Engine Emergency Procedures Flashcards
The following shall be performed for all EPs:
Maintain control of the aircraft
Alert the crew
Determine precise nature of problem
Complete the applicable emergency procedure or take action appropriate for the problem
Determine landing criteria and land as required
Engine Malfunction in Flight
2 W
- Control Nr
WARNING - flying with greater than 110% to work with one engine in operative may result in unrecoverable decay of Nr in the event of dual engine failure.
- Contingency power - On
- Single-engine conditions - Establish
- ENG Anti-Ice switches - As Required
WARNING - with engine anti-ice on, up to 18% torque available is lost. Torque may be reduced by as much as 49% with improperly operating engine inlet anti-ice valves.
- External Cargo/stores/fuel - jettison/dump, as required
- Identify Malfunction
Engine High-side Failure in Flight
- EMIF - Perform
- PCL (malfunctioning engine) - retard to set:
A. TQ 10% below good engine or
B. Matched Ng or
C. Matched TGT
Engine High-side Failure on Deck
1) PCLs - IDLE
Engine Low-side failure
1) EMIF-Perform
Engine Torque or TGT spiking/fluctuations
1 W
1) EMIF -Perform
If fuel contamination is suspected:
2) Land ASAP
Warning- PCL movement during engine fluctuations may precipitate an engine failure. Consider performing APU emergency start procedure prior to moving PCL. Maintaining a low power setting when moving PCL will minimize the Nr decay rate if the malfunctioning engine fails.
Compressor Stall
1) EMIF- perform
2) PCL (malfunctioning engine) - IDLE
Engine High-speed shaft failure
1 C
Caution- following a high-speed shaft failure, the engine will overspeed, the Np overspeed system will flame out the engine, and the auto-ignition system will re-light feature. The engine Np governor will eventually bring Np down toward 100%. The engine must be manually shut down to prevent further damage.
1) EMIF- Perform
2) PCL (malfunctioning engine)- OFF
Abort start
1) PCL- OFF
2) ENGINE IGNITION switch- OFF
IF ENGINE OIL PX is indicated:
3) Starter- ENGAGE
5 things we abort a start for?
Ng does not reach 14% within 6 seconds after starter initiation
No oil px within 30 seconds after starter initiation (do not motor engine)
No light-off within 30 seconds after moving PCL to IDLE
ENG STARTER advisory disappears before reaching 52% Ng
TGT is likely to exceed 851 C before idle speed attained
Engine Malfunction During Hover/Takeoff
1) Control Nr
2) CONTGCY PWR switch - ON
If suitable landing site exists or unable to transition to forward flight:
3)Set level attitude, eliminate drift, cushion landing
If able to transition to forward flight:
4) EMIF - perform
Dual- Engine Failure
1) Autorotation- establish
2) Immediate landing/ditching emergency procedure- perform
If time and altitude permit:
3) Engine air restart emergency procedure- Perform
Single-engine failure in flight
1) EMIF -Perform
Engine Air Restart
1 W
1) APU emergency start procedure- As required
2) ENGINE IGNITION switch- NORM
3) Fuel selector lever- DIR or XFD
4) PCLs - OFF
5) Starter- Engage, motor engine
6) PCL- IDLE (TGT 80 C or less, if time permits)
7) PCL- Advance to FLY after starter drop out
Warning- if APU is unavailable, and a crossbleed start is necessary, maximum torque available will be reduced during the start sequence. Depending on operating conditions, level flight may not be possible. Ensure AIR SOURCE ECS/START switch is placed to ENG for crossbleed starts.
APU Emergency start procedure
1) ECS- OFF
2) AIR SOURCE ECS/START switch- APU
3) FUEL PUMP switch- APU BOOST
4) APU CONTR switch- ON
5) APU GENERATOR switch- ON
