# SDR 98ZZZX179

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 28, 1997
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N7730](https://openairdocs.org/aircraft/N7730), registered now
- Make and model: Bell 47G-2
- Registry model: [Bell 47G-2](https://openairdocs.org/model/bell-47g-2) (OpenAirDocs)
- Aircraft serial: K821
- System (JASC): [6322 · Rotorcraft Cooling Fan System](https://openairdocs.org/jasc/6322)
- Part: Sleeve
- Part number: 476205381C
- Condition: Cracked
- Location: Fan 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/98ZZZX179

## Discrepancy

INSPECTION FOUND FAN DRIVE SLEEVE WITH LARGE THRU-CRACKING IN FLANGE AREA.

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