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Exercises 13

Launch Failures

CFS Gliding Examiners © 2009

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To Land safely following a launch failure

AIM

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AIRMANSHIP1. Plan for a launch failure prior to

every launch2. Knowledge of immediate actions3. Effect of wind speed and direction4. Position of other aircraft in the circuit

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Symptoms of a launch failure

Cable Break:- Loud bang- Possible sudden pitch up- Marked deceleration

Winch Failure- Gradual or marked deceleration- Speed reduces towards 50 kt

Symptoms of a Launch Failure

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Immediate Actions

Cable Break:• Select approach attitude (unless below 100 ft)• Pull cable release twice• Wait for approach speed• Decide if there is room to land ahead

Winch failure:• Select a level attitude to accelerate• If speed does not increase treat as above

Immediate Actions

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Low Launch Failure

Low Launch FailureLaunch Failure

Immediate actions

Can I land ahead - YES

Re-check approach speed then carefully select airbrakes

Make small heading change if necessary to avoid obstructionsCarry out normallanding ahead

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Medium Launch Failure

Medium Launch FailureLaunch Failure

Immediate actions

Can I land ahead - NO

Re-check approach speed then turn downwindIf below 250 ft continue turn onto best heading

Wings level by 100 ft.

If above 250 ft roll out downwind

Fly downwind until 250 ft or the nominated downwind boundaryTurn into windWings level by 100 ft If height available – intercept

normal circuit pattern

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Medium Launch Failure

Medium Launch Failure

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Launch Failure Below 100 ft

It will not be possible to select the approach attitude.

The appropriate attitude to select will depend on the height at which the failure occurs.

In general the lower the height the failure occurs at the higher the attitude required.

At a very low level it may be necessary to hold the initial climb attitude!

Launch Failure Below 100 ft

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1. Select an appropriate attitude

2. Pull cable release twice

3. Land ahead

4. Do not use airbrake until after round out, and then

only with caution

Launch Failure Below 100 ft

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THE END?Any Questions

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