TM 1-1510-223-CL
P-7
AUTOMATIC FLIGHT CONTROL SYSTEM
1.
Altitude alerter – Check as follows:
NOTE
Pause a few seconds between each step to
allow time for proper indications.
a. Altitude preselector – Set to more than
1000 feet above altitude set on the pilot’s
altimeter. Pilots’s altimeter altitude alert
annunciator should be extinguished.
b. Pilot’s altimeter barometric knob – Slowly
increase pilot’s altimeter setting.
c. Altitude alerter annunciator and horn –
Verify that altitude alerter annunciator on
pilot’s altimeter illuminates and altitude al-
erter horn sounds when pilot’s altimeter
reading is approximately 1000 feet from
value set on altitude select controller.
d. Pilot’s altimeter – Reset to field elevation.
e. Altitude preselector – Reset to field eleva-
tion.
f.
Pilot’s altimeter barometric set knob –
Slowly increase pilot’s altimeter setting.
g. Altitude alerter annunciator and horn –
Verify that the altitude alerter annunciator
on pilot’s altimeter illuminates and altitude
horn sounds when altimeter reading is
approximately 250 feet from value set on
altitude alert controller.
h. Pilot’s altimeter – Reset to field elevation.
