# SDR ASAA2013021993952

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 19, 2013
- Submitted: February 22, 2013
- Operation: Air carrier
- Aircraft: [N586AS](https://openairdocs.org/aircraft/N586AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35189
- Aircraft time: 20,645 hours, 6,497 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Shutoff Valve
- Part number: 32145526
- Part serial: 4479
- Condition: Failed
- Location: Nr 2 Engine
- Part time: 47,984 hours, 24,510 cycles
- Stage of operation: CL
- 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/ASAA2013021993952

## Discrepancy

AFTER DEPARTURE, DUCT PRESSURE INDICATED 55 PSI IN LT DUCT, 22PSI IN RT DUCT, GOT BETTER AS FLIGHT CONTINUED.  REF MM 36-11-00-700-804, FOUND PRSOV BAD.   REPLACED PRSOV REF MM 36-11-04-400-801.  LEAK & OPS CHECKED GOOD.  ACCOMPLISHED ENGINE BLEED AIR CROSSOVER OPS TEST RUNNING BOTH ENGINES & OPS TEST.  TESTED GOOD REF AMM 36-11-00-710-801.

---
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.