TM 55-1905-222-14
Troubleshooting
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
NAVIGATIONAL AIDS
1. LIGHT(S) DO NOT LIGHT UP
Step 1.
Check to see if main switch is off on the control and distribution panel.
Turn switch on.
Step 2.
Check to see if bulb is defective.
Replace bulb.
Step 3.
Check for blown fuses
Notify unit maintenance.
Step 4.
Check to see if wiring/fixtures/switches are faulty
Notify unit maintenance.
2. HORN WILL NOT SOUND.
Step 1.
Check to see if ice has formed in the horn
Remove ice.
Step 2.
Check to see If wiring/horn/switch is faulty
Notify unit maintenance.
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