# SDR UALA2012071203780

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 12, 2012
- Submitted: August 24, 2012
- Operation: Air carrier
- Aircraft: [N105UA](https://openairdocs.org/aircraft/N105UA), registered now
- Make and model: Boeing 747451
- Aircraft serial: 26473
- Aircraft time: 74,177 hours, 8,758 cycles
- Engine: Pwa PW4056
- System (JASC): [2613 · Overheat Detection](https://openairdocs.org/jasc/2613)
- Part: Overheat Loop
- Part number: 644501
- Part serial: 12749
- Condition: Failed
- Location: Nr 3 Nacelle
- Stage of operation: NR
- How discovered: 9
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012071203780

## Discrepancy

NR 3 ENGINE OVERHEAT LOOP 'A" FAULT.  REPLACED FIRE OVERHEAT DETECTOR TS684 PER AMM.

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