# SDR USAABB01138

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 30, 2001
- Submitted: January 17, 2002
- Operation: Air carrier
- Aircraft: N626AU
- Make and model: Boeing 757-2B7
- Registry model: [Boeing 757-2B7](https://openairdocs.org/model/boeing-757-2b7) (OpenAirDocs)
- Aircraft serial: 27303
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Valve
- Part number: 32896265
- Condition: Failed
- Location: Lt Engine
- Stage of operation: CR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAABB01138

## Discrepancy

PIT - FLT 1570 - IN CRUISE, CREW NOTED THAT THE LEFT DUCT PRESSURE WAS LOW (10 PSI).  CABIN CREW ALSO NOTED A SLIGHT BURNING SMELL.  MAINTENANCE REPLACED THE LEFT FAN AIR MODULATING VALVE.  (M)

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