# SDR ASAA2023051443232

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 14, 2023
- Submitted: May 16, 2023
- Operation: Air carrier
- Aircraft: [N516AS](https://openairdocs.org/aircraft/N516AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 39044
- Aircraft time: 52,118 hours, 15,496 cycles
- System (JASC): [7532 · Compressor Bleed Valve](https://openairdocs.org/jasc/7532)
- Part: Bleed Valve
- Part number: 32145526
- Part serial: 9999
- Condition: Faulty
- Location: #1 Engine
- Part time: 54,927 hours, 16,029 cycles
- Stage of operation: IN
- 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/ASAA2023051443232

## Discrepancy

L/H DUCT PRESSURE SHOWING 18 PSI WITH ALL BLEEDS CLOSED, APU OFF AND ISOLATION VALVE CLOSED, BLEED VALVE SWITCH WILL NOT SHUT OFF AIR ON #1 ENG. GROUNDED - YES. REMOVED #1 ENG PRSOV AND REPLACED WITH NEW PRSOV REF B737-800 AMM 36-11-04.RAN #1 ENG, TURNED APU AND #1 ENG BLEED OFF, 0 PSIG ON GUAGE SHOWN. OPS CHECK GOOD.

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