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 TM 1-1510-223-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
ENGINE RUNUP (CONT)
l.
PNEUMATIC
PRESSURE
gage/GYRO
SUCTION gage - Check in green arc.
m. CABIN CLIMB indicator - Check for descent
indication within 10 - 15 seconds, then release
test switch.
n.
LEFT PNEU & ENVIRO BLEED AIR valve switch
- Off.
o.
Repeat steps e through m using the right bleed
air valve.
p.
CABIN PRESS switch - Set to pressure position
(center).
q.
CABIN ALT controller - Reset as required.
r.
Cabin pressurization RATE control - Reset as
required.
s.
PNEU & ENVIRO BLEED AIR valve switches (2)
- As required.
* 9.
Rudder boost - Check as follows:
a.
RUDDER BOOST/YAW CONTROL TEST switch
- YAW CONTROL TEST. Check that RUDDER
BOOST annunciator light (flight director
annunciator panel) is illuminated.
b.
Yaw damper - Engage. Yaw damper should not
engage.
c.
RUDDER BOOST/YAW CONTROL TEST switch
- RUDDER BOOST. Check that RUDDER
BOOST annunciator light is illuminated.
2-46
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