TM 55-1510-221-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
G. AVIONICS FLIGHT CHECKS.
*1
Autopilot flight check - Perform as follows:
Observe that all channels operate positively and smoothly with no
oscillation of any flight control.
a.
Trim aircraft for straight and level flight.
b.
Turn control - Place in center (detent)
position.
c.
Engage switch - Set to ENG.
d.
Check autopilot heading preselection as
follows:
(1) Autopilot heading selector (on
course deviation
indicator) - Set test
heading
(2) Heading select switch - indicator
(autopilot mode
selector panel) -
Press on.
(3) Aircraft should automatically turn
and roll out on
preselected heading
e.
Check altitude control and selection as
follows:
(1) Pitch thumbwheel (autopilot pitch-
turn panel) - Move UP and DN while
observing that aircraft and
pitch trim
indicator respond properly.
f.
Check autopilot VOR/ILS operation as
follows.
(1) VOR receiver - Set.
4-8
