TM 55-1510-219-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
f.
Check autopilot VOR/ILS operation as
follows:
(1)
Vor receiver - Set.
(2)
NAV
switch
(autopilot
mode
selector panel) ON.
(3)
When the aircraft is within 10
degrees of the selected radial it
should
begin
a
gradual
interception of the radial or
glideslope signal.
g.
Check autopilot altitude hold function as
follows:
(1)
Fly aircraft to test altitude.
(2)
Altitude
hold
switch-indicator
(autopilot mode selector panel) -
Press on.
(3)
Aircraft
should
maintain
the
altitude being flown at the time
the
ALT
hold
switch
was
pressed.
h.
Check autopilot indicated air-speed
hold function as follows:
(1)
Fly aircraft to test air-speed.
(2)
Airspeed
hold
switch-indicator
(autopilot mode selector panel)
Depress on.
(3)
Aircraft should maintain airspeed
that was being
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