# SDR HALA2008111600858

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 16, 2008
- Submitted: November 18, 2008
- Operation: Air carrier
- Aircraft: N598HA
- Make and model: Boeing 767332
- Aircraft serial: 23278
- Aircraft time: 65,313 hours, 30,493 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Bypass Valve
- Part number: 1589352
- Part serial: 5360
- Condition: Failed
- Location: Apu Oil Cooler
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HALA2008111600858

## Discrepancy

ETOPS SIGNIFICANT SYSTEM, APU HAD AUTO SHUTDOWN, FAULT LIGHT ILLUMINATED AND EICAS MSG APU FAULT DISPLAYED.  TROUBLESHOT PER FIM 49-11-00 FIG 110.  FOUND BAD OIL COOLER BYPASS VALVE.  REMOVED AND REPLACED VALVE PER AMM 49-27-10, OPS AND LEAK CKS GOOD.

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