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TAXIING - TM-1-1510-223-MTF0054
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TM-1-1510-223-MTF Maintenance Test Flight Manual Army Model RC-12
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Engine acceleration
TM 1-1510-223-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
* 3.
Nosewheel steering - Check for no turning
tendency while taxiing straight ahead with the
same RPM on both engines, with no braking and
no rudder applied to either side. (This check must
be performed with minimum cross wind.) Check
freedom of movement and ability to turn aircraft
using rudder pedals, engines and brakes. Note any
indication of nosewheel vibration or shimmy during
takeoff or landing.
* 4.
Magnetic compass - Check for freedom of
movement.
ENGINE RUNUP
1.
Nose wheel - Center.
* 2.
PARKING BRAKE - Set. The parking brake must
lock without undue pressure on the brake pedals
and release cleanly when PARKING BRAKE
handle is reset.
CAUTION
Monitor oil temperature closely during ground operation with
PROP levers in FEATHER due to lack of air flow over oil
cooler.
* 3.
Engine low idle speed - Check 60 to62% N1,
with propellers feathered.
* 4.
Propeller feathering - Check as follows:
a.
CONDITION lever - HIGH IDLE.
b.
Left PROP lever - FEATHER. Check that propeller feathers
with no hesitation.
2-43

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