# SDR DL72L954738

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 19, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N509DA](https://openairdocs.org/aircraft/N509DA), registered now
- Make and model: Boeing 727232
- Aircraft serial: 21311
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Pack Valve
- Part number: 32167431
- Condition: Malfunctioned
- Location: Rt Pack
- Stage of operation: CL
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DL72L954738

## Discrepancy

A/C WOULD NOT MAINTAIN PRESSURIZATION WITH SINGLE PACK.  OPS CARGO HEAT VALVE CLOSED.  REPLACED RT FWD PACK VALVE. REPLACED EQUIPMENT COOLING.  SHUT OFF VALVE.  PRESSURIZED A/C.  CKS NORMAL.

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