# SDR ASAA0956251

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 22, 2009
- Submitted: July 27, 2009
- Operation: Air carrier
- Aircraft: [N560AS](https://openairdocs.org/aircraft/N560AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35179
- Aircraft time: 11,298 hours, 3,584 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Regulator
- Part number: 1074847
- Part serial: 7611
- Condition: Failed
- Location: Nr 1 Engine
- Part time: 15,579 hours, 6,486 cycles
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA0956251

## Discrepancy

NUMBER 1 ENGINE HIGH STAGE REGULATOR FAILED HEALTH CHECK.  REMOVED AND REPLACED NR 1 ENGINE HIGH STAGE REGULATOR PER MM 36 11 02 000 801 AND MM 36 11 02 400 801.  ACCOMPLISHED NR 1 ENGINE HIGH STAGE REGULATOR INSTALLATION TEST PER MM 36 11 02 400 801 STEP F, TEST GOOD.

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