SDR WRNA200600035

Service difficulty report · Engine · Boeing 747212B

Difficulty date: October 14, 2006
Submitted: October 26, 2006
Operation: Air carrier
Aircraft: N526UP
Make and model: Boeing 747212B
Aircraft serial: 21937
Aircraft time: 89,568 hours, 16,850 cycles
Engine: Pwa JT9D7Q
Engine time: 64,023 hours, 13,491 cycles
System (JASC): 7200 · Engine (Turbine/Turboprop)
Part: Engine
Condition: Unserviceable
Location: Nr 3
Part time: 64,023 hours, 13,491 cycles
Stage of operation: CL
How discovered: O
Nature of condition: R, E, J
Precautionary procedure: E

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

What was found

DURING CLIMB-OUT OF MIA AT APPROX 18,000 FEET, THERE WAS A LOUD BANG FROM NR 3 ENGINE WITH A SPIKE IN EGT TO 780C AND FLUCTUATING EPR. ENGINE WAS SHUT DOWN, 19,000 POUNDS OF FUEL WERE DUMPED AND AIRCRAFT RETURNED TO MIA AND MADE A SAFE LANDING. VISUAL INSPECTION REVEALED EXTENSIVE DAMAGE TO LPT. ENGINE REPLACED PER TWM B747-71-004 WORK CARD AND PERFORMED ENGINE RUN UP PER TWM B747-71-005A WORK CARD. AIRCRAFT RETURNED TO SERVICE.

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