# SDR 2001UALA01021

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 12, 2001
- Submitted: July 10, 2001
- Operation: Air carrier
- Aircraft: N7293U
- Make and model: Boeing 727222
- Aircraft serial: 21571
- Aircraft time: 63,818 hours, 36,757 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Control Valve
- Part number: 39608831
- Condition: Failed
- Location: A/C Bay
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2001UALA01021

## Discrepancy

AT CRUISE LOST RIGHT PACK.  EMERGENCY DESCENT TO 24,000 FT.  *S/D*  FORWARD PACK VALVE FAILED.  REPLACED FORWARD PACK VALVE.  OPERATIONS CHECK NORMAL.

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