FD and ATT annunciations on the EADI

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.)

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