# SDR UALA2010081602999

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 16, 2010
- Submitted: August 23, 2010
- Operation: Air carrier
- Aircraft: [N672UA](https://openairdocs.org/aircraft/N672UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 30027
- Aircraft time: 38,975 hours, 10,270 cycles
- Engine: Pwa PW4060
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Valve
- Part number: 79027013
- Part serial: 404
- Condition: Faulted
- Location: Nr 2
- Stage of operation: CR
- 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/UALA2010081602999

## Discrepancy

LT & RT DUCT PRESSURE SPLIT DURING CRUISE, WITH ENGS RUNNING, LT & RT ISOL VLVS CLSD & BLEED SW ON.  LT & RT PSI ARE.  DURING TROUBLESHOOTING FOUND EVIDENCE OF HEAT DAMAGE ON CYLINDER SECTION OF HIGH PRESSURE BLEED VALVE.  REPLACED VALVE AND RAN ENG, CHECKS OK.

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