# SDR WRNA200600035

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 14, 2006
- Submitted: October 26, 2006
- Operation: Air carrier
- Aircraft: [N526UP](https://openairdocs.org/aircraft/N526UP), registered now
- Make and model: Boeing 747 212B
- Registry model: [Boeing 747 212B](https://openairdocs.org/model/boeing-747-212b) (OpenAirDocs)
- 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)](https://openairdocs.org/jasc/7200)
- 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
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/WRNA200600035

## Discrepancy

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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