Service difficulty report · Fire Detector · Doug DC873F

Difficulty date
November 26, 2009
Submitted
November 30, 2009
Operation
Air carrier
Aircraft
N804DH
Make and model
Doug DC873F
Aircraft serial
46124
Aircraft time
87,834 hours, 31,932 cycles
Engine
Ge CFM562C1
Engine time
41,971 hours, 14,787 cycles
Part
Fire Detector
Part number
472448
Part serial
5013
Condition
False Activation
Location
Nr 2 Nacelle
Part time
3,540 hours, 1,426 cycles
Stage of operation
CR
How discovered
O
Nature of condition
N
Precautionary procedure
E

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

What was found

NR 2 ENG FIRE WARNING LIGHT AND BELL. COMPLETED ENG FIRE PHASE ONE ITEMS COMPLETED ENG FIRE CHECK LIST FIRE LIGHT OUT. INSPECTED ENG NR 2 INLET AND EXHAUST INCLUDING FAN AND CORE SECTION NO DAMAGE OR EVIDENCE OF FIRE NOTED. T/S IAW MMS 26-10-01 AND W/D 26-01-01 SHEET 1OF 3 AND SHEET 3 OF 3. FOUND LT FAN DETECTOR "A" LOOP D1-7001 HAS LOW RESISTENCE FROM THE CTR CONDUCTOR TO GROUND. R & R LT FAN "A" AND "B" LOOP IAW MMS 26-10-01. OPS CK OK.

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