Emergency Procedures Flashcards
The following should be performed for all emergencies
- Maintain control of the aircraft
- Alert crew
- Determine the precise nature of the problem
- Complete the applicable emergency procedure or take action appropriate for the problem
- Determine the landing criteria and land as required
Land immediately
Execute a landing without delay
Land as soon as possible
Execute a landing at the first site at which a safe landing can be made
Land as soon as practicable
Extended flight is not recommended. The landing site and duration of the flight are at the discretion of the pilot in command
Engine Malfunction in Flight
*1. Control Nr
Warning: Flying with greater than 110% torque with on engine inoperative may result in unrecoverable decay of Nr in the event of a dual-engine failure
*2. CONTGCY PWR switch - 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 as much as 49% with improperly operating engine inlet anti-ice valves.
*5. External cargo/stores/fuel - Jettison/dump, as required
*6. Identify malfuntion
Engine High-Side Failure in Flight
*1. EMIF - Perform
Note: Ng does not pass through the EDECU and is a highly reliable signal
Note: Torque signal may be erratic or drop off for high side conditions drive by EDECU failure
*2. PCL (malfunction engine) - Retard to set:
a. Torque 10% below good engine
b. Matched Ng
c. Matched TGT
Note: With high collective settings, Nr may increase slowly, making high-side failure confirmation difficult
Engine High-Side Failure on Deck
*1. PCL (malfunctioning engine) - IDLE
Engine Low-Side Failure
*1. EMIF - Perform
Engine Torque or TGT Spiking/Fluctuations
If an engine is spiking/fluctuating and inducing secondary infection in Ng, Np, and/or Nr:
*1. EMIF - Perform
If fuel contamination is suspected:
*2. Land as soon as possible
Warning: PCL movement during engine fluctuations may precipitate an engine failure.
Note: Maintaining a low power setting when moving the 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. EMIF - Perform
*2. PCL (malfunctioning engine) - OFF
Abort Start Causes
- Ng does not reach 14% within 6 seconds of starter initiation
- No oil pressure within 30 seconds after start 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 degrees before idle speed is attained
Caution: During aborted starts, failure to immediately stop fuel flow may result in engine overtemperture
Abort Start EP
To abort start:
*1. PCL - OFF
*2 ENGINE IGNITION switch - OFF
If engine oil pressure is indicated:
*3 Starter - Engage
Engine Malfunction During Hover/Takeoff
*1. Control Nr
*2. CONTGCY PWR switch - ON
If a suitable landing site exists or unable to transition to forward flight:
*3. Set level attitude, climate drift, cushion landing
If able to transition to forward flight:
*4. EMIF - Perform
Dual- Engine Failure
*1. Autorotation - Establish
*2. Immediately 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
Caution: Receiving engine Ng less than 24% prior to advancing PCL to IDLE may result in hot start.
*1. APU Emergency Start Procedure - Perform
Note: Failure to ensure AIR SOURCE ECS/START switch is in ENG prior to crossbleed start will result in a failed engine start.
*2. ENGINE IGNITION switch - NORM
*3. Fuel selector lever - DIR or XFD
*4. PCL - OFF
*5. Starter - Engage, motor engine
*6. PCL - IDLE (TGT 80 or less, if time permits)
*7. PCL - Advance to FLY after start dropout
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
APU Emergency Start
*1. ECS - OFF
*2. AIR SOURCE ECS/START switch - APU
*3. FUEL PUMP switch - APU BOOST
*4. APU CTRL switch - ON
*5. APU GENERATOR switch - ON
Ground Resonance
Caution: If ground resonance is encountered and an immediate safe takeoff is not possible priority shall be given to immediate reduction of main rotor speed.
If safe takeoff is possible:
*1. Take off immediately
If safe takeoff is not possible:
*2. PCLs - OFF
*3. Rotor brake - Apply
Warning: Ground resonance can occur rapidly (within three seconds), and produce violent vibrations resulting in difficulty reaching PCLs and pilot-induced oscillations. Vibrations can grow severe enough to result in dynamic departure of rotor blades and potential dynamic rollover.
Unusal Vibrations on Deck
Caution: Application of the rotor brake may aggravate lead/lag tendencies and cause a mechanical failure
Caution: Continued operations with unusual on-deck vibrations may result in rotor system damage or mechanical failure.
*1. Collective - Lower
*2. PCLs - OFF
*3. Rotor brake - Apply as required
Hung Droop Stops
*1. Reengage rotor to greater than 75% Nr
Low Rotor RPM
*1. Control Nr
Main Transmission Malfunction
Warning: Possible indications of main transmission imminent failure may include: yaw attitude excursions with no control input, an increase in power required for fix collective settling, failure of a main generator or hydraulic pump, increased noise, increased vibration levels, or abnormal fumes in the cabin
If failure is imminent:
*1. Land immediately
If secondary indications are present:
*2. Land as as possible
Note: A minimum power airspeed and low altitude flight profile (approximately 80 feet and 80 KIAS) permits a quick flare to ditching
Warning: Operation of the main gearbox with no oil pressure may result in loss of tail rotor drive
Note: A loss of all main transmission lubricating oil may result in unreliable temperature indications from the main transmission temperature gauge and temperature sensor (caution)
Tail/Intermediate Transmission Malfunction
Warning: Possible indications of tail rotor imminent failure may include tail/intermediate transmission cautions accompanied by strong medium-frequency vibrations and or hot metal fumes or any other associated indications
If failure is imminent:
*1. Land immediately
If failure is not imminent:
*2. Land as soon as possible.
Warning: High power setting require maximum performance of the tail rotor drive system failure
Note: Transiting at an altitude sufficient to enter an autorotation is recommended
Note: An INT XMSN OIL HOT or TAIL XMSN OIL HOT caution occurring simultaneously with a WCA MISCOMPARE alert may be an indication of a mission computer/backup computer card failure