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TH-67 Emergency Procedures Exam

Instructions: Answer each question in its entirety. If you do not answer it 100% correct, it is wrong. Punctuation and capitalization errors will not count against you. Spelling errors WILL count against you.

  1. Warning:
  2. Caution:
  3. Note:
  4. Immediate Actions During an Emergency:
    The urgency of certain emergencies require immediate and instinctive action by the pilot. The most important single consideration is . If time permits during a critical emergency:
  5. Land as Soon as Possible:

    Primary Consideration:

  6. Land as Soon as Practicable:

    Primary Consideration:

  7. Engine Malfunction:
  8. Indications of an Engine Failure:

    Min Rate of Descent: kts. Max Glide: kts.
  9. Autorotate:

  10. Emergency Shutdown:

    During an in-flight emergency, the pilot should consider (3 things) before turning the battery switch off: , selecting , and the possible .

  11. Engine Failure - Hover:
    1. - accomplish after landing
  12. Engine Failure - Low Altitude/Airspeed/Cruise:
    1. - accomplish during descent if time permits
  13. Engine Restart - During Flight:
  14. Engine Compressor Stall:
    Engine compressor stall may be characterized by a sharp rumble or a series of loud sharp reports, severe engine vibration, and a rapid rise in TOT. Should engine compressor stall occur:
  15. Engine Underspeed:
    • If underspeed occurs, the collective must be to maintain rotor RPM within limits.
    • If powered flight with rotor in the green can be accomplished: in an area that will permit a run-on landing.
    • An engine underspeed below 90% results in rotor RPM decay below minimum safe limits. Should this occur:
      1. - accomplish during descent if time permits
  16. Engine Overspeed:
    Engine overspeed will be indicated by a right yaw, rapid increase in both rotor and engine RPM, and an increase in engine and rotor noise. If an engine overspeed is experienced:
    1. to load the rotor and sustain engine/rotor RPM below the maximum operating limit.
    2. until normal operating RPM is attained.
    3. If powered flight with rotor in the green can be accomplished: Perform a power-on approach and landing by controlling the RPM manually with the throttle.
    If RPM cannot be controlled by throttle adjustment:
    1. when over a safe landing area.
    2. - accomplish during descent if time permits
  17. Engine Surges:
    If surges in engine RPM are experienced:
    If engine surges are not controlled in steps a & b above:
    1. when over a safe landing area.
    2. - accomplish during descent if time permits
  18. Loss of Tail Rotor Effectiveness (LTE):
    • (First two items should be performed simultaneously.)
    • As recovery is affected, adjust controls for normal flight.

    • Warning: Collective reduction will aid in arresting the yaw rate; however if a rate of descent has been established, collective reduction may increase the rate of descent to an excessive value. The resultant large and rapid increase in collective to prevent ground or obstacle contact may further increase the yaw rate, decrease the rotor RPM, and cause an over torque and/or over-temperature condition. Therefore, the decision to reduce collective must be based on the pilot assessment of the altitude available for recovery.

    • If spin cannot be stopped and crash is imminent, an autorotation may be the best course of action. Maintain full left pedal until the spin stops, then adjust to maintain heading.
  19. Low Inlet Pressure Caution Light - On:
    • If caution light remains on -
    • If caution light goes out -
    • (Related engine parameters should be monitored frequently until landing.)
    • Caution:
  20. Engine Icing:
    • Note: When anti-icing system is on, TOT will rise for same power setting.
    • (if conditions warrant)
    • Limits: Engine anti-ice be used in ambient temperatures above degrees C. Engine anti-ice shall be for flight in at temperatures of degrees C and below.
    • Engine Power: If on decrease both max and continuous torque by %.
    • Fuel Flow: With anti-ice on fuel flow will increase: anti-ice - on = %, bleed air heater - on = %, both systems - on: %
  21. Low Engine Oil Pressure with High Engine Oil Temperature:
  22. (If pressure below 50 PSI or temp above 107 degrees C.)
    Note: If engine oil pressure is falling or low and the oil temperature is rising or high, a severe oil leak may be present.
  23. Main Drive Shaft Failure:
    A failure of the main driveshaft will be indicated by a sudden increase in engine RPM, decrease in rotor RPM, a left yaw, activation of the low RPM audio, and illumination of the rotor RPM light. A transient overspeed of N1 and N2 may occur, but will stabilize.
    1. - accomplish after landing
    Warning: The engine must remain in operation to provide power to the tail rotor. Failure to maintain engine power will result in loss of aircraft control during the autorotation. Adjust throttle as required to maintain engine RPM within normal limits.
  24. Clutch Fails to Disengage:
    A clutch failing to disengage in flight will be indicated by the rotor RPM decaying with the engine RPM as the throttle is reduced to the engine idle position when entering an autorotational descent. This condition results in total loss of autorotational capability.

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