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 TM 55-1510-218-MTF
TROUBLESHOOTING
PROCEDURE
REFERENCE
BEFORE TAXIING (CONT)
s. Go-around switch (left power
Iever) - Depress. Check that au-
topilot disengages and that
flight director commands a 7
nose up, wings Ievel attitude.
*10. Autopilot trim fail system - Check
as follows:
a . Autopilot - Engage. Command
DN with autopilot pitch thum-
bwheel and engage AUTO PI-
LOT TRIM TEST switch when
elevator trim wheel starts to ro-
tate.
b. Verify that autopilot disengages
and AP TRIM FAIL and MAS-
TER WARNING lights illumi-
nate within 10 seconds.
NOTE
The AP TRIM FAIL annunciator light may
be extinguished by pressing the AP/YD DIS-
CONNECT button on the control wheel to
the first detent.
c. Repeat steps a and b except
command nose UP trim.
*11.
Altitude alerter - Check as follows:
2-34
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