# SDR CNMA20080011

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 2, 2008
- Submitted: December 10, 2008
- Operation: Air carrier
- Aircraft: N549AX
- Make and model: Boeing 757-200 SERIES
- Registry model: [Boeing 757-200 SERIES](https://openairdocs.org/model/boeing-757-200-series) (OpenAirDocs)
- Aircraft serial: 24528
- Aircraft time: 53,345 hours, 18,102 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Circuit Card
- Condition: Faulty
- Location: Bleed Air Sys
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CNMA20080011

## Discrepancy

EICAS L ENG BLEED OFF.  T/S PER FIM 36-10.  VISUALLY CHECK PRSOV, NO LEAK NOTED.  RESEATED ECS BLEED LT CONFIG CARD.  RAN ENGINE.  OPS CHECK NORMAL.  LT PACK OPERATION NORMAL.  REPLACED LT ENG BLEED CARD IAW MM REF 36-10 GRND OPS OF BLEED SYSTEM GOOD AT THIS TIME.  R&R LT ENG REVERSE FLOW CONTROL VALVE IAW MM REF 36-11, GROUND OPS CK GOOD.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.