Emergency Procedures CH.9 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
NOTEImmediately 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: 5. 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
WARNINGA 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: 4. 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
CAUTIONIn 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: 100KCAS
- 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 75KCAS)
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: 75-90KCAS
- 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.