indicating compass compensation procedures are the
same as the magnetic compass, except that when
compensating, the power supply to the compass must
be turned on.
Testing and replacement criteria. Do not
replace components of remote indicating compass
without first testing wiring for proper continuity (see
figure 4-24), and the indicator for correct operation.
Test indicator by using the following procedures:
ANASM339V1 tester, test indicator and transmitter for
proper operation. Refer to applicable tester technical
manual for operation and connection of tester, and
applicable wiring diagram for location of transmitter.
compass does not read within specified tolerances,
check applied voltage. If power supply is functioning
properly, troubleshoot system in accordance with
applicable TM 11 series maintenance manual.
transmitter when faulty.
Indicators. Electrical liquid indicating systems are used
for fuel quantity and anti-icing fluid quantity. A
transmitter in the liquid tanks transmits an electrical
signal to position the pointer of a gauge in the cockpit.
Refer to applicable aircraft maintenance manual for
testing and troubleshooting procedures.
Position Indicating Systems and Indicators.
Position indicating systems are used to indicate position
of landing gear and flaps. A cockpit indicator shows
relative position of landing gear and flaps. Refer to
applicable aircraft maintenance manual for testing and
Repair and Replacements. The following
instruments and instrument system components that can
be accomplished on the flight line.
Repair. Line repair is limited primarily to
Resoldering broken leads
Replacing tubing, hose, and
rigid or flexible tubing
Removal and replacement of
Figure 4-24. Remote Indicating Compass Wiring Diagram