# SDR AALA20110324TUL15

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 24, 2011
- Submitted: March 25, 2011
- Operation: Air carrier
- Aircraft: [N476AA](https://openairdocs.org/aircraft/N476AA), registered now
- Make and model: Doug DC-9-82
- Registry model: [Doug DC-9-82](https://openairdocs.org/model/mcdonnell-douglas-dc-9-82) (OpenAirDocs)
- Aircraft serial: 49651
- Aircraft time: 65,581 hours, 34,284 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Tube
- Condition: Dirty
- Location: Acm
- Stage of operation: CL
- 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/AALA20110324TUL15

## Discrepancy

BWI - CREW REPORTED AFTER TAKEOFF PRESSURIZATION FLOW LIGHT ILLUMINATED.  EMERGENCY DECLARED FLIGHT RETURNED BWI LANDED WITHOUT INCIDENT.  CLEANED BOTH PACK AIR CYCLE MACHINE DE-ICE TUBES.  PRESSURIZED AIRCRAFT AND NO FAULTS FOUND.  SYSTEM GROUND CHECK NORMAL OPERATION.

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