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TH-57 Memory EP Steps

  1. Emergency Shutdown
    • 1) Twist Grip - Close
    • 2) Fuel Valve - OFF
    • 3) Bat Switch - OFF
    • 4) STBY ATT IND Switch - OFF
    • 5) Rotor Brake - Engage immediately
    • 6) Helicopter - Egress and use the fire bottle as required to extinguish the fire or get clear of the aircraft
  2. Abort Start
    • 1) Twist Grip - Close
    • 2) Starter - Secure after TOT stabilizes at 400ºC or below
  3. Post Shutdown Fire (Internal)
    • 1) Starter - Engage
    • 2) Fuel Valve - OFF
    • 3) Igniter Circuit Breaker - Pull
    • 4) Starter - Secure after fire is extinguished
  4. Engine Failure in Flight
    • 1) Autorotate
    • 2) Shoulder Harness - Lock
    • If time and altitude permit:
    • 3) Mayday - Transmit
    • 4) Transponder - Emergency
  5. Engine Failure at High Airspeed and Low Altitude
    • 1) Cyclic - Immediately apply aft
    • 2) Autorotate
  6. Overtorque/Overspeed/Overtemp
    Land as soon as possible
  7. Compressor Stall
    • 1) Collective - Reduce
    • 2) ENG Anti-ice Switch - ON
    • 3) Cabin Heat Valve - ON
    • If compressor stall persists and the aircraft is uncontrollable:
    • 4) Autorotate
    • 5) Twist Grip - Flight idle
    • If compressor stall clears or the aircraft is controllable:
    • 6) Land as soon as possible
  8. Underspeeding Nf/Nr
    • 1) Collective - Lower as required to maintain a minimum of 90% Nr
    • 2) Twist Grip - Full opne
    • 3) GOV RPM - Full increase
    • If underspeed persists:
    • 4) Check power available with Nr in limits
    • If power is not sufficient:
    • 5) Autorotate
    • If sufficient power is available:
    • 6) Land as soon as possible
  9. Power Required Exceeds Power Available
    • 1) Collective - Lower as required to maintain a minimum of 90% Nr
    • 2) Twist Grip - Full open
    • 3) Angle of Bank - Level wings
    • 4) Airspeed - Adjust to 50 kias
    • 5) Jettison - As required
    • If impact is imminent:
    • 6) Level the aircraft to conform to terrain
    • 7) Cushion the landing
  10. Dynamic Rollover
    • 1) Collective - Reduce to stop the roll
    • 2) Cyclic - Neutral
  11. Engine Overspeed (Nf) Rotor RPM (Nr)
    • 1) Twist Grip - Reduce to maintain Nf/Nr in operating range
    • 2) Collective/Twist Grip - Coordinate
    • 3) Land as soon as possible
  12. Fuel Control Failure
    • 1) Collective - Adjust as required to maintain Nr in operating range
    • 2) Twist Grip - Adjust to maintain Nf/Ng in operating range
    • 3) Land as soon as possible
  13. Engine Restart in Flight
    • 1) Autorotate
    • 2) Starter - Engage
    • 3) Twist Grip - Check full open
    • If light off does not occur:
    • 4) Twist Grip - Close
    • If lightoff occurs:
    • 5) Twist Grip - Full open
    • 6) Land as soon as possible
  14. Main Drive Shaft Failure
    • 1) Autorotate
    • 2) Twist Grip - Adjust, if necessary, to maintain Nf in operating range
    • When on deck:
    • 3) Emergency Shutdown - Complete
  15. Sprag Clutch Seizure
    • 1) Autorotate
    • 2) Twist Grip - Flight idle
    • If time and altitude permit:
    • 3) Twist Grip - Smoothly rotate to full open
    • If Nf/Nr are married:
    • 4) Collective - Increase
    • If sprag clutch continues to slip:
    • 5) Autorotate
    • 6) Twist Grip - Closed
    • If the sprag clutch engages:
    • 7) Land as soon as possible
  16. Sprag Clutch Seizure
    • 1) Ensure twist grip is full open
    • 2) Land as soon as possible
  17. Imminent Transmission Failure
    • 1) Land immediately
    • 2) Lock harness
Author
scottb170
ID
190022
Card Set
TH-57 Memory EP Steps
Description
TH-57
Updated

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