Emergency Procedures Flashcards
Define “Single-Engine Airspeed”
Maneuvering the aircraft to an appropriate airspeed that will allow for continued flight under partial power conditions to a suitable recover area.
(Adjust cyclic, collective, and airspeed as required)
Define “Emergency Engine Shutdown” and explain the procedure.
Engine shutdown without delay.
Procedures:
Engine control levers, fuel system selectors, and fuel boost pumps - OFF
Motor engine 30 seconds if TGT rises above 538°C on shutdown
Define “Lockout.”
Manual control of the engine RPM while bypassing 701D/CC DEC/EDECU functions.
Note* Under certain conditions the most reliable indication of engine power will be TGT.
Single Engine Failure
- Establish single engine airspeed
(2). External cargo - Jettison (if required)
If continued flight not possible:
3. Land as soon as possible
If continued flight possible:
3. Land as soon as practicable
- Do not respond to ENG OUT warning and audio until checking TGT, NG, and % RPM 1 and 2
Dual Engine Failure
- Auto rotate
- Do not respond to ENG OUT warning and audio until checking TGT, NG, and % rpm 1 and 2.
ECU / DEC / EDECU Low Side Failure
- Establish single engine airspeed
- ENG CONT Lever - lockout, Maintain % TRQ approximately 10% below other engine
- Land as soon as practicable
*Lockout does not remove max fuel flow or NG limits. % RPM R will decrease below normal range if max fuel flow or NG limits are exceeded.
- Care must be taken not to exceed TGT limits and keep RPM within range.
ECU / DEC / EDECU High Side Failure
- Establish single engine airspeed
(2). Engine power control lever - Retard. Maintain % TRQ approximately 10% below other engine - Land as soon as practicable
*If affected engine does not respond to ENG CONT Lever movement in the range between Fly and Idle, the HMU may be malfunctioning internally. If so:
(4). Emergency ENG Shutdown
(5). Refer to single-engine failure
% TRQ Split Between ENG 1 and 2
- Establish Single Engine Airspeed
- Refer to checklist for procedure
1 or #2 Oil FLTR Bypass Caution
- Establish Single Engine Airspeed
(2). ENG CONT Lever - Retard - Land as soon as practicable
Chip #1 or #2 Engine, #1 or #2 ENG Oil Press, #1 or #2 ENG Oil Temp Caution
- Establish single engine airspeed
(2). Eng Control Lever - Retard
*If oil pressure is below minimum limits or if oil temp remains above limits:
(3). Emergency Engine Shutdown
(4). Refer to single - engine failure emergency procedures
Engine High Speed Shaft Failure
- Establish single engine airspeed
(2). Emergency engine shutdown
(3). Refer to single - engine failure emergency procedures
Loss of Tail Rotor Thrust or Tail Rotor Quadrant Caution Appears with Loss of Control at Low Airspeed / Hover (right rotation)
- Collective - Reduce
- Engine Power Control Levers - OFF (5-10’ AGL)
1 Tail Rotor Servo Caution Appears and Back-up Pump on Advisory Does Not Appear or #2 Tail RTR Servo ON Advisory Does Not Appear
(1). Tail Servo Switch - Back-up
(2). Back-up HYD Pump Switch - ON
3. Land as soon as practicable
Main XMSN Oil Pressure or Main XMSN Oil Temp Caution Appears / XMSN Oil Pressure Low / XMSN Oil Temp High
- Land as soon as possible
- If time permits, slow to 80 KIAS
- Emergency APU Start
- Gen #1 and #2 switches - OFF
Chip Input MDL LH or RH Caution Appears
- Establish Single - Engine Airspeed
(2). ENG CONT Lever (affected engine) - Idle - Land as soon as possible
Chip Main MDL Sump, Chip Access MDL LH or RH, Chip Tail XMSN or Chip Int XMSN / Tail XSMN Oil Temp or Int XMSN Oil Temp Caution Appears
- Land as soon as possible
Tail Rotor Quatrant Caution Appears in Cruise Flight
- Collective - adjust to determine controllability (fixed right or left)
- Land as soon as practicable
*If the helicopter is shut down and/or hydraulic power is removed with one tail rotor cable failure, disconnection of the other tail rotor cable will occur.
Loss of Control at Low Airspeed / Hover or Tail Rotor Quadrant Caution Appears (Left Rotation)
- ENG Cont Levers - Retard to decrease % RPM R below 100% and begin a partial power descent
- Collective - Adjust to preserve % RPM R
- ENG Power Control Levers - OFF (5-10’ AGL)
- Collective - Adjust for landing
*Reducing collective in a left rotation will increase rate of turn with the ENG Cont Levers of fly depending on the rate at which the ENG Cont Levers are retarded. It is critical that the pilot on the controls maintain a level attitude, preserve RPM R, and apply cushion for landing.
Main Transmission Failure
- Collective - Adjust only enough to begin a descent with power remaining applied to the main transmission throughout the descent and landing
- Land as soon as possible
- If % RPM R decreases from 100% to below 96% with an increase in torque during steady state flight with no engine malfunction, the main transmission planetary carrier may have failed. During a main transmission planetary carrier failure, it may be impossible to maintain to maintain % RPM R at 100%
- Decreasing % RPM R may be accompanied by a drop in transmission oil pressure of 10 PSI or more and possible unusual vibrations
1 or #2 Fuel FLTR Bypass Caution
(1). ENG fuel sys selector on affected engine - XFD
2. Land as soon as practicable
1 and #2 Fuel FLTR Bypass Cautions
- Land as soon as possible
1 and #2 Fuel Low Cautions
- Land as soon as practicable
1 or #2 Fuel Pressure Caution
*If critical situation:
(1). ENG fuel sys selector on affected engine - XFD
(2). Fuel boost pump control switch on side being used - ON
3. Land as soon as possible
(4). Emergency engine shutdown after landing
*If not critical
(1). ENG fuel sys selector on affected engine- XFD
(2). Fuel boost pump control switches - #1 or #2 Pump -OFF (as applicable)
3. Land as soon as practicable
*Consideration must be given to a possible fuel leak. If around oil cooler access area, may result in fire due to proximity of APU.
1 and #2 Fuel Pressure Cautions
- Land as soon as possible
(2). Emergency shutdown after landing
*Flameout is possible. Emergency shutdown of both engines due to possibility of fire.