# SDR AMTA200700486

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 9, 2007
- Submitted: October 23, 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: Controller
- Part number: S212N10145
- Part serial: 2454
- Condition: Malfunctioned
- Location: Lt Engine
- Stage of operation: CR
- 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/AMTA200700486

## Discrepancy

EICAS MSG L ENG BLEED OFF DISPLAYED.  LT ENGINE BLEED AIR OFF LGT ILLUM WITH ENG RUNNING ADN SW ON.  DUCT PRES ZERO.  T/S IAW FIM 36-10-00.  REMOVED AND REPLACED THE LT ENG REVERSE FLOW CONTROLLER IAW MM 36-11-18-4.  SYSTEM CHECKS OK. AC OK FOR SERVICE.  (K)

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