# SDR UALA2010101503822

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 14, 2010
- Submitted: November 5, 2010
- Operation: Air carrier
- Aircraft: [N228UA](https://openairdocs.org/aircraft/N228UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30556
- Aircraft time: 36,642 hours, 4,475 cycles
- Engine: Pwa PW4090
- System (JASC): [7921 · Engine Oil Cooler](https://openairdocs.org/jasc/7921)
- Part: O-Ring
- Condition: Leaking
- Location: Fuel Oil Cooler
- Stage of operation: IN
- How discovered: V
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2010101503822

## Discrepancy

WHILE PERFORMING LEAK CHECK OF THE FUEL OIL COOLER, FOUND OUTLET MANIFOLD ASSEMBLY (LOCATED ON THE TOP OF THE COOLER) AND THE FUEL-OIL COOLER BYPASS VALVE (LOCATED ON THE BOTTOM OF THE COOLER) LEAKING OIL.  RPL'D SEAL PLATE ON FUEL OIL BYPASS VLV. REPLACED O-RING ON OUTLET MANIFOLD, RUN CKS OK.  RESERVICED ENG OIL FULL.

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