TM 55-1510-220-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
F.
AVIONICS FLIGHT CHECKS.
*1. Autopilot Flight Check - Perform as follows:
Check 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 - 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.
4-8
