# SDR ASAA1159664

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 17, 2011
- Submitted: May 24, 2011
- Operation: Air carrier
- Aircraft: [N565AS](https://openairdocs.org/aircraft/N565AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35181
- Aircraft time: 17,064 hours, 5,303 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Regulator
- Part number: 1074926
- Part serial: 10121
- Condition: Failed
- Location: Bleed Air Sys
- Part time: 17,064 hours, 5,303 cycles
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA1159664

## Discrepancy

NR 2 ENG BLEED WON'T SHUTOFF WHEN SWITCH IS OFF.  PERFORMED TROUBLESHOOTING OF NR 2 ENGINE BLEED SYSTEM FOUND NR 2 ENGINE BLEED AIR REGULATOR INOP.  REPLACED BLEED AIR REGULATOR IAW B737MM 36 11 03 PERFORMED LEAK AND OPERATIONAL CHECK OF NR 1 AND NR 2 ENGINE BLEED SYSTEM OPS CHECK GOOD, NO LEAKS NOTED IAW B737 MM 36 11 03 AND B737 MM 36 11 00.

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