Service difficulty report · Amplifier · Doug MD9030

Difficulty date
February 28, 2019
Submitted
March 4, 2019
Operation
Air carrier
Aircraft
N935DN
Make and model
Doug MD9030
Aircraft serial
53460
Aircraft time
46,946 hours, 29,507 cycles
Part
Amplifier
Condition
Defective
Location
Fire Warning
Stage of operation
UK
How discovered
O
Nature of condition
N
Precautionary procedure
A

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

What was found

SHIP 9235 - DIV - DUE TO L ENG FIRE DET FAULT EOAP MESSAGE ACCOMPANIED BY A B LOOP LIGHT ON THE OVERHEAD FIRE PANEL. SELECTED A LOOP AND LIGHT EXTINGUISHED. CORRECTIVE ACTION: VISUALLY INSPECTED ALL FIRE LOOPS AND ASSOCIATED CONNECTION AND WIRING. NO VISIBLE DEFECTS NOTED. REPLACED LT ENG. FIRE DETECTOR AMPLIFIER. PLACED LT ENGINE B LOOP ON MEL 26-11-01. CORRECTIVE ACTION : FOUND 18K OHMS ON PIN2 OF P1-8088. REPLACED WIRE ASSEMBLY 9U001B/R18. (LP# 5224076)

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