TM 55-1510-220-10
b.
Engine Malfunction During And After Takeoff.
The action to be taken in the event of an engine
malfunction during takeoff depends on whether or not
liftoff speed (V
lof
) has been attained. If an engine fails
immediately after liftoff, many variables such as airspeed,
runway remaining, aircraft weight, altitude at time of
engine failure, and single-engine performance must be
considered in deciding whether it is safer to land or
continue flight.
c.
Engine Malfunction Before Liftoff (Abort). If an
engine fails and the aircraft has not accelerated to
recommend liftoff speed (Vlof), retard power levers
immediately to IDLE and stop the aircraft with brakes and
reverse thrust. Perform the following:
1. Power levers - IDLE.
2. Braking - As required.
NOTE
If insufficient runway remains for stopping
perform steps 3 thru (5.)
(3.)
Condition levers - FUEL CUTOFF.
(4.)
Fire pull handles - Pull.
(5.)
Master switch - OFF.
d.
Engine Malfunction After Liftoff. If an engine fails
after becoming airborne, maintain single-engine best rate-
of-climb speed (V
yse
) or, if airspeed is below (V
yse
),
maintain whatever airspeed is attained between liftoff
(V
lof
) and (V
yse
) until sufficient altitude is attained to trade
altitude for airspeed and accelerate to (V
yse
).
(1)
Engine Malfunction after liftoff (abort), perform
the following and land in a wingslevel attitude:
1. Power levers - Reduce.
2. Gear - DN.
3.
Complete normal landing.
NOTE
If able to land on remaining runway, check
gear down and use brakes and reverse
thrust as required. If insufficient runway
remains
for
stopping,
perform
the
following:
(4.)
Condition levers - FUEL CUTOFF.
(5.)
Fire pull handles - Pull.
(6.)
Master switch - OFF.
(2)
Engine malfunction after liftoff (flight continued)
perform the following:
1. Power - Maximum controllable.
NOTE
If
airspeed
is
below
V
yse
,
maintain
whatever
airspeed
has
been
attained
(between (V
lof
) and V
yse
) until sufficient
altitude can be obtained to trade off
altitude
for
airspeed
to
assist
in
acceleration to V
yse
.
2. Gear - UP.
3. Flaps - UP.
4. Landing lights - OFF.
5.
Brake deice - OFF.
6.
Engine cleanup - Perform.
NOTE
Holding three to five degrees bank (one-
half ball width) towards the operating
engine will assist in maintaining directional
control and improve aircraft performance.
e.
Engine Malfunction During Flight. If an engine
malfunctions during cruise flight, maintain control of the
aircraft while maintaining heading or turn as required.
Add power as required to keep airspeed from decaying
excessively and to maintain altitude. Identify the failed
engine by feel (if holding rudder pressure to keep the
aircraft from yawing; the rudder being pressed indicates
the good engine) and engine instruments, then confirm
identification by retarding the power lever of the
suspected failed engine. Refer to Chapter 7 for single-
engine cruise information. If one engine malfunctions
during flight, perform the following:
1. Autopilot/yaw damp - DISENGAGE.
2. Power - As required.
3. Dead engine - Identified.
4. Power lever (dead engine) - IDLE.
9-3
