Emergency Procedures; Failure Of One Engine - Kazan Helicopters Mi-17-1V Flight Manual

M..-17-1B. Flight manual
6. EMERGENCY PROCEDURES
In all cases of in-flight failures the Captain must report the event over the radio
channel to the flying control officer and, depending on the nature of failure,
flight conditions and reserve time, proceed following the instructions of the
present Section and the flying control officer.
6.1. Failure of one engine
In case of failure of one of the engines the second one (CONTINGENCY
POWER switch being ON) automatically gains an elevated power rating up to
contingency power depending on the helicopter gross weight. The engine con-
tingency power attainment is recognised by 1 % gas generator rotational
speed increment over the takeoff one and by illumination of the L ENG CP/R
ENG CP annunciator.
Note: 1. In case of in-flight failure of 3P,Q-3BM EEC the engine cannot gain
the contingency power.
2. It is permitted to perform OEI flight providing that the, second engine
runs at contingency power for 2,5 minutes without limitations within
0,1% perTBO.
(1) Indications:
(a) Out-of-trim condition of the helicopter felt as a jerk to the right. The
magnitude of out-of-trim depends on the power selling at the mo-
ment of failure and airspeed (the higher is the power selling and the
lower is the airspeed, the higher is out-of-trim).
(b) Reduction of the gas generator rotor speed and TGT of the
f~i1ed
engine.
(c) Increased gas generator rotor speed of the operating engine.
(d) Reduction of the main rotor speed.
(2) Crew's actions upon failure of an engine at altitudes above 100 m:
(a) Reduce the main rotor collective pitch as required for maintenance
of the main rotor speed at a level of not less than 92 %.
(b) Counteract the rolling and turning tendencies by simultaneous and
appropriate application of the control stick and pedals.
(c) Read the engines instruments to recognize the failed engine. Make
sure that CP (contingency power) switch of the operating engine is
set to ON.
(d) Accelerate or decelerate the helicopter to establish an airspeed of
120 km/h.
(e) Move the separate throttle control lever of the failed engine fully
downward.
(f)
Give an order to the Flight Engineer to close the HP fuel shutoff and
fuel fire shutoff valves of the failed engine.
(g) Upon attainment of an airspeed of 120 km/h establish horizontal
flight condition.
(h) Operate the collective pitch control lever to set such a power to the
operating engine at which the helicopter flies without loss of altl-
6-3