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![]() TM 1-1510-223-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
PRIOR TO MAINTENANCE TEST FLIGHT (CONT)
f.
RUDDER BOOST/YAW CONTROL TEST
switch (pedestal extension) - RUDDER
BOOST.
g.
RADIO ALT switch (mission control panel) -
ON.
h.
Autopilot EFIS selector switch (instrument
panel) - AP EFIS 1.
i.
Altitude alerter - Check as follows:
(1) Pilot's altimeter - Set to field elevation.
(2) Altitude preselector - Set to more than
1000 feet above field elevation.
(3) Pilot's altimeter barometric set knob -
Slowly increase pilot's altimeter setting.
(4) Altitude alerter annunciator and horn -
Verify that the altitude alert annunciator
on the pilot's altimeter illuminates and
the altitude alerter horn sounds when
the pilot's altimeter reading is
approximately 1000 feet from the value
set on the altitude select controller.
(5) Pilot's altimeter
-
Reset
to
field
elevation.
(6) Altitude preselector - Reset to field
elevation.
(7) Pilot's altimeter barometric set knob -
Slowly increase pilot's altimeter setting.
(8) Altitude alerter annunciator and horn -
Verify that the alti-
2-18
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