# SDR AALA202305306733

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 25, 2023
- Submitted: May 30, 2023
- Operation: Air carrier
- Aircraft: [N796AN](https://openairdocs.org/aircraft/N796AN), registered now
- Make and model: Boeing 777223
- Aircraft serial: 30796
- Aircraft time: 86,023 hours, 11,124 cycles
- System (JASC): [7500 · Engine Bleed Air System](https://openairdocs.org/jasc/7500)
- Part: Regulator Valve
- Part number: 32153025
- Condition: Faulty
- Location: Zone 400 - Nac/P
- Stage of operation: CL
- How discovered: V
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202305306733

## Discrepancy

AIRCRAFT WAS GROUNDED: ON CLIMBOUT FROM SEA, EICAS BLEED LOSS WING LEFT AND PACK LEFT MESSAGES. EMERGENCY DECLARED; FLIGHT RETURNED TO SEA LANDING SAFELY. **SUPPLEMENTAL REPORT FOR AALA202305266733: REPLACED LEFT PRESSURE REGULATING AND SHUTOFF VALVE (PRSOV) PER AMM 36-11-00. ACCOMPLISHED SATISFACTORY ENGINE AIR SUPPLY TEST, LEAK AND OPERATIONAL CHECKS.** (CLOSED)

---
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.