you will enter for the CDI display
• FROM a navaid – Course and radial are the same Outbound Course is same as Radial
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CDI Operations
• Always T-I-M the desired navaid first
• Determine what course to enter• Can be given by approach procedure or navigational chart
• Going TO or FROM a navaid makes a difference in your desired course you will enter for the CDI display
• FROM a navaid – Course and radial are the same
• TO a navaid – Course is reciprocal of radial
“Inbound turn it around”
Inbound Course is reciprocal of Radial
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CDI Operations
• Ways to compute reciprocal heading• Add/subtract 180
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CDI Operations
• Ways to compute reciprocal heading• Add/subtract 180
• +2/-2 method
Reciprocal of radial 160?
1 6 0+2 -2__
3 4 0
Reciprocal or course is 340
Reciprocal of radial 330?
3 3 0-2 +2__1 5 0
Reciprocal or course is 150
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CDI Operations
• Ways to compute reciprocal heading• Add/subtract 180
• +2/-2 method
• Enter radial into CRS and look at tail of CDI needle
Reciprocal of 360 radial?
Enter 360 in CRS
Look at Tail
Reciprocal is 180
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CDI Operations
• Ways to compute reciprocal heading• Add/subtract 180
• +2/-2 method
• Enter radial into CRS and look at tail of CDI needle
• Use relevance to needle or benchmark
Reciprocal of 020 radial?
Radial is 20 deg to right
Go 20 deg to left
Reciprocal is 200
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CDI Operations
• Enter the desired course• Press LSK under CRS display
• UFCP keys W4 for data entry (note symbol in pic)
• Enter desired course
Course LSK
Enter desired course in W4
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CDI Operations
• Enter the desired course• Press LSK under CRS display
• UFCP keys W4 for data entry (note symbol in pic)
• Enter desired course
• Direction of turn• Top-down view and pictorial
• Which way does the aircraft have to turn to get to the CDI bar?
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CDI Operations
• Tracking/Corrections (no ground track pointer)
• CDI bar centered when exactly on selected course
• CDI bar deviates to indicate off course• Wind is from direction of bar (from the
right in picture)• Pictorial direction of turn to get back
on course (right)
• Fly heading that will re-intercept course and center CDI bar
• Need to be aware of how much correction is being used (7 deg to the right in picture)
• As CDI bar returns to center, take out half of the drift correction (bracket technique)
• Do not return to original heading (360) as you will go off course again
• Now holding 3 deg of right drift correction to stay on course (distance between heading & CDI)
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CDI Operations
• Tracking/Corrections (with ground track pointer)
• CDI bar centered when exactly on selected course
• Note that Grnd Track Ptr shows wind corrected track is pushing aircraft to left of heading & course
• CDI bar deviates to indicate off course• Wind is from direction of bar (from the
right in picture)• Pictorial direction of turn to get back
on course (right)
• Fly heading that will re-intercept course and center CDI bar
• Turn to get both heading & GrndTrack Ptr to correct side of CDI
• As CDI bar returns to center, turn to place Grnd Track Ptr over CDI head (“light the candle”)
• Now holding 3 deg of right drift correction to stay on course (distance between Heading & Grnd Track Ptr)
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CDI Operations
• Tracking/Corrections (with ground track pointer)• Use caution when heavy winds are present causing large drift
corrections
• Ensure both heading and ground track pointer indicate a correction back to course
• Possible to have a heading showing a correction while ground track pointer does not
Heading shows correction back to course
Ground Track Pointer shows insufficient correction to
get back on course
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CDI Operations
• Station Passage• Main indication is TO/FROM flag flip
• Supporting indication when Bearing Pointer present - Pointer moves thru 3/9 O’Clock position
Aircraft proceeding TO station
Aircraft passed over and now proceeding FROM
station
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Bearing Pointers
• Part of the Horizontal Situation Indicator (HSI)
• Top-Down view for pictorial presentation of station/waypoint from aircraft
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Bearing Pointer Navigational Source
• Bearing Pointer Line Selection Key (LSK)• Indicates the driving navigational source for the pointers
• Can be VOR, FMS, or OFF (show no needle)
Source LSK
Source LSK
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Bearing Pointer Components
• #1 Bearing Pointer• Single needle with circle at head
• Always colored green
• Can select VOR, FMS, or OFF (no needle)
• Normal selection is VOR for standardization
#1 PointerSource LSK
#1 Pointer Identifier
& Info
#1 PointerHead
#1 PointerTail
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Bearing Pointer Components
