Microlight Flight LessonsMicrolight Flight Lessons

Exercise 10A Slow FlightExercise 10A Slow Flight

AimAimTo become familiar with the feel of the To become familiar with the feel of the

aircraft in slow flight just above the stall aircraft in slow flight just above the stall speed, and to recognise the symptoms of speed, and to recognise the symptoms of the incipient stall. Also to restore the air-the incipient stall. Also to restore the air-craft to safe flight before the stall occurs.craft to safe flight before the stall occurs.

Stall and stall speedStall and stall speed

In steady level flight , as airspeed is In steady level flight , as airspeed is reduced angle of attack will also reduced angle of attack will also increaseincrease

This will happen whenever the This will happen whenever the airspeed is reduced, regardless of airspeed is reduced, regardless of whether the aircraft is level or glidingwhether the aircraft is level or gliding

If flown too slowly the angle of If flown too slowly the angle of attack will exceed the critical angle attack will exceed the critical angle

and the air flow will stalland the air flow will stall

Stalled flow

Controlled flight is not possible below this critical speed/angle

Indications of slow flight VS 5Indications of slow flight VS 5

In a turnIn a turn

The Incipient StallThe Incipient StallLast warning of the approaching stall

AirmanshipAirmanshipPre stall checkPre stall check H.A.S.E.LLH.A.S.E.LL

H – Height min 1000ft agl for exerciseH – Height min 1000ft agl for exercise A – Airframe secureA – Airframe secure S – Security straps, Helmets, Loose articlesS – Security straps, Helmets, Loose articles E – Engine- TempE – Engine- Temp L – Location – Airspace, Drift, Habitation.L – Location – Airspace, Drift, Habitation. Lookout – Lookout – Clearing turn. Look above Lookout – Lookout – Clearing turn. Look above

and belowand below

This check should be repeated once every This check should be repeated once every 3 to 4 minutes or more often in poor visibility3 to 4 minutes or more often in poor visibility