Service difficulty report · Dimmer · Cessna 402C

Difficulty date
July 7, 2018
Submitted
August 23, 2018
Operation
Air carrier
Aircraft
N7037E
Make and model
Cessna 402C
Aircraft serial
C4020471
Aircraft time
35,532 hours
Part
Dimmer
Part number
51184241
Condition
Failed
Location
Instrument Light
Stage of operation
CL
How discovered
O
Nature of condition
B
Precautionary procedure
A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DURING CLIMB OUT, THE CAPTAIN'S FLIGHT INSTRUMENT ILLUMINATION FAILED. SHORTLY AFTER, SMELLED A BURNING ELECTRICAL AND LIGHT SMOKE. MAINTENANCE INSPECTED AND FOUND THE INSTRUMENT LIGHT DIMMER ASSEMBLY AT FAULT. REPLACED THE DIMMER AND TRANSISTOR Q4 WITH NO FURTHER DEFECTS NOTED.

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