CH-47F: Emergency Procedures FULL Flashcards
Land as Soon as Possible
- Execute a landing to the nearest suitable landing area (e.g. open field) without delay. The primary consideration is to ensure the survival of occupants.
Land as Soon as Practicable
- Execute a landing at the nearest suitable airfield/heliport.
Autorotate
- Adjusting the flight controls as necessary to establish an autorotational descent and landing.
- Thrust CONT lever - Adjust as required to maintain NR
- Pedals - Adjust as required
- Cyclic - Adjust as required
EMER ENG Shutdown
- Engine shutdown without delay.
- Engine shutdown in flight is usually not an immediate action item unless a fire exists.
- Before executing an engine shutdown, identify the affected engine by checking indications of TQ, NR, NG, PTIT, engine oil pressure, and the ENG 1 (2) FAIL warning.
- ENG COND Lever - STOP
- FIRE PULL handle - Pull as required
- FIRE PULL handle - Twist clockwise or counterclockwise as required (engine fire only)
Abort Start
- Engine shutdown to prevent PTIT from exceeding limits or whenever abnormal operation is indicated.
- If high PTIT was indicated, the engine must be motored to decrease PTIT below 260°C.
- ENG COND Lever - STOP
- ENG START Switch - Motor (if high PTIT is indicated)
Emergency Warning Signals and Exits
- Prepare for ditching, or crash landing - 3 short rings
- Water or ground contact - Sustained ring
Engine Hot Start
- ABORT START
NOTE
Immediately alternate motoring engines, until rotors are stopped, to reduce the possibility of engine residual fire.
Residual Fire During Shutdown
- Caused by residual fuel igniting in the combustion chamber
- ABORT START
- FIRE PULL handle (affected engine) - Pull
- FIRE PULL handle - Twist clockwise or counterclockwise as required (engine fire only)
Engine Compartment/APU/Fuselage/Electrical Fire - Ground
- EMER ENG SHUTDOWN
- APU switch** - **OFF
- BATT switch** - **OFF
In-Flight Fire Procedures
- LAND AS SOON AS POSSIBLE
- CABIN HEATER BLOWER circuit breaker (No. 2 PDP/C31) - Pull
- Cockpit windows - Closed
- SMOKE AND FUME ELIMINATION (as required)
After landing:
- EMER ENG SHUTDOWN
APU Fire - Flight
- APU switch - OFF
- IN-FLIGHT FIRE PROCEDURES - Perform
Engine Fire - Flight
- IN-FLIGHT FIRE PROCEDURES - Perform
- Engine fire - Confirm
- EMER ENG SHUTDOWN (affected engine)
Electrical Fire - Flight
WARNING
A dual engine flameout may occur if both generator switches are turned off above 6,000 feet PA. All fuel boost pumps will be inoperative.
- IN-FLIGHT FIRE PROCEDURES - PERFORM
- A/S - Below 100 KCAS or Vne, whichever is slower
- GEN 1 and GEN 2 switches - OFF
After landing:
- BATT switch - OFF
Smoke and Fume Elimination
- A/S - Above 60 KCAS
- Pilot’s sliding window - Open
- Helicopter attitude - Yaw left 1/2 - 1 ball width on inclinometer
- Upper half of main cabin door - Open
- RAMP EMER switch - As required
- Cargo loading ramp - As required
- Copilot’s sliding window - Closed
- NVG curtain - Open (if applicable)
Emergency Descent
CAUTION
In executing any emergency descent, regardless of engine power available, it is imperative that the helicopter be maneuvered into a position from which a survivable landing can be accomplished.
Transition from the following descent techniques into an appropriate landing attitude/airspeed/RD should begin prior to descending below 600 ft AGL.
High Speed Straight Ahead Descent
- This procedure produces the highest R/D, but also produces high airspeeds which must be dissipated prior to landing.
- NR: 104%
- A/S: 130-150 KCAS
- Recovery: at/above 600 ft AGL (decel to 75-85 KCAS)
Out-of-Trim Descent
This procedure places the helicopter in a high R/D and allows simultaneous execution of smoke and fume elimination procedure. In addition, it allows good landing area predictability.
- NR: 104%
- A/S: 100 KCAS
- Trim: 1 ball to the right (left pedal), bank angle 8-10° right with 0 turn rate
- Recovery: at/above 600 ft AGL (decel to 75 KCAS)
Low Speed Maneuvering Descent
Maneuvering the helicopter in steep turns as described below should allow the pilot to fly the helicopter over his intended area during the descent, observe the area of intended touchdown, and make adjustments as required.
- NR: 102%
- A/S: 75-90 KCAS
- Bank angle: up to 60° = desired rate of descent
- Recovery: at/above 600 ft AGL
Autorotative Landing
- Maintain speed at or above the minimum R/D airspeed in autorotation with cyclic.
- 50-75 ft AGL, apply aft cyclic as necessary, not to exceed 20° nose-high, to initiate a smooth deceleration.
