# SDR USAA2011101800001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 16, 2011
- Submitted: October 18, 2011
- Operation: Air carrier
- Aircraft: [N206UW](https://openairdocs.org/aircraft/N206UW), registered now
- Make and model: Boeing 757-2B7
- Registry model: [Boeing 757-2B7](https://openairdocs.org/model/boeing-757-2b7) (OpenAirDocs)
- Aircraft serial: 27808
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Coupling
- Condition: Out Of Position
- Location: Ac Pack
- Stage of operation: CR
- How discovered: O
- Nature of condition: G
- Precautionary procedure: B, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA2011101800001

## Discrepancy

CLT  FLT 806  EN ROUTE CUN TO PHL.  THE FLIGHT DEPARTED CUN WITH THE LEFT AIR CONDITIONING PACK ON MEL.  DURING CRUISE, THE CREW STATES: "COULD NOT HOLD PRESSURIZATION IN AUTO, WENT TO MANUAL.  ALSO COULD NOT CONTROL UNTIL FL 7000.  L&R DUCT PRESSURE 40-50 PSI."  THE FLIGHT DECLARED AN EMERGENCY, DESCENDED QUICKLY TO FL 170, AND THEN DIVERTED INTO CLT.  MAINTENANCE FOUND DUCT COUPLING OFF RT PACK.  REPLACED COUPLING & CLAMPS.  LEAK CHECKED, NO LEAKS NOTED.  ACCOMPLISHED EXCESSIVE CABIN PRESSURE LEAK TEST.  CHECK'S GOOD.  OK FOR SERVICE.

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