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BLEED AIR VALVES switches | Up
TM-1-1510-225-MTF Army Model C-12 Aircraft Manual | Next
AUTOFEATHER |
TM
1-1510-225-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
(q) Cabin controller - Reset as
required.
(r) Cabin pressurization RATE con-
trol - Reset as required.
(s) BLEED AIR VALVES switches
(2) - As required.
*9. Rudder boost - Check as follows:
(a) RUDDER BOOST switch - On.
(b) CONDITION levers - LOW
IDLE.
(c) Left POWER lever - Idle.
(d) Right POWER lever - Advance
until rudder boost is actuated on
the right side. Rudder boost will
actuate at the following values of
N1 and FAT: Above 35°C - 93 to
96%. 10 to 35°C - 90 to 95%,
below 10°C - 87 to 92%.
(e) Repeat procedure for right
engine.
*10. Autofeather/auto ignition - Check as
follows:
F4-15
(a) AUTO IGNITION switches -
ARM.
(b) POWER levers - Approximately
22% torque.
(c) AUTOFEATHER switch - Hold
to TEST (both AUTOFEATHER
annunciators illuminated).
(d) POWER levers - Retard indi-
vidually.
(1) At 16% to 21% torque -
Opposite AUTOFEATHER
annunciator extinguished,
2-31
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