- Maintain NR below 108% by adjusting thrust as necessary.
- Do not allow NR to decay below 91% prior to touchdown.
- At approximately 15 ft AGL, apply thrust to slow R/D.
Ditching - Power Off
- AUTOROTATE
Ditching - Power On
- Land in the water away from personnel
- EMER ENG SHUTDOWN
Landing in Trees - Power On
- Approach to a hover - 5 to 10 feet above tree level
- EMER ENG SHUTDOWN
Landing in Trees - Power Off
- AUTOROTATE
Minimum Rate of Descent - Power Off
- The power off minimum R/D is attained at an airspeed of approximately 80 KCAS and 100% NR.
Maximum Glide Distance - Power Off
- The maximum glide distance is attained at an indicated airspeed of 105 KCAS or Vne, whichever is slower, and 100% NR.
Dual Engine Failure - Low Altitude / Low Airspeed
- When both engines fail at low altitude and low airspeed, sufficient altitude is not available to increase NR.
- Establish the best autorotaional airpseed, jettison external cargo (if applicable), and decelerate effectively prior to touchdown.
- Initial thrust control lever adjustment will vary from no reduction at 0 knots airpseed below 20 feet to full reduction at higher airpseeds and altitudes.
- Attempt to maintain at least 96% NR.
Dual Engine Failure - Cruise
- AUTOROTATE
- External cargo - Jettison
- FLT DIR CPLR - Uncouple
- DAFCS modes - OFF
Single Engine Failure - Low Altitude / Low Airspeed / Cruise
- Thrust CONT lever - Adjust as required to maintain NR
- External cargo - Jettison as required
- FLT DIR CPLR - Uncouple
- DAFCS modes - Off
If continued flight is possible:
- LAND AS SOON AS PRACTICABLE
- EMER ENG SHUTDOWN (when conditions permit)
Engine Restart During Flight
- APU - Start
- ENG COND lever (inoperative engine) - STOP, then GND
- FIRE PULL handle - In
- All FUEL PUMP switches - ON
- XFEED switch - As required
- DECU/ECU - Check
- Starting engine - Perform
- APU - Off
Engine Compressor Stall
- Thrust CONT lever - Reduce
If conditions persist and engine power is not required for flight:
- ENG COND lever (affected engine) - Retard to GND. PTIT should decrease, engine should stabilize
- ENG COND lever (affected engine) - FLT. If engine has stabilized and there is no further indication of stall, continue flight
If stall (surge) condition recurs:
- ENG COND lever - GND
- LAND AS SOON AS PRACTICABLE
ENG1 FADEC or ENG2 FADEC Caution
- FADEC INC/DEC switch (affected engine) - Match TQs as required
- Reduce rate of Thrust CONT lever changes
ENG1 FADEC and ENG2 FADEC Cautions
- FADEC INC/DEC switch - Adjust to 100% NR, match TQs
- Recue rate of Thrust CONT lever changes
- LAND AS SOON AS PRACTICABLE
Engine Fluctuations or Excessive Torque Splits Without ENG1 or ENG2 FADEC Caution
- LOAD SHARE switch - PTIT
If engine power fluctuations are not corrected:
- LAND AS SOON AS POSSIBLE
After landing:
- LOAD SHARE switch - TRQ
- No. 1 Engine FADEC switch - REV
If engine power fluctuations are not corrected:
- No. 1 Engine FADEC switch - PRI
- No. 2 Engine FADEC switch - REV
If engine power fluctuations are not corrected:
- No. 2 Engine FADEC switch - PRI
REV1 FAIL and/or REV2 FAIL Caution (without) Associated ENG1/ENG2 FADEC Caution
CAUTION
Do not manually select reversionary mode on affected engine as uncommanded power changes may occur.
REV1 FAIL or REV2 FAIL Caution (with) Associated ENG1/ENG2 FADEC Caution
- The FADEC of the non-malfunctioning engine will attempt to maintain 100% NR. If engine shutdown is required, positively identify the affected engine by observing the ENGINE INSTRUMENTS page.
If engine power is required for flight:
- LAND AS SOON AS POSSIBLE
- EMER ENG SHUTDOWN as required
If engine power is not required for flight:
- EMER ENG SHUTDOWN as required
- LAND AS SOON AS PRACTICABLE
REV1 and REV2 FAIL Caution(s) (with) Associated ENG1/ENG2 FADEC Caution
- LAND AS SOON AS POSSIBLE
- EMER ENG SHUTDOWN as required
Engine Transmission Clutch Failure to Engage
- ENG COND lever (affected engine) - STOP
When NG reaches zero (0):
- ENG COND lever (engaged engine) - STOP
Engine Shutdown - Complete Electrical Failure
- FUEL VALVE No. 1 and No. 2 Engines - Close
- Normal Shutdown - Perform
Engine Shutdown - Condition Lever Failure
- FIRE PULL handle (affected engine) - Pull
- Normal shutdown - Perform