Emergency drills Flashcards
Power Failure - Main symptom:
– Low RPM horn
Power Failure - Symptoms (engine):
- Change in noise level
- Nose left yaw
- Oil pressure light
- Reducing engine RPM
Power Failure - Symptoms (drive):
- Unusual noise or vibration
- Yaw in either direction
- Decreasing rotor RPM with engine RPM increasing
Power Failure - Immediate Actions:
- Enter autorotation
- Speed below Vne power off
Power Failure - Cautions:
- Aft cyclic required as collective is lowered at high airspeed
- Do not apply aft cyclic during run-on
Power Failure above 500’ AGL - Immediate Actions:
- Enter auto
- Establish autorotation speed (nominal 70kias)
- Maintain RRPM between 97% and 108%
- Manoeuvre into wind if possible
- Attempt ‘Air Restart’ if practicable
- Unnecessary switches and fuel valve … OFF
- Carry out an autorotative landing
Range auto criteria:
- 90 kias
- RRPM 90%
Min RoD auto criteria:
- 55 kias
- RRPM 90%
Air Restart
- Mixture fully rich
- Throttle fully closed then cracked slightly
- Starter … START
Loss of Tail Rotor Thrust - Symptoms
- Nose right yaw which can’t be controlled with left pedal.
Loss of Tail Rotor Thrust in forward flight - Immediate Actions
- Enter autorotation
- Maintain 70 kias if possible
- Roll off throttle into over-travel spring
- Perform auto landing
Loss of Tail Rotor Thrust in hover - Immediate Actions
- Roll off throttle into over-travel spring
- Allow aircraft to settle
- Cushion with collective
Engine fire on start - Immediate Actions
- Continue cranking and attempt to start
- Run the engine at 60% - 70% briefly
- Mixture … OFF
- Fuel Valve … OFF
- Battery … OFF
- Rotor brake to stop rotors if time permits
- Vacate the aircraft
Engine fire in flight - Immediate Actions
- Enter auto
- Cabin heat … OFF
- Cabin vent … ON
- Fuel valve … OFF
- Carry out autorotative landing
- Battery … OFF
- Rotor brake … ON (If time permits)
- Vacate aircraft
Electrical fire in flight - Immediate Actions
- Battery … OFF
- Alternator … OFF
- Cabin vents open
- Land Immediately
- Mixture … OFF
- Fuel valve … OFF
- Rotor brake … ON (If time permits)
- Vacate aircraft
What systems are inoperative with the battery and alternator off?
- Governor
- Low rotor RPM warning
Hydraulic failure - Symptoms
- Heavy or stiff cyclic and/or collective
- Intermittent control vibration or feedback
Hydraulic failure - Immediate Actions
- Hyd switch … confirm ON
if hyds not restored: - Hyd switch … OFF
- Adjust airspeed and flight condition for comfortable flight
- Land as soon as practical
Governor failure - Immediate Actions
- Grip throttle and override governor
- Governor … OFF
- Revert to manual throttle control