• #1 Bearing Pointer• Single needle with circle at head
• Always colored green
• Can select VOR, FMS, or OFF (no needle)
• Normal selection is VOR for standardization
• #2 Bearing Pointer• Double needle with diamond at head
• Always colored cyan (fancy word for light blue)
• Can select VOR, FMS, or OFF (no needle)
• Normal selection is FMS for standardization
#2 PointerSource LSK
#2 Pointer Identifier
& Info
#2 PointerHead
#2 PointerTail
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Bearing Pointer Operations
• Always T-I-M the desired navaid first
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Bearing Pointer Operations
• Always T-I-M the desired navaid first
• Aircraft position is always on the tail of the needle at whatever distance the DME indicates
Aircraft is on the Battle Ground VOR
Radial 016
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Bearing Pointer Operations
• Always points directly at the station or waypoint• Aircraft heading does not matter
• Pictorial in nature on HSI
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Bearing Pointer Operations
• Needle movement• Consider movement relative to aircraft heading
• Head of needle always falls
• Tail of needle always rises
“Heads will fall, Tails will rise”
Head of needle will “fall” away from aircraft heading
Tail of needle will “rise” toward aircraft
heading
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Bearing Pointer Operations
• Needle movement• Consider movement relative to aircraft heading
• Head of needle always falls
• Tail of needle always rises
“Heads will fall, Tails will rise”
• Desired course• No CDI to indicate your desired course to track
• Use heading bug to set desired course (technique)
• Gives a pictorial representation of where needle should be
Set hdg bug to desired track
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Bearing Pointer Operations
• Corrections• Turn direction indicated by “Tail – Radial – Turn”
• Do not use Course….must use Radial
• Example Outbound• Note that Course and Radial are the same going outbound
Go from Tail to Desired Radial = Turn direction
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Bearing Pointer Operations
• Corrections• Turn direction indicated by “Tail – Radial – Turn”
• Do not use Course….must use Radial
• Example Outbound• Note that Course and Radial are the same going outbound
• Example Inbound• Note that the desired Course is 180…which is the 360 Radial
• Have to look at bottom of HSI for correction direction
Go from Tail to Desired Radial = Turn direction
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Bearing Pointer Operations
• Corrections• Turn direction indicated by “Tail – Radial – Turn”
• Do not use Course….must use Radial
• Example Outbound• Note that Course and Radial are the same going outbound
• Example Inbound• Note that the desired Course is 180…which is the 360 Radial
• Have to look at bottom of HSI for correction direction
• Station Passage• Indicated when needle passes the 3 or 9 o’clock
• Needle remains below the 3/9 o’clock
Need passes 3-9 line and remains in bottom half of HSI
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Bearing Pointer Operations
• Tracking/Corrections• Use heading bug to mark desired course (technique)
• Use tail-radial-turn to identify direction of correction
• Use understanding of needle movement to verify proper correction
• Identify winds by “Tail – Radial – Wind”
• Want to maintain a desired course outbound of 190
• Mark course with hdg bug
• Wind has blown aircraft off course• Wind coming from right (Tail-Radial-Wind)• Turn right to correct (Tail-Radial-Turn)
• Turn to a correction heading to the right of the desired course
• Verify tail should “rise” back to desired course
• Turn back to a heading that takes out half of the correction (bracket technique)
• Needle remains on desired course
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Intercept Angles
• Cover understanding about intercept angles & what look like…NOT procedures
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Intercept Angles
• Cover understanding about intercept angles & what look like…NOT procedures
• Used to intercept desired course inbound, outbound, or over a station
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Intercept Angles
• Cover understanding about intercept angles & what look like…NOT procedures
• Used to intercept desired course inbound, outbound, or over a station
• Two intercepts primarily used• Double the Angle Intercept (DAI) – Correct using angle double the displacement from course (45 deg max)
• 45 Degree Intercept – Use a 45 degree angle to the desired course
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Intercept Angles
• Cover understanding about intercept angles & what look like…NOT procedures
• Used to intercept desired course inbound, outbound, or over a station
• Two intercepts primarily used• Double the Angle Intercept (DAI) – Correct using angle double the displacement from course ( 45 deg max)
• 45 Degree Intercept – Use a 45 degree angle to the desired course
• Corrections are always made FROM the desired course• Could be CDI head
• Could be course marked with heading bug
• Do not correct from the bearing pointer!
