# SDR ASAA0852537

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 3, 2008
- Submitted: February 4, 2008
- Operation: Air carrier
- Aircraft: [N579AS](https://openairdocs.org/aircraft/N579AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35187
- Aircraft time: 3,656 hours, 1,122 cycles
- System (JASC): [7500 · Engine Bleed Air System](https://openairdocs.org/jasc/7500)
- Part: Regulator
- Part number: 1074926
- Condition: Faulty
- Location: Bleed Air
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA0852537

## Discrepancy

ON DEPARTURE BLEED AIR DUCT PRESSURE OSCILLATED BETWEEN 20 AND 40PSI.  LT NEEDLE APPEARED TO BE CHASING RT WITH NEVER MORE THAN 10 PSI SEP.  REPLACED NR 2 ENGINE BLEED AIR REGULATOR.  BLEED AIR SYSYTEM, OP CHECKS NORMAL.

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