Service difficulty report · Amplifier · Doug DC863F

Difficulty date
June 9, 2004
Submitted
June 24, 2004
Operation
Air carrier
Aircraft
N906R
Make and model
Doug DC863F
Aircraft serial
46087
Aircraft time
77,323 hours, 25,477 cycles
Engine
Pwa JT3D3
Part
Amplifier
Part number
390D
Part serial
376
Condition
Malfunctioned
Location
Nr 2 Fire Loop
Stage of operation
TX
How discovered
O
Nature of condition
N
Precautionary procedure
D, E

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

What was found

DURING TAXI, NR 2 ENGINE FIRE WARNING INTERMITENTLY ILLUMINATED FIRE WARNING TEST INOPERATIVE, SHUT DOWN ENGINE; RETURNED TO RAMP. NO FIRE NOTED. CHECK FIRE WARNING SYSTEM AT RUNUP CONDITION. CHECK WIRING FOR CONDITION, ELEMENTS FOR CONDITION AT NR 2 ENGINE FIRE WARNING SYSTEM IAW MM 26-10-1. REMOVED AND REPLACED NR 2 FIRE DETECTOR AMPLIFIER IAW MM 26-10-2; FOUND SYSTEM NORMAL. CHECKED NR 2 ENGINE AT BLAST FENCE FOR FIRE WARNING SYSTEM IAW MM 71-0 AND MM 26-10-0, FOUND NORMAL.

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