# SDR 2004UALA00731

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 7, 2004
- Submitted: August 31, 2004
- Operation: Air carrier
- Aircraft: N528UA
- Make and model: Boeing 757222
- Aircraft serial: 25018
- Aircraft time: 45,228 hours, 16,729 cycles
- Engine: Pwa PW2037
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Relay
- Part number: BACR13CF2AB
- Condition: Failed
- Location: Rt A/C Pack
- Stage of operation: CR
- How discovered: O
- Nature of condition: G
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2004UALA00731

## Discrepancy

CABIN TEMPERATURE STUCK IN FULL HOT. RT PACK TEMP VLV WOULDN'T DRIVE COLD--RPL K56, REF WDM21-51-23 . VALVE WILL NOW DRIVE COLD.

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