TM 55-1510-222-MTF
P R O C E D U R E
T R O U B L E S H O O T I N G
R E F E R E N C E
G. AVIONICS FLIGHT CHECKS (CONT)
(2) ICS switch - NORM.
(3) Transmitter
selector
switches on pilot’s and co-
pilot’s audio control pane1
- INTPH. This will allow
the pilot to talk to the co-
pilot by pressing a micro-
phone switch and speak-
ing into microphone or
visa-versa from copilot’s
position.
) Microphone switches -
Actuate one at a time and
speak
into
appropriate
microphone. Side tone
s h o u l d b e h e a r d
and
speech should be heard in
other headset,
) ICS switch - HOT MIC.
Crew should be able to
converse on
intercom
without depressing micro-
phone switches.
(6) Volume control - Check
for function.
b. Receiver and transmitter fa-
cilities - Check as follows:
(1) Receiver volume controls
- Turn all fully counter-
clockwise.
(2) Receiver switches (audio
control panel) - Push on
one at a time and turn
clockwise to increase vol-
ume and increase volume
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