Quantcast FD and ATT annunciations on the EADI

 

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Flight director/autopilot annunciators/alerter horns
Up
TM-1-1510-223-MTF Maintenance Test Flight Manual Army Model RC-12
Next
Radio altimeter
TM 1-1510-223-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
PRIOR TO MAINTENANCE TEST FLIGHT (CONT)
(b) Autopilot disconnect horn sounds
(3) SBY
pushbutton switch indicator-
Release.
(4) FD and ATT annunciations on the EADI
- Check extinguished.
(5) TRIM annunciators (autopilot controller)
- Check extinguished.
NOTE
Steady illumination of the TRIM UP or TRIM DN
annunciator on the autopilot controller indicates that
the  autopilot  automatic  synchronization  is  not
functioning correctly and that the autopilot should not
be engaged in flight.
(6) TURN knob (autopilot controller) -
Check in center detent position.
(7) ELEV TRIM switch (pedestal extension)
- ELEV TRIM. Check ELEC TRIM OFF
annunciator extinguished.
(8) RUDDER
BOOST/YAW CONTROL
TEST switch (pedestal extension) -
RUDDER BOOST.  Check RUDDER
BOOST annunciator extinguished.  (If
RUDDER
BOOST
annunciator
illuminates,  cycle  rudder  boost/yaw
control test switch to OFF then back to
RUDDER BOOST.)
2-20

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