# SDR AALA200802237

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 28, 2008
- Submitted: October 9, 2008
- Operation: Air carrier
- Aircraft: [N593AA](https://openairdocs.org/aircraft/N593AA), 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: 53256
- Aircraft time: 54,697 cycles
- System (JASC): [2134 · Cabin Pressure Sensor](https://openairdocs.org/jasc/2134)
- Part: Pressure Switch
- Condition: Inoperative
- Location: A/C Bay
- 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/AALA200802237

## Discrepancy

LAX INFLIGHT T1960/28AUG.  BOTH AIR CON PACKS WENT TO ZERO FLOW ON CLIMB.  ACFT WOULD NOT PRESSURIZE.  RETURNED TO LAX AND LANDED WITHOUT INCIDENT.  REPLACED BOTH LT AND RT HAND SINGLE ENGINE SECON SEGMENT CLIMB PRESSURE SWITCHES.  SYSTEM GROUND CHECKED NORMAL OPS.

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