# SDR 97ZZZX4007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 5, 1997
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N8CF
- Make and model: Piper PA-31T
- Registry model: [Piper PA-31T](https://openairdocs.org/model/piper-pa-31t) (OpenAirDocs)
- Aircraft serial: 8020062
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Key
- Part number: 424910
- Condition: Failed
- Location: Air Cond Drive
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/97ZZZX4007

## Discrepancy

PILOT REPORTED AIR CONDITIONER INOPERATIVE.  INSPECTION REVEALED THAT AIR CONDITIONER QUILL SHAFT DRIVE PULLEY WAS LOOSE ON QUILL SHAFT.  RESULTING HEAT BUILD-UP DEFORMED QUILL SHAFT, PULLEYS, AND ATTACH HARDWARE, AND DESTROYED DRIVE BELTS.  REPLACED QUILL SHAFT, BOTH BEARINGS, PULLEYS, BELTS, AND ASSOCIATED HARDWARE.  SYSTEM OPERATIONAL CHECKED NORMALLY.

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