H engine failure

Question 1

POH Em: Indications of an engine failure (4)

Answer 1

a change in noise level,
nose left yaw,
an oil pressure light, or
decreasing engine RPM.

Question 2

A drive system failure may be indicated by (3)

Answer 2

an unusual noise or vibration, nose right or left yaw, or
decreasing rotor RPM while engine RPM is increasing

Question 3

If Collective is lowered at a high speed, which way should the cyclic be, forward or aft?

Answer 3

Aft

Question 4

POH Em: POWER FAILURE ABOVE 500 FEET AGL (8)

Answer 4

1. Lower collective immediately to maintain rotor RPM.
2. Establish a steady glide at approximately 65 KIAS. (For maximum glide distance, see page 3-3.)
3. Adjust collective to keep RPM between 97 and 110% or apply full down collective if light weight prevents attaining above 97%.
4. Select landing spot and, if altitude permits, maneuver so landing will be into wind.
5. A restart may be attempted at pilot’s discretion if sufficient time is available (See “Air Restart Procedure”, page 3-3).
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 descent and forward speed.
8. At about 8 feet AGL, apply forward cyclic to level ship and raise collective just before touchdown to cushion landing. Touch down in level attitude with nose straight ahead.

Question 5

POH Em: Power Failure Between 8 Feet and 500 Feet AGL (4)

Answer 5

1. Lower collective immediately to maintain rotor RPM.
2. Adjust collective to keep RPM between 97 and 110% or apply full down collective if light weight prevents attaining above 97%.
3. Maintain airspeed until ground is approached, then begin cyclic flare to reduce rate of descent and forward speed.
4. At about 8 feet AGL, apply forward cyclic to level ship and raise collective just before touchdown to cushion landing. Touch down in level attitude and nose straight ahead.

Question 6

POH Em: POWER FAILURE BELOW 8 FEET AGL (3)

Answer 6

1. Apply right pedal as required to prevent yawing.
2. Allow aircraft to settle.
3. Raise collective just before touchdown to cushion landing.

Question 7

POH Em: MAXIMUM GLIDE DISTANCE CONFIGURATION (3)

Answer 7

1. Airspeed approximately 75 KIAS.
   2, Rotor RPM approximately 90%.
2. Best glide ratio is about 4:1 or one nautical mile per 1500 feet AGL.

Question 8

POH Em: Increase rotor RPM to __% minimum when autorotating below 500 feet AGL

Answer 8

97%

Question 9

POH Em: Air Restart Procedure (4)

Answer 9

1. Mixture - full rich.
2. Primer (if installed) - down and locked.
3. Throttle - closed, then cracked slightly.
4. Actuate starter with left hand.
   CAUTION
   Do not attempt restart if engine malfunction is suspected or before safe autorotation is established.

Question 10

EMERGENCY WATER LANDING - POWER OFF (3)

Answer 10

1. Follow same procedures as for power failure over land until contacting water. If time permits, unlatch doors prior to water contact.
2. Apply lateral cyclic when aircraft contacts water to stop rotors.
3. Release seat belt and quickly clear aircraft when rotors stop.

Question 11

EMERGENCY WATER LANDING - POWER ON (9)

Answer 11

1. Descend to hover above water.
2. Unlatch doors.
3. Passenger exit aircraft.
4. Fly to safe distance from passenger to avoid possible injury by rotors.
5. Switch battery and alternator OFF.
6. Roll throttle off into overtravel spring.
7. Keep aircraft level and apply full collective as aircraft contacts water.
8. Apply lateral cyclic to stop rotors.
9. Release seat belt and quickly clear aircraft when rotors stop.

Question 12

LOSS OF TAIL ROTOR THRUST IN FORWARD FLIGHT (3)

Answer 12

Failure is usually indicated by nose right yaw which cannot be corrected by applying left pedal.
1. Immediately enter autorotation.
2. Maintain at least 70 KIAS if practical.
3. Select landing site, roll throttle off into overtravel spring, and perform autorotation landing.
NOTE
When a suitable landing site is not available, the vertical stabilizers may permit limited controlled flight at low power settings and airspeeds above 70 KIAS; however, prior to reducing airspeed, enter full autorotation.

Question 13

LOSS OF TAIL ROTOR THRUST IN FORWARD FLIGHT (3)

Answer 13

Failure is usually indicated by nose right yaw which cannot be corrected by applying left pedal.

1. Immediately enter autorotation.
2. Maintain at least 70 KIAS if practical.
3. Select landing site, roll throttle off into overtravel spring, and perform autorotation landing.

NOTE
When a suitable landing site is not available, the vertical stabilizers may permit limited controlled flight at low power settings and airspeeds above 70 KIAS; however, prior to reducing airspeed, enter full autorotation.

Question 14

LOSS OF TAIL ROTOR THRUST IN FORWARD FLIGHT (7)

Answer 14

1. Cranking - Continue and attempt to start which would suck flames and excess fuel into engine.
2. If engine starts, run at 50-60% RPM for a short time.
3. Fuel mixture - OFF.
4. Fuel valve - OFF.
5. Battery switch - OFF.
6. If time permits, apply rotor brake to stop rotors.
7. Exit helicopter.

Question 15

ENGINE FIRE IN FLIGHT (7)

Answer 15

1. Enter autorotation.
2. Cabin heat - OFF (if installed and time permits).
3. Cabin vent - ON (if time permits).
4. 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 landing.
5. Battery switch - OFF.
6. If time permits, apply rotor brake to stop rotors.
7. Exit helicopter.

Question 16

ELECTRICAL FIRE IN FLIGHT (5)

Answer 16

1. Battery and alternator switches - OFF.
2. Open cabin vents.
3. Land immediately.
4. Fuel mixture OFF and
   fuel valve OFF.
5. If time permits, apply rotor brake to stop rotors.
6. Exit helicopter.

CAUTION
Low RPM warning system and governor are inoperative with battery and alternator switches both off.

Question 17

GOVERNOR FAILURE

Answer 17

If engine RPM governor malfunctions, grip throttle firmly to override the governor, then switch governor off. Complete flight using manual throttle control.