SDR 96ZZZX4139

Service difficulty report · Power Lampholder · Doug DC931

Difficulty date
August 1, 1996
Submitted
March 26, 2000
Operation
General aviation
Filed by
ZZBR116L
Bruce Aerospace Inc
Make and model
Doug DC931
Part
Power Lampholder
Part number
BR9708001
Condition
Burn Damage
Location
Light System
Component
Bruce · BR9702931NW
Stage of operation
NR
Nature of condition
O
Precautionary procedure
K

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

What was found

STC NR ST00092LA. BURN DAMAGE INCLUDED THE LAMPHOLDER FACEPLATE AND THE PRINTED CIRCUIT BOARD. THE FACEPLATE WAS DAMAGED IN THE AREA BETWEEN BOTH CONTACTS AND EXTENDED TO ONE EDGE. THE CIRCUIT BOARD WAS BURNED THROUGH. THE HEAT GENERATION POINT APPEARS TO HAVE BEEN THE ELECTRICAL CONTACT BETWEEN THE LAMPHOLDER AND THE LAMP. SUSPECT CAUSE IS AN INTERMITTENT CONNECTION BETWEEN THE COMPONENTS. DAMAGE TO THE CIRCUIT BOARD MAY INDICATE A SECONDARY FAILURE.

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