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Page Title:
Periodic Maintenance Service and Inspection Chart |
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|  Procedure
Item
References
No.
Normal condition or result
Item
a. None.
This technical manual must be
PUBLICATIONS: See that pertinent
2
complete and in usable con-
publications are available.
dition without missing pages.
b. DA Pam 310-4 for require-
b. All Changes pertinent to the
ments.
equipment are on hand.
DA Pam 310-4.
ALL URGENT MWO's have been
MODIFICATION WORK ORDERS:
3
applied to the euipment. All
Check DA Pam 310-4 to deter-
ROUTINE MWO's have been
mine if new applicable MWO's
scheduled.
have been published.
The fuse in use and the spare
4
FUSES: Check for proper fuses.
should be of the indicated value.
The fuses are located on the
receiver-transmitter front
panel.
Applicable aircraft technical
All bolts, nuts, and washers are
MOUNTING: Inspect seating and
5
manual.
present and properly tightened.
stability of mounting. Check for
Mounting shows no evidence of
loose or missing hardware.
weakness or deformity. All
Check for proper safety wiring.
components safety wired in ac-
cordance with TM 11-530.
Applicable aircraft technical
Plugs, sockets, connectors, and
CONNECTIONS: Check the antenna
6
manual.
terminals are clean, intact,
cable, headset-microphone, and
and not loose-fitting. Headset-
intercomponent cabling and
microphone is properly con-
wiring connections.
nected to the aircraft audio cir-
cuits.
Applicable aircraft technical
Action is positive without backlash
KNOBS, DIALS, AND SWITCHES:
7
manual.
binding, or scraping.
Check for proper mechanical
action by setting each control to
Note: Knobs that require frequent tight
ening should have setscrews replaced.
each of its possible settings.
8
OPERATIONAL PRESET; AIR-
All controls must be set properly.
technical manual.
CRAFT: Connect auxiliary
power and set the controls on the
pilot's instrument panel:
Master power on-off switch: Off.
AN/APX-44 circuit breaker: Off.
None.
9
All controls must be set properly.
OPERATIONAL PRESET; CON-
TROL UNIT: Set the controls on
the control unit:
OFF.
Master control:
OFF.
AUDIO switch:
OFF.
I/P switch:
OFF.
MODE 2 switch:
MODE 3 switch:
OFF.
MODE 1 code
control: 00.
To read.
MODE 3 code
control: 00.
To read.
Function control:
NORMAL.
10
OPERATIONAL PRESET; TRANS- None observable.
TM 11-6625-509-12.
PONDER TEST SET: Prepare the
transponder test set for operation
as directed in TM 11-6625-509-12.
The method of setup will depend
on surrounding conditions.
11
STARTING; TRANSPONDER SET: Pilot light illuminated.
Place the aircraft master power
on-off control and the AN/APX-
44 circuit breaker to their o n
positions. Place the control unit
master control in the STBY po-
sition. Allow equipment to warm
18
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