Engines

Question 1

Three Engine Failure (Hover and Takeoff)

Answer 1

1. Collective - reduce (if altitude permits, to maintain Nr)
2. Airspeed - as required
3. Pickle - as desired
4. Speed control levers - as required
5. Collective - increase to cushion the landing

Question 2

Three Engine Failure (Cruise)

Answer 2

1. Collective - reduce (to maintain Nr at or above 100-103%)
2. Airspeed - as required (max glide distance airspeed provides improved flare effectiveness)
3. Pickle - as desired
4. Speed control levers - as required
5. Execute authoritative landing

Question 3

Single or Dual Engine Failure

Answer 3

1. Collective - maintain Nr at or above 90%
   
   • WARNING - premature collective reduction may result in excessive descent rate. Maintain collective position while remaining engines pick up the load. Do not allow Nr to droop below 90.
2. Airspeed - as required for single/dual engine capability
3. Pickle - as desired
4. Speed control levers - as required (shut down affected engine conditionings permitting)
5. Land as soon as practical

Question 4

Single or Dual Engine Failure During AMCM Operations

Answer 4

1. Maintain Nr at or above 90%
2. If forward flight cannot be maintained
   A. Cyclic - minimize groundspeed/tension
   B. Collective - increase as necessary to cushion landing or maintain low hover
   C. If water landing has occurred, continue with engine restart during flight, single or dual engine water takeoff, or water taxi procedures
   D. If hover can be maintained
   1. Speed control levers - as required (shut off affected engines, conditions permitting)
   2. Tow - pickle (as required)
   3. Transition to forward flight
   4. Land as soon as practical
3. If normal flight can be maintained
   A. Speed control levers - as required (shut off affected engines, conditions permitting)
   B. Tow - pickle (as required)
   C. Land as soon as practical

Question 5

Single or Dual Engine Flyaway

Answer 5

1. Collective - maintain Nr at or above 90%/disengag RADALT HOLD
2. Pickle - as required
3. Airspeed - increase. Establish approximately 10 degrees nose down to accelerate as helo settles.
4. Speed control lever - as desired
5. Airspeed - when in translational lift and ground effect, accelerate to best single/dual engine airspeed. Climb using cyclic and airspeed.
6. Altitude - when altitude permits (100-150ft), adjust collective to obtain 95-100% Nr

Question 6

Engine Chip Locator Light

Answer 6

Indications - chip light and unusual vibrations, high oil px, low oil px.

1. Airspeed - as required for single/dual engine capability
2. Instruments and caution lights - check
   * if secondary indications are present or engine failure occurs
3. Perform single or dual engine failure procedures
   * if chip light not accompanied by other indications
4. Pull and reset engine chip circuit breaker

Question 7

Engine Shutdown in Flight

Answer 7

1. Speed control lever - shut off. If no2 engine is being secured, reduce airspeed to less than 85kias, conditions permitting
   
   • WARNING - if an operating engine and a failed or secured engine have the same tank selected, the operating engine may flame out if the fuel select levers was not placed to shut off
   • WARNING - failure to reduce airspeed to below 85 will cause backflow
2. Fuel select lever - shutoff
   
   • CAUTION - if engine post shutdown fire, motor engine to extinguish fire
3. Adjust power on remaining engines
4. EAPS doors - closed

Question 8

Compressor Stall

Answer 8

Indications - T5 will increase, unusual engine sounds, slight yaw kick

1. Collective - maintain Nr at or above 90%
2. Airspeed - as required for single dual engine capability
3. Pickle - as desired
4. Speed control levers - as required. If no2, secure SCL as soon as possible. If no1 or no3, affected SCL below min gov.
5. If T5 continues to rise, position SCL to shutoff and continue with engine shutdown procedures in flight
   
   • WARNING - with compressor stall in the no2, any delay in shutting down can cause fire hazard.
6. If T5, decreases and stall clears, slowly advance SCL to reestablish marched torques.
7. If stall recurs, secure affected engine as instructed under engine shutdown procedures in flight

Question 9

Engine Power Loss

Answer 9

1. Collective - maintain Nr at or above 90%
2. Airspeed - as required for single dual engine capability
3. Pickle - as desired
4. Speed control levers - as required
5. Continue to use affected engine if engine is producing come torque and all engine parameters are within limits

Question 10

Engine Overspeed

Answer 10

1. Collective - maintain Nr
2. Airspeed - as required
3. Pickle - as desired
4. Speed control levers - as required. Attempt to regain control of affected engine power by retarding affected engines SCL to min gov

Question 11

Power Train Failure

Answer 11

Indications - Nf and torque go to zero, grinding or howling noise, T5 and Ng increase until overspeed system cycles and SCL is brought to min gov

1. Collective - maintain Nr at or above 90%
2. Airspeed - as required for single or dual engine capability
3. Pickle - as desired
4. Speed control levers - as required (secure affected engines)
   
   • WARNING - closely monitor hyd systems and flight controls, possible to damage those areas following drive shaft failure
   • CAUTION - do not attempt to restart engine