# SDR AMTA200700463

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 27, 2007
- Submitted: October 9, 2007
- Operation: Air carrier
- Aircraft: [N520AT](https://openairdocs.org/aircraft/N520AT), registered now
- Make and model: Boeing 757-23N
- Registry model: [Boeing 757-23N](https://openairdocs.org/model/boeing-757-23n) (OpenAirDocs)
- Aircraft serial: 27976
- Engine: Rroyce RB211535E4
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Shutoff Valve
- Part number: 32143069
- Part serial: 1493A
- Condition: Unserviceable
- Location: Nr 1
- Stage of operation: TX
- 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/AMTA200700463

## Discrepancy

EICAS MSG L ENG BLD OFF DISPLAYED.  LT ENG BLD AIR OFF LGT ILLUM WITH ENG RUNNING AND SW ON.  DUCT NORM.  JUMPERED RFCC NO HELP, REMOVED AND REPLACED NR 1 ENG PRESSUE REGULATING SHUTOFF VALVE IAW MM 36-11-09-002-008, OPS CHECKS NORMAL.  (K)

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