# SDR 95ZZZX1373

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 2, 1995
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N911LW
- Make and model: Bell 222U
- Registry model: [Bell 222U](https://openairdocs.org/model/bell-222u) (OpenAirDocs)
- Aircraft serial: 47520
- System (JASC): [6310 · Engine/Transmission Coupling](https://openairdocs.org/jasc/6310)
- Part: Coupling
- Part number: 222044672101
- Condition: Corroded
- Location: Main Drive
- Part time: 4,273 hours
- 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/95ZZZX1373

## Discrepancy

EXCESSIVE CORROSION PITTING IN SPLINES OF COUPLING AFTER 63.7 HOURS.  IMPROPER HEAT TREATMENT COULD HAVE BEEN A FACTOR IN THE MALFUNCTION.  OPER CONTROL NR OHI 2011.

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