TM 1-1510-224-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
(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.
(d)
RUDDER BOOST/YAW CONTROL
TEST switch - Off (center). Check
that RUDDER BOOST annunciator
light is extinguished.
(e)
RUDDER BOOST/YAW CONTROL
TEST switch - RUDDER BOOST.
(f)
Yaw damper pushbutton switch -
Depress to engage yaw damper.
Check that YD ENG annunciator is
illuminated.
(g)
Left POWER lever - Advance. At a
torque differential of approximately
50%, observe that the YD ENG
annunciator light
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