# SDR ABXA2021219015

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 18, 2021
- Submitted: February 22, 2021
- Operation: Air carrier
- Aircraft: [N750AX](https://openairdocs.org/aircraft/N750AX), registered now
- Make and model: Boeing 767232
- Aircraft serial: 22227
- Aircraft time: 87,464 hours, 40,176 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Shutoff Valve
- Part number: 77328810
- Part serial: 860810
- Condition: Sticking
- Location: Lt Engine
- Part time: 1,016 hours
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ABXA2021219015

## Discrepancy

LEFT ENGINE BLEED OFF EICAS MESSAGE.  AIRCRAFT BACK TO BLOCK AND GROUNDED BY MAINTENANCE.  REMOVED AND REPLACED LEFT ENGINE PRSOV IAW AMM 36-11-09.  PERFORMED THE AIR SUPPLY BITE TEST IAW AMM 36-23-00.  PERFORMED ENGINE RUN IAW AMM 71-00-00.  NO DEFECTS FOUND, OPS CHECK GOOD.  AIRCRAFT RELEASED.

---
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.