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
(3) When the aircraft is with-
in 10 degrees of the select-
ed 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 alti-
tude.
(2) Altitude
hold
(ALT)
switch-indicator (autopi-
lot 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 fol-
lows:
(1) Fly aircraft to test air-
speed.
(2) Airspeed
hold (ALT)
switch-indicator (autopi-
lot mode selector panel) -
Press on.
(3) Aircraft should maintain
airspeed that was being
flown at the time IAS
hold switch was pressed.
i. Check roll command function
of autopilot as follows:
(1) Turn control knob (au-
topilot pitch-turn control
4-9
