# SDR SWAA010094

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 12, 2001
- Submitted: January 18, 2001
- Operation: Air carrier
- Aircraft: N759GS
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 30544
- Aircraft time: 3,979 hours, 2,392 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Shutoff Valve
- Part number: 1074925
- Part serial: 6327
- Condition: Inoperative
- Location: Nr 1 Engine
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA010094

## Discrepancy

AIR TURNBACK, NO BLEED AIR FROM NR 1 ENGINE AFTER T/O.  REMOVED AND REPLACED PRSOV, LOW PRESSURE REGULATOR (P/N 3214552-5) AND PRSOV MUSCLE AIR LINE PER MM.  OPS AND LEAK CHECK GOOD.

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