TM 1-1510-224-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
observe that the aircraft begins a
gradual interception of the radial or
glideslope signal.
(h)
Check autopilot altitude hold function as
follows:
(1)
Fly aircraft to test altitude.
(2)
ALT switch-indicator (flight director
mode selector) - Press on.
(3)
Verify that the aircraft maintains the
altitude being flown at the time the
ALT hold switch was pressed.
(i)
Check autopilot indicated air-speed hold
function as follow:
(1)
Fly aircraft to test airspeed.
(2)
IAS switch-indicator (flight director
mode selector) - Press on.
(3)
Aircraft should maintain air-speed that
was being flown at the time IAS hold
switch was pressed.
(j)
Check roll command function of autopilot as
follows:
(1)
TURN
control
knob
(autopilot
controller) - Turn to L and R and verify
that autopilot turns aircraft left or right
respectively.
*2.
Slaved compass systems - Check that systems
agree with known magnetic headings within 2
and within 3 of each other.
4-9
