MSFS 2024 · Rotary

Bell UH-1H Huey Emergency Procedures

Bell UH-1H Huey Emergency Procedures - Full Reference

All 12 procedures with immediate action steps, in full.

Engine Malfunction - Hover (TM 9-11)

Immediate actions · 6 steps

  1. 1
    Autorotate
  2. 2
    CollectiveADJUST as required to maintain rotor RPM
  3. 3
    PedalsADJUST as required
  4. 4
    ThrottleADJUST as required
  5. 5
    CollectiveDO NOT DECREASE when the failure occurs at a hover in ground effect
  6. 6
    Cautiondeceleration capability is limited at low airspeed and low altitude; avoid striking the ground with the tail rotor

Engine Malfunction - Low Altitude/Low Airspeed or Cruise (TM 9-12)

Immediate actions · 6 steps

  1. 1
    Autorotate
  2. 2
    EMER GOV OPNSGOV switch EMER, throttle adjust to control RPM, land as soon as possible
  3. 3
    Airspeed52 KIAS nose pitot / 63 KIAS roof pitot for minimum rate of descent
  4. 4
    Airspeed92 KIAS nose pitot / 98 KIAS roof pitot for maximum glide distance
  5. 5
    Rotor RPMMAINTAIN within limits; at high gross weight apply collective to keep RPM below the upper limit
  6. 6
    If time permitstransmit MAY DAY, set transponder to emergency, jettison external stores, lock shoulder harness

Engine Restart - During Flight (TM 9-13)

Immediate actions · 9 steps

  1. 1
    ThrottleOFF
  2. 2
    STARTER GEN switchSTART
  3. 3
    FUEL switchesON
  4. 4
    GOV switchEMER
  5. 5
    Starter switchPRESS
  6. 6
    ThrottleOPEN SLOWLY to 6,400 to 6,600 RPM as N1 passes through 8 percent, controlling rate to prevent exceeding EGT limits
  7. 7
    Starter switchRELEASE as N1 passes through 40 percent
  8. 8
    START FUEL switchOFF and STARTER GEN switch to STANDBY once powered flight is reestablished
  9. 9
    Land as soon as possible

Complete Loss of Tail Rotor Thrust (TM 9-21)

Immediate actions · 7 steps

  1. 1
    HoverAUTOROTATE
  2. 2
    In flightif no safe landing area is immediately available and powered flight is possible, continue to a suitable area above minimum rate of descent airspeed
  3. 3
    Degree of roll and sideslipVARY with throttle and/or collective
  4. 4
    When landing area is reachedAUTOROTATE using an airspeed above minimum rate of descent
  5. 5
    Cautionthe flare and abrupt use of collective will rotate the nose left; DO NOT correct with throttle and DO NOT add power at this time
  6. 6
    If area suitabletouch down at a ground speed above effective translational lift, using throttle as necessary for directional control
  7. 7
    Warningbelow 30 to 40 knots the sideslip may become uncontrollable and the helicopter will begin to revolve on the vertical axis

Hydraulic Power Failure (TM 9-37)

Immediate actions · 7 steps

  1. 1
    AirspeedADJUST as necessary to attain the most comfortable level of control movements
  2. 2
    HYD CONT circuit breakerOUT
  3. 3
    If hydraulic power is not restoredHYD CONT circuit breaker IN
  4. 4
    HYD CONT switchOFF
  5. 5
    Land as soon as practicable at an area that will permit a run-on landing with power
  6. 6
    Maintain airspeed at or above effective translational lift until touchdown
  7. 7
    Warningdo not pull or push circuit breakers or move the HYD CONT switch during takeoff, approach and landing, or while not in level flight

Fire - Engine Start (TM 9-30)

Immediate actions · 4 steps

  1. 1
    Start switchPRESS and hold until EGT is in the normal operating range
  2. 2
    ThrottleOFF immediately as the starter switch is pressed
  3. 3
    FUEL switchesOFF
  4. 4
    Noteflames emitting from the tailpipe are acceptable if EGT limits are not exceeded

Fire - In Flight (TM 9-32)

Immediate actions · 6 steps

  1. 1
    Power-OnLAND AS SOON AS POSSIBLE
  2. 2
    Power-OnEMER SHUTDOWN after landing
  3. 3
    Power-OffAUTOROTATE
  4. 4
    Power-OffEMER SHUTDOWN
  5. 5
    Consider VFR/IMC, night, altitude and available landing areas when choosing power-on or power-off
  6. 6
    Consider jettisoning external stores prior to landing

Engine Overspeed (TM 9-17)

Immediate actions · 4 steps

  1. 1
    CollectiveINCREASE to load the rotor and maintain RPM below the maximum operating limit
  2. 2
    ThrottleREDUCE until normal operating RPM is attained, then continue with manual throttle control
  3. 3
    If throttle reduction does not reduce RPMEMER GOV OPNS
  4. 4
    Warningland even if manual throttle corrects the overspeed, since there is a chance of impending engine failure from debris generated by the initial N2 failure

Transmission Oil Hot or Low Pressure (TM 9-19)

Immediate actions · 4 steps

  1. 1
    Land as soon as possible
  2. 2
    EMER SHUTDOWN after landing
  3. 3
    Warningdo not close the throttle during this procedure; descent and landing must be made with normal engine operating RPM
  4. 4
    Noteif transmission oil pressure drops to zero PSI, a valid cross reference cannot be made with the oil temperature indicators

Main Driveshaft Failure (TM 9-25)

Immediate actions · 3 steps

  1. 1
    Autorotate
  2. 2
    EMER SHUTDOWN
  3. 3
    Indicationsleft yaw, increase in engine RPM, decrease in rotor RPM, low RPM audio alarm, RPM warning light

Engine Compressor Stall (TM 9-15)

Immediate actions · 4 steps

  1. 1
    CollectiveREDUCE
  2. 2
    DE-ICE and BLEED AIR switchesOFF
  3. 3
    Land as soon as possible
  4. 4
    Indicationssharp rumble or loud sharp reports, severe engine vibration, rapid rise in EGT

Mast Bumping / Low G (TM 8-45, 8-53, 9-41)

Immediate actions · 5 steps

  1. 1
    Avoid abrupt flight control inputsthey cause excessive main rotor flapping which may result in mast bumping
  2. 2
    Intentional flight below +0.5 G is prohibited
  3. 3
    Avoid abrupt forward cyclic inputsthe helicopter may roll right simultaneously
  4. 4
    If bumping occurs during startup or shutdownreposition controls
  5. 5
    Intentional maneuvers beyond +/-30 degrees pitch or +/-60 degrees roll are prohibited