# SDR AALA20110326DFW01

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 26, 2011
- Submitted: March 30, 2011
- Operation: Air carrier
- Aircraft: [N9629H](https://openairdocs.org/aircraft/N9629H), registered now
- Make and model: Doug DC-9-83
- Registry model: [Doug DC-9-83](https://openairdocs.org/model/douglas-dc-9-83) (OpenAirDocs)
- Aircraft serial: 53599
- Aircraft time: 36,170 hours, 16,862 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Duct
- Condition: Damaged
- Location: Cabin Pressure
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20110326DFW01

## Discrepancy

DFW - CREW REPORTED LEFT PACK WOULD NOT MAINTAIN CABIN PRESSURIZATION AND RIGHT PACK INOPERATIVE PER MEL. FLIGHT RETURNED DFW LANDED WITHOUT INCIDENT.  AIRCRAFT REMOVED FROM SERVICE.  REPLACED Y-DUCT THAT HAD A HOLE IN IT.  SYSTEM GROUND CHECK NORMAL OPERATION.

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