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Intercept Angles
• Double the Angle Intercept (DAI)• Used when close to the station or when you don’t want a big correction that will overshoot course
• Set an intercept angle that is double the angle off the desired course (not to exceed 45 degrees of correction)
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Intercept Angles
• Double the Angle Intercept (DAI)• Used when close to the station or when you don’t want a big correction that will overshoot course
• Set an intercept angle that is double the angle off the desired course (not to exceed 45 degrees of correction)
10 Deg off course
Need a 20 deg correction back to course
20 Deg from course
A DAI back to course is now set
Determining and setting a DAI inbound
• Note Bearing Pointer is only used to determine radials off• Note correction is made from desired course, not the
bearing pointer• Note head of bearing pointer is between correction
heading and desired course and will “fall” back to desired course
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Intercept Angles
• Double the Angle Intercept (DAI)• Used when close to the station or when you don’t want a big correction that will overshoot course
• Set an intercept angle that is double the angle off the desired course (not to exceed 45 degrees of correction)
10 Deg off course
Need a 20 deg correction back to course
20 Deg from course
A DAI back to course is now set
Determining and setting a DAI outbound
• Note Bearing Pointer is only used to determine radials off• Note correction is made from desired course, not the
bearing pointer• Note tail of bearing pointer is not between correction
heading and desired course but will “rise” back to desired course
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Intercept Angles
• 45 Degree Intercept• Used when away from the station or when you can make a big correction without risk of overshooting
• Set an intercept angle that is at 45 degrees (use benchmarks)
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Intercept Angles
• 45 Degree Intercept• Used when away from the station or when you can make a big correction without risk of overshooting
• Set an intercept angle that is at 45 degrees (use benchmarks)
Off course
Need a 45 deg correction back to course
45 Deg from course
A 45 deg correction angle back to course is now set
Setting a 45 degree intercept inbound
• Note correction is made by placing the desired course at the 45 benchmark
• Note head of bearing pointer is between correction heading and desired course and will “fall” back to desired course
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Intercept Angles
• 45 Degree Intercept• Used when away from the station or when you can make a big correction without risk of overshooting
• Set an intercept angle that is at 45 degrees (use benchmarks)
Off course
Need a 45 deg correction back to course
45 Deg from course
A 45 deg correction angle back to course is now set
Setting a 45 degree intercept outbound
• Note correction is made by placing the desired course at the 45 benchmark
• Note head of bearing pointer is not between correction heading and desired course and will “rise” back to desired course
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The Six Ts
• Used as a memory jogger to help accomplish required tasks at various points
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The Six Ts
• Used as a memory jogger to help accomplish required tasks at various points
• Used at main instrument approach points (IAF & FAF) as well as intercepts & holding
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The Six Ts
• Used as a memory jogger to help accomplish required tasks at various points
• Used at main instrument approach points (IAF & FAF) as well as intercepts & holding
• 6 Ts:• Time
• Turn
• Time
• Transition
• Twist (twister-cept)
• Talk
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The Six Ts
• Used as a memory jogger to help accomplish required tasks at various points
• Used at main instrument approach points (IAF & FAF) as well as intercepts & holding
• 6 Ts:• Time
• Turn
• Time
• Transition
• Twist (twister-cept)
• Talk
• Know them cold and be able to run thru them!!
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The Six Ts
• Time• Note clock time (technique – call out the minutes….”18 after”)
• Start clock as required
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The Six Ts
• Time• Note clock time (technique – call out the minutes….”18 after”)
• Start clock as required
• Turn• Turn to new course as required
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The Six Ts
• Time• Note clock time (technique – call out the minutes….”18 after”)
• Start clock as required
• Turn• Turn to new course as required
• Time• Start clock as required
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The Six Ts
• Transition• Begin altering airspeed, altitude, or configuration if required
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The Six Ts
• Transition• Begin altering airspeed, altitude, or configuration if required
• Twist (twister-cept)• Set CDI to new course
• Set intercept to new course as required
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The Six Ts
• Transition• Begin altering airspeed, altitude, or configuration if required
• Twist (twister-cept)• Set CDI to new course
• Set intercept to new course as required
• Talk• Report to ATC as required
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Summary
• Be familiar with navigation instruments inclusion to instrument scan
• Have an understanding of the Course Deviation Indicator (CDI) parts and operational concepts
• Have an operational understanding of the Bearing Pointers
• Be familiar with radial intercept indications for both double-the-angle intercepts (DAI) and 45 degree intercepts
• Comprehend and be able to apply the “6-Ts”