Service difficulty report · Fire Loop · Doug DC873F

Difficulty date
October 7, 2000
Submitted
October 10, 2000
Operation
Air carrier
Aircraft
N805DH
Make and model
Doug DC873F
Aircraft serial
46125
Part
Fire Loop
Part number
898474
Condition
False Indication
Location
Nr 4 Engine
Stage of operation
CR
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

NR 4 ENG FIRE INDICATION, PERFORMED PHASE 1 ITEMS, SHUT NR 4 ENG DOWN, DISCHARGED BOTH FIRE BOTTLES. LIGHTS AND BELL CONTINUED FOR 5 MINUTES. FOUND CONNECTOR P1-8062 AND P1-7040 SHORTED. REPLACED BOTH CONNECTORS AND B CORE SENSING LOOP PER M/M 26-10-1. ALSO REPLACED BOTH ENG FIRE BOTTLES PER M/M 26-20-1. FIRE BOTTLE (P/N 899827) USED IN BOTH POSITIONS. S/N OFF RT O/B 92452DC, S/N ON 25236DH, S/N OFF RT I/B 9788CU, S/N ON 18146CY.

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