Emergance Procedures Flashcards
Power failed above 500 feet AGL
1 lower collective immediately to maintain rotor rpm
2 establish a steady glide at approximately 65 kn
3 adjust collective to keep rpm between 97 and 110 or apply fall down collective if lightweight prevents attaining above 97%
4 select a landing spot and, if altitude permits, maneuver so landing will be into the wind
5 A restart may be attempted at pilots discretion if submit sufficient time is available
6 if unable to restart, turn unnecessary switches and fuel valve off
7 at about 40 feet AGL begin cyclic flare to reduce rate of this sent and forward speed
8 at about 8 feet AGL apply forward cyclic to level ship and raise collective just before touchdown to cushion landing. Touchdown in level attitude with nose is straightahead
Power Failure between 8 feet and 500 feet AGL
- Lower clicked of immediately to maintain rotor rpm
- I just collective to keep rpm between 97 and 110% or apply for down collective it’s lightweight prevents attaining above 97%
- Maintain airspeed until ground approaches then begin cyclic flair to reduce rate of dissent in forward speed
- Had about 8 feet AGL the play forward cyclic to level shit and raise collective just before touchdown to cushion landing, touchdown in level attitude and nose straight ahead
Power failure below 8 feet AGL
- Apply right pedal as required to prevent yawing
- Allow aircraft to settle
- Raise collective just before touchdown to cushion landing
Maximum Glide Distance Configuration
- Airspeed approximately 75 kn
- Rotor rpm approximately 90%
- Best glide ratio is about 4:1 or one nautical mile per 1500 feet AGL
Air Restart Procedure
- Mixture – full rich
- Primer if installed- down and locked
- Throttle- closed, then cracked slightly
- Actuate starter with left hand
Do not attempt restart if engine malfunction is suspected or before safe auto rotation is established
Emergency water landing – power off
- Follow same procedure as for power failure over land until contacting water. If time permits unlatch doors prior to water contact
- Apply lateral cyclic when aircraft contacts water to stop rotors
- Release seatbelt and quickly clear aircraft when rotor stops
Emergency water landing – power on
- Descend to hover above water
- Unlatch doors
- Passenger exit aircraft
- Fly to safe distance from passenger to avoid possible injury by rotor
Switch battery and alternator off - Roll throttle into over travel spring
- Keep aircraft level and apply full collective as aircraft contacts water
- Apply lateral cyclic to stop rotors
- Release seatbelt and quickly clear aircraft and rotor stop
Loss of tail rotor thrust in forward flight
Failure is usually indicated by nose right yaw which cannot be corrected by applying left pedal
- Immediately enter auto rotation
- Maintain at least 70 kn if practical
- Select landing site, roll throttle call into overtravel spring, and perform autorotation landing
When suitable landing site is not available the vertical stabilizers meet permit limited control flight at lower power setting and airspeed above 70 kn however prior to reducing airspeed enter full auto rotation
Loss of tail rotor thrust in hover
Failure is usually indicated by nose right yaw which cannot be stopped by applying left pedal
- Immediately little half throttle into over travel spring pan allow aircraft to settle
- Raise collective just before touchdown to cushion landing
Engine fire during start on ground
Cranking- continue and attempt to start which would suck flames and excess fuel into engine
If engine starts run 50%-60% rpm for short time
Fuel mixture off
Fuel valve off
Batter switch off
If time permits apply rotor break to stop rotors
Exit helicopter
Engine fire in flight
Enter autorotation
Cabin heat off (if installed and time permits)
Cabin vent on (if time permits)
If engine is running perform normal landing then fuel and mixture off and fuel valve off
If engine stops running fuel valve off and complete autorotation
Battery switch off
If time permits apply rotor break to stop rotors
Exit helicopter
Electrical fire in flight
Battery and alternator switches off Open cabin vents Land immediately Fuel mixture off and fuel valve off If time permits apply rotor brake to stop rotors Exit helicopter
Tachometer failed
If rotor or engine tach malfunctions in flight use remaining tach to monitor rpm if it is not clean which tach is malfunctioning or if both tachs malfunction allow governor to control rpm and land as soon as practicable
Each tach the gov and the low rpm warning horn are on separate circuits either the after or the alternator can independently supply power to the tachs a special circuit allows the batter to supply power to the tachs even if the master battery switch is off
Governor failure
If the engine rpm governor malfunctions grip throttle firmly to override the governor then switch governor off complete flight using manual throttle control
Oil
Indicates loss of engine power or oil pressure check engine tach for power loss Check oil pressure gage and if pressure loss is confirmed land immediately continued operation without oil pressure will cause serious engine damage and engine failure may occurs
