TM 55-1510-222-MTF
P R O C E D U R E
T R O U B L E S H O O T I N G
R E F E R E N C E
(8) HOLD button - Depress
to restore the display to
normal.
p. Automatic leg switching -
Check as follows:
(1) ROLL LIM key - 25°
(dim)
for
the
first
waypoint.
(2) ROLL LIM key - 10°
(lighted)
for
second
waypoint.
(3) Check that the aircraft
changes course smoothly.
q. Attitude mode - Check as fol-
lows:
( 1) Mode selector - ATT after
passing the starting point
and observing the present
position.
(2) Check that INS attitude
signals continue to be
available by monitoring
instruments.
(3) Check that the instru-
ments can operate from
other navigation signals
not coming from the INS.
*4.
Audio control panel and inter-
phone system - Check each unit
as follows:
a. Interphone functional check:
(1) Receiver selector switches
- OFF.
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