# SDR AALA20140614005

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 14, 2014
- Submitted: June 24, 2014
- Operation: Air carrier
- Aircraft: N955U
- 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: 49427
- Aircraft time: 73,251 hours, 39,358 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Switch
- Condition: Inoperative
- Location: Ac Bay
- Stage of operation: CL
- How discovered: O
- Nature of condition: B, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20140614005

## Discrepancy

CREW REPORTED DIRTY SOCK SMELL & SOON AFTER LOSS OF BOTH AIR CONDITIONING PACKS.  ANNUNCIATOR LIGHT PRESSURIZATION FLOW ALSO ILLUMINATED.  EMERGENCY DECLARED FLIGHT RETURNED & LANDED WITHOUT INCIDENT.  ACFT REMOVED FROM SERVICE.  REPLACED BOTH SINGLE SECOND SEGMENT CLIMB SWITCHES & BOTH COLESCER BAGS. SYS GROUND CHECK NORMAL OPERATION CLOSED.

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