TM 1-1510-225-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
LOW SPEED SYSTEMS CHECK (CONT)
propeller unfeathering - Check as fol-
lows:
(a) AUTOFEATHER switch - ARM.
(b) Airspeed - 120 KIAS.
(c) PROP levers - Set 2000 RPM.
(d) POWER levers - Set as required
to arm autofeather system.
(e) CONDITION lever (engine to be
feathered) - IDLE CUTOFF.
* (f)
Record the time from fuel cutoff
until propeller is feathered. (Pro-
peller is considered to be feath-
ered when the blades are indi-
vidually visible to the human eye,
but the propeller is still rotating.)
Time to feather shall not exceed
10 seconds.
NOTE
For proper autofeather operation, propeller must
stop completely.
(g) Engine cleanup.
(1) CONDITION lever - FUEL
CUTOFF.
(2) AUTO IGNITION switch -
OFF.
(3) AUTOFEATHER switch -
OFF.
(4) GEN switch - OFF.
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