# SDR ASAA2016052116810

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 21, 2016
- Submitted: May 23, 2016
- Operation: Air carrier
- Aircraft: [N559AS](https://openairdocs.org/aircraft/N559AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35178
- Aircraft time: 35,826 hours, 10,679 cycles
- System (JASC): [7532 · Compressor Bleed Valve](https://openairdocs.org/jasc/7532)
- Part: Bleed Valve
- Part number: 1074926
- Part serial: 6804
- Condition: Failed
- Location: Nr 1 Engine
- Part time: 52,685 hours, 18,585 cycles
- Stage of operation: NR
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2016052116810

## Discrepancy

DURING SINGLE PACK CONFIDENCE CHECK, LT DUCT PRESSURE DID NOT DROP BELOW 10 PSI, IT MAINTAINED 15 PSI.  ACFT GROUNDED.  R & R BAR AND PRSOV IAW AMM 36-11-03 & 36-11-04 AND PERFORMED INSTALLATION TEST IAW AMM 36-11-03 & 36-11-04 AND INSTALLATION TEST & LEAK CHECK GOOD AND PERFORMED ENGINE BLEED AIR CROSS OVER OPS TEST IAW AMM 36-11-00-700-801 & 36-11-00-710-801 & OPS TEST GOOD.  NO FURTHER ACTION REQUIRED.  ALL WORK ACCOMPLISHED AND DOCUMENTED ON NON ROUTINE G680561.

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