Engine Emergency Procedures

Question 1

The following shall be performed for all EPs:

Answer 1

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

Question 2

Engine Malfunction in Flight

2 W

Answer 2

1. 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.

2. Contingency power - On
3. Single-engine conditions - Establish
4. 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.

5. External Cargo/stores/fuel - jettison/dump, as required
6. Identify Malfunction

Question 3

Engine High-side Failure in Flight

Answer 3

1. EMIF - Perform
2. PCL (malfunctioning engine) - retard to set:
   A. TQ 10% below good engine or
   B. Matched Ng or
   C. Matched TGT

Question 4

Engine High-side Failure on Deck

Answer 4

1) PCLs - IDLE

Question 5

Engine Low-side failure

Answer 5

1) EMIF-Perform

Question 6

Engine Torque or TGT spiking/fluctuations

1 W

Answer 6

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.

Question 7

Compressor Stall

Answer 7

1) EMIF- perform

2) PCL (malfunctioning engine) - IDLE

Question 8

Engine High-speed shaft failure

1 C

Answer 8

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

Question 9

Abort start

Answer 9

1) PCL- OFF
2) ENGINE IGNITION switch- OFF

IF ENGINE OIL PX is indicated:

3) Starter- ENGAGE

Question 10

5 things we abort a start for?

Answer 10

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

Question 11

Engine Malfunction During Hover/Takeoff

Answer 11

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

Question 12

Dual- Engine Failure

Answer 12

1) Autorotation- establish
2) Immediate landing/ditching emergency procedure- perform

If time and altitude permit:

3) Engine air restart emergency procedure- Perform

Question 13

Single-engine failure in flight

Answer 13

1) EMIF -Perform

Question 14

Engine Air Restart

1 W

Answer 14

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.

Question 15

APU Emergency start procedure

Answer 15

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