# SDR SWAA001831

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 23, 2000
- Submitted: September 29, 2000
- Operation: Air carrier
- Aircraft: N614SW
- Make and model: Boeing 737-3H4
- Registry model: [Boeing 737-3H4](https://openairdocs.org/model/boeing-737-3h4) (OpenAirDocs)
- Aircraft serial: 28033
- Aircraft time: 17,248 hours, 15,289 cycles
- System (JASC): [4950 · APU Bleed Air System](https://openairdocs.org/jasc/4950)
- Part: Bleed Valve
- Part number: 1094868
- Condition: Erratic
- Location: Apu
- 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/SWAA001831

## Discrepancy

AIR TURNBACK, DURING CLIMBOUT LT DUCT PRESSURE WENT FROM 51 PSI TO 5 PSI & IN CRUISE IDLE LEFT DUCT PRESSURE WENT FROM 26 PSI TO 3 - 5 PSI.  REMOVED AND REPLACED APU BLEED AIR VALVE AND APU BLEED AIR PRESS REG (P/N 108032-8) PER MM.

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