Chapter 9 Flashcards
LAND AS SOON AS POSSIBLE
Landing at the nearest suitable landing area (e.g., open field) without delay. (The promary consideration is to ensure the survival of occupants.)
LAND AS SOON AS PRACTICABLE
Landing at a suitable landing area. (The primary consideration is the urgency of the emergency.)
AUTOROTATE
Adjusting the flight controls as necessary to establish an autorotational descent and landing.
ESTABLISH SINGLE-ENGINE AIRSPEED
maneuvering the aircraft to an appropriate airspeed that will allow for continued flight under partial power conditions to a suitable recovery area.
(1) Cyclic - Adjust as required
(2) Collective- Adjust as required to maintain % RPM R within normal operating range
(3) Establish appropriate airspeed
EMER ENG SHUTDOWN
Engine shutdown without delay. Before attempting an engine shutdown, identify the affected engine by checking ENG OUT warnings, % RPM, % TRQ, ENG OIL PRESS, TGT TEMP, and Ng SPEED.
(1) ENG POWER CONT lever(s) - OFF
(2) ENG FUEL SYS selector(s) - OFF
(3) FUEL BOOST PUMP CONTROL switch(es) - OFF
CAUTION- If TGT rises above 538 C after shutdown, place AIR SOURCE HEAT/START switch as required, turn ENGINE IGNITION switch OFF, and press starter to motor engine for 30 seconds or until TGT decreases below 538 C.
LOCKOUT
Manual control of engine RPM while bypassing DEC/EDECU functions. Bypass of the engine control will be required when % RPM 1 or 2 decreases below normal demand speed due toa malfunction of the DEC/EDECU.
WARNING: Gong to DEC/EDECU LOCKOUT to obtain additional power does not remove Maximum Fuel Flow or Ng limits. % RPM R will decrease below normal operating range if Maximum Fuel Flow or Ng limits are exceeded.
CAUTION: When engine is controlled with ENG POWER CONT lever in LOCKOUT, engine response is much faster and TGT limiting system is inoperative, Care must be taken not to exceed TGT limits and keeping % RPM R and % RPM 1 and 2 in operating range.
ENG POWER CONT lever - Pull down and advance full forward while maintaining downward pressure, then adjust to set % RPM R as required.
EMER APU START
defined as APU start to accomplish an emergency procedure.
CAUTION: Ensure that the mask blowers are disconnected and position the BCA MCU control knobs to OFF prior to switching from main power to APU power.
(1) FUEL PUMP switch - APU BOOST
(2) APU CONT switch - ON
ENGINE MALFUNCTIONS WARNING
Significant droop that results in the generators dropping off line or a dual generator or converter failure will result in a partial power loss. This power loss will be due to the opening of engine anti-ice valves and will result in a further reduction of maximum torque available by 18% (701c/701D/CC).
SINGLE-ENGINE FAILURE
WARNING: Do not respond to ENG OUT warning and audio until checking TGT TEMP, Ng SPEED, and % RPM 1 and 2.
- ESTABLISH SINGLE-ENGINE AIRSPEED
(2) External cargo/stores - Jettison (if required).
If continued flight is not possible: - LAND AS SOON AS POSSIBLE
If continued flight is possible: - LAND AS SOON AS PRACTICABLE
DUAL-ENGINE FAILURE
WARNING: Do not respond to ENG OUT warnings and audio until checking TGT TEMP and % RPM R.
AUTOROTATE.
ECU/DEC/EDECU LOW SIDE FAILURE
- ESTABLISH SINGLE-ENGINE AIRSPEED.
If partial flight cannot be maintained:
(2) ENG POWER CONT lever (low % TRQ/TGT TEMP engine) - LOCKOUT. Maintain % TRQ approximately 10% below other engine. - LAND AS SOON AS PRACTIABLE.
ECU/DEC/EDECU HIGH SIDE FAILURE
- ESTABLISH SINGLE-ENGINE AIRSPEED
(2) ENG POWER CONT lever (high % TRQ/TGT TEMP engine ) - Retard. Maintain % TRQ approximately 10% below other engine - LAND AS SOON AS PRACTICABLE.
If the affected engine does not respond to ENG POWER CONT lever movement in the range between FLY and IDLE, the HMU may be malfunctioning internally.
If this occurs:
(4) Perform EMER ENG SHUTDOWN (affected engine)
(5) Refer to single-engine failure emergency procedure
% RPM INCREASING/DECREASING (OSCILLATION)
- ESTABLISH SINGLE-ENGINE AIRSPEED
(2) Slowly retart the ENG POWER CONT lever on the suspected engine.
If the oscillation stops and partial power flight cannot be maintained:
(3) Place that engine in LOCKOUT and manually control the power - LAND AS SOON AS PRACTICABLE.
If the oscillation continures:
(5) Place the ENG POWER CONT lever back to FLY and retard the ENG POWER CONT lever of the other engine
If partial power flight cannot be maintained:
(6) Place the engine in LOCKOUT, manually control the power. - LAND AS SOON AS PRACTICABLE
% TRQ SPLIT BETWEEN ENGINES 1 AND 2
- ESTABLISH SINGLE-ENGINE AIRSPEED
(2) If TGT TEMP of one engine exceeds the limiter (701C/701D/CC 875 C with low power engine below 50% TRQ), retard ENG POEWR CONT lever on that engine to reduce TGT TEMP. Retardthe ENG POEWR CONT lever to maintain torque of the manually controlled engine at approximately 10% below the other engine.
(3) If TGT TEMP limit on either engine is not exceeded, slowly retard ENG POWER CONT lever on high % TRQ engine and observe %TRQ of low power engine.
(4) If % TRQ of low power engine increases, ENG POWER CONT lever on high power engine - Retard to maintain % TRQ approximately 10% below other engine (the high power engine has been identified as a high side failure).
(5) If % TRQ of low power engine does not increase, or % RPM R decreases, ENG POWER CONT lever - Return high power engine to FLY (the low power engine has been identified as a low side failure).
(6) If additional power is required, low power ENG POWER CONT lever, momentarily move to LOCKOUT and adjust to set % TRQ approximately 10% below the other engine. - LAND AS SOON AS PRACTICABLE.
