# SDR UALA2011072503798

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 25, 2011
- Submitted: August 3, 2011
- Operation: Air carrier
- Aircraft: [N773UA](https://openairdocs.org/aircraft/N773UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26929
- Aircraft time: 64,631 hours, 12,582 cycles
- Engine: Pwa PW4077
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Check Valve
- Part number: S210W1101012
- Part serial: 220
- Condition: Failed
- Location: Right
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2011072503798

## Discrepancy

RIGHT IP CHECK VALVE FAILED FLAPPER REDIAL CLEARANCE PER "A" CHECK PAPERWORK.  REPLACED IP CHECK VALVE.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.