TM 55-1520-240-T
18-1.11
PILOT/COPILOT HORIZONTAL SITUATION INDICATOR (HSI) DISCREPANCIES
18-1.11
FAULT ISOLATION PROCEDURE
INITIAL SETUP
References:
Applicable Configurations:
TM 11-1520-240-23
All
TM 11-5826-308-12
TM 55-1520-240-23
Tools:
Electrical Repairer's Tool Kit,
Equipment Condition:
NSN 5180-00-323-491 5
TM 55-1520-240-23:
Multimeter, AN/USM-223,
Battery Connected
NSN 6625-00-999-7465
Electrical Power On
Hydraulic Power Off
Materials:
None
Personnel Required:
Aircraft Electrician
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