# SDR DELA20040002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 19, 2004
- Submitted: September 10, 2004
- Operation: Air carrier
- Aircraft: N273MG
- Make and model: Lear 55LEAR
- Aircraft serial: 119
- Engine: Garrtt TFE7313A
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Motor
- Part number: 66004238
- Part serial: 1675
- Condition: Stuck
- Location: Temp Valve
- Stage of operation: DE
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DELA20040002

## Discrepancy

DURING DESCENT, THE CABIN TEMPERATURE CLIMBED TO AN UNCOMFORTABLE LEVEL. USE OF MANUAL CABIN TEMPERATURE MODE DID NOT CORRECT THE PROBLEM. T/S REVEALED  THAT THE CABIN TEMPERATURE CONTROL VALVE TORQUE MOTOR WAS STUCK. REMOVAL AND REPLACEMENT OF THE TORQUE MOTOR WITH AN OVERHAULED UNIT CORRECTED THE PROBLEM.

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