Land immediately?
land on nearest clear area where a safe normal landing can be performed. Be prepared to enter autorotation during approach if required.
Land as soon as practical?
At pilot’s discretion based on nature of problem and available landing areas. Flight beyond nearest airport not recommended.
What causes a power failure?
Engine or drive system failure that is usually indicated by a low RPM horn.
What indicates engine failure?
Change in noise level, nose left yaw, oil pressure light, decreasing engine RPM.
What indicates drive system failure?
Unusual noise or vibration, nose right or left yaw, decreasing rotor RPM while engine RPM is increasing.
What should you do with a power failure?
Immediately lower collective to enter autorotation. Aft cyclic will be required.
What is EP for power failure above 500’ AGL?
- Lower collective to maintain rotor RPM.
- Establish steady glide of 65 KIAS.
- Adjust collective to keep RPM between 97 and 110% or apply full down collective if light weight prevents attaining above 97%.
- Select landing spot and if possible maneuver into the wind.
- Restart at pilot’s discretion.
- Turn off all unneccesary switches and fuel valve off if restart not possible.
- Flare at 40’ AGL to reduce rate of descent and forward speed.
- Forward cyclic at 8’ AGL and raise collective just before touchdown to cushion landing.
What is EP for power failure below 8’ AGL?
- Apply right pedal to prevent yawing.
- Allow aircraft to settle.
- Raise collective just before touchdown to cushion landing.
What is the maximum glide distance configuration?
- Airspeed approximately 75 KIAS.
- Rotor RPM approx 90%.
- Best glide ratio is about 4:1 or one nm per 1500’ AGL.
What is the air restart procedure?
- Mixture - full rich.
- Throttle - closed, then cracked slightly.
- Actuate starter with left hand.
What is EP for emergency water landing - power off?
- Same procedure as power failure over land until contacting water.
- Unlatch doors prior to water contact if time permits.
- Apply lateral cyclic when aircraft contacts water to stop rotors.
- Release seatbelt and quickly clear aircraft when rotors stop.
What is EP for emergency water landing - power on?
- Descend to hover over water.
- Unlatch doors.
- Passenger exits aircraft.
- Fly to safe distance from passenger.
- Switch battery and alternator off.
- Roll throttle off into overtravel spring.
- Keep level and apply full collective as aircraft contacts water.
- Apply lateral cyclic to stop rotors.
- Release seatbelt and quickly clear aircraft when rotors stop.
What is EP for loss of tail rotor in forward flight?
(Indicated by nose right yaw which cannot be corrected by left pedal.)
- Immediately enter autorotation.
- Maintain 70 KIAS if practical.
- Select landing site, roll throttle off into overtravel spring, and perform autorotation landing.
What is EP for loss of tail rotor thrust in hover?
- Immediately roll throttle off into overtravel spring.
2. Raise collective just before touchdown to cushion landing.
What is EP for engine fire during start on ground?
- Cranking - Continue and attempt to start which would suck flames and excess fuel into engine.
- If starts, run at 50-60% for a short time.
- Fuel mixture off
- Fuel valve off
- Battery switch off
- If time permits apply rotor brake.
- Exit helicopter. (as if you need to be told this!)
What is EP for engine fire in flight?
- Enter autorotation.
- Cabin heat off
- Cabin vent on
- IF ENGINE IS RUNNING - perform normal landing, then fuel mixture off and fuel valve off. IF ENGINE STOPS RUNNING - fuel valve off and complete autorotation.
- Battery switch off
- If time permits apply rotor brake.
- Exit helicopter (duh)
What is EP for electrical fire in flight?
- Battery and alternator switches off. (remember low RPM and governor are inoperative when off.)
- Open cabin vents.
- Land immediately.
- Fuel mixture off and fuel valve off.
- If time permits apply rotor brake.
- Exit helicopter
What is EP for a tachometer failure?
- Use remaining tach to monitor RPM.
- If not clear which is malfunctioning or if both tachs malfunction, allow governor to control RPM and land as soon as practical.
What is EP for governor failure?
- Grip throttle firmly to override the governor.
- Switch governor off.
- Complete flight using manual throttle control.
What is EP for oil light?
Indicates loss of engine power or oil pressure.
- Check engine tach for power loss.
- Check oil pressure gage and if pressure loss confirmed land immediately.
What is EP for MR Temp, MR Chip, or TR Chip light?
If light is accompanied by any indication of a problem such as noise, vibration, or temperature rise, land immediately. If no other indication of a problem, land as soon as practical.
What is EP for low fuel light?
Indicates approx one gallon of usable fuel. Will run out of fuel in 5-10 min.
What is EP for clutch light?
When switch is engaged the light stays on until belts are properly tensioned.
If on over 10 seconds, pull clutch circuit breaker and land as soon as practical. Reduce power and land immediately if there are other indications of a drive system failure. Be prepared to enter autorotation. Have drive system inspected.
What is EP for alternator light?
Indicates low voltage and possible alternator failure.
- Turn off non essential electrical equipment.
- Switch ALT off and on after one second to reset.
- If light stays on land as soon as practical.
