# SDR 99ZZZX1247

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 25, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N2611](https://openairdocs.org/aircraft/N2611), registered now
- Make and model: Bell 206L-1
- Registry model: [Bell 206L-1](https://openairdocs.org/model/bell-helicopter-textron-206l-1) (OpenAirDocs)
- Aircraft serial: 45417
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Retainer
- Part number: 204040129001
- Condition: Broken
- Location: M/R Gearbox
- Part time: 20,804 hours
- Component: 206040004101
- 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/99ZZZX1247

## Discrepancy

UPON TEAR-DOWN OF TRANSMISSION FOR INSPECTION, FOUND SCREEN ASSY FULL ON PLASTIC OR NYLON PIECES.  INSPECTED PLANETARY ASSY FOUND 3 EACH GEAR ASSYS WITH NO RETAINERS REMAINING, ONE EACH RETAINER WAS IN PLACE.  ONCE REMOVED, IT FELL APART. UPGRADE RETAINERS TO NEW P/N 214-040-515-001.

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