TM 55-1510-221-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
d.
Power levers - Set 75% torque.
e. Trim aircraft to trim speed as
shown In figure 3
f.
Airspeed - Reduce by one knot/
second until aircraft stalls
*g.
Airspeed (at warning and at
stall - Record (KIAS)
h.
Roll must be controllable with-
in 15 degrees left or right
*5.
Flap operation - Check as follows.
C31,32
a. Airspeed - Reduce to 198 KIAS
or below.
b.
Flaps - APPROACH Check
flaps for freedom and smooth-
ness of operation and for exces-
sive aircraft roll.
c.
Airspeed - Reduce to 153 KIAS
or below.
d.
Flaps - 100% Check flaps for
freedom and smoothness of op-
eration and for excessive air-
craft roll.
e.
Flap extension and retraction
time - Check as follows.
(1) Airspeed - 153 KIAS.
(2) Flaps - UP
*(3) Flap retraction time -
Check and record. Flaps
should retract from full
down to full up in a maxi-
mum of 9 seconds.
(4) Airspeed - 153 KIAS.
2-51
