TM 55-1510-215-MTF
(4)
Check that TACAN, INS, and BLEND can be used as
sensors.
(5)
Verify operation in OBS and AUTO/LEG methods as
described in TM 55-1510-215-10-2.
(6)
Verify that FMS data can be displayed on color radar
display.
*H.
Autopilot Flight Check: Check as follows: Observe that all
channels operate positively and smoothly with no oscillation of any
flight control.
WARNING
When the autopilot is engaged, manual application of
a force to the pitch axis of the control wheel for a
period of three seconds or more will result in the
autotrim system operating in the direction creating a
force opposing the pilot. This opposing mistrim force
will continue to increase as long as the pilot applies a
force to the control wheel and will ultimately
overpower
the
autopilot.
If
the
autopilot
is
disengaged under these conditions, the pilot may be
required to exert control forces in excess of 50
pounds to maintain desired aircraft attitude. The
pilot will have to maintain this control force until he
manually retrims the aircraft.
4-11
