TM 1-1510-224-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
(18) Electrical
equipment
-
As
required.
*(19) Propeller
unfeathering
-
Check
as
follows
with
propeller
in
the
feathered
position
with
the
gas
generator running in HIGH
IDLE.
a POWER
lever
-
IDLE.
PROP lever - Move out of
FEATHER detent to full
forward. Propeller RPM
must reach 1000 RPM in
20 seconds or less.
(i)
Repeat step h for other engine if
required.
NOTE
The landing gear warning horn is automatically
silenced by an altitude sensing switch, provided to
silence the landing gear warning horn when above
12,500 feet.
*13.
Landing gear warning horn - Check as
follows:
C24-26
(a) POWER levers - Retard slowly,
individually,
until
landing
gear
warning horn first sounds.
*(b) Turbine tachometers - Read N1
tachometers on first hearing landing
gear warning horn. Verify that the
landing gear warning horn sounds
when POWER levers are retarded
below 84 to 86% N1 and airspeed is
below 140 KIAS.
2-79
