SDR KCSA10026

Service difficulty report · Wire · Boeing 747212B

Difficulty date: June 19, 2010
Submitted: June 21, 2010
Operation: Air carrier
Aircraft: N703CK
Make and model: Boeing 747212B
Aircraft serial: 21939
Aircraft time: 94,680 hours, 18,252 cycles
System (JASC): 2697 · Fire Protection System Wiring
Part: Wire
Condition: Damaged
Location: Fire Warning
Stage of operation: DE
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 4 ENG SHUTDOWN DUE TO FIRE WARNING ON "A" LOOP. DURING DESCENT WITH HIGH STAGE LIGHT ON "A" LOOP WENT 8.2 ON SCALE AND GOT WARNING BELL. SHUTDOWN AT 0434, N1 30%, N2 24%, OIL PRESS 15 PSI, ALT 310, SMOOTH. REPAIRED WIRE, IAW B747 MM 20-10-13. NR 4 ENG "A" LOOP OPS CHECKS GOOD IAW B747 MM 26-11-00.

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