AIRCRAFT
DA 42 NG AMM
Lights
Doc # 7.02.15
Rev. 4
33-40-00
Page 101
15 Mar 2018
Trouble-Shooting
1. General
This Section lists some defects you could have with the exterior lighting system. If you have the trouble
shown in the Trouble column read across to the Possible Cause column. Then do the repair given in
the Repair column.
Trouble
Possible Cause
Repair
Both position lights do not
operate.
Circuit breaker not set or
defective.
Defective position light switch.
Defective wiring.
Reset/replace circuit breaker.
Replace the switch.
Do a continuity test of the
wiring. Repair/replace
defective wiring. Refer to
Chapter 92 for the wiring
diagrams.
One position light does not
operate.
Defective filament.
Defective wiring.
Replace the filament.
Do a continuity test of the
wiring. Repair/replace
defective wiring. Refer to
Chapter 92 for the wiring
diagrams.
Both strobe lights do not
operate.
Circuit breaker not set or
defective.
Defective strobe light switch.
Defective wiring.
Reset/replace circuit breaker.
Replace the switch.
Do a continuity test of the
wiring. Repair/replace
defective wiring. Refer to
Chapter 92 for the wiring
diagrams.
Summary of Contents for DA 42 NG
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