# SDR CA030204011

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 6, 2003
- Submitted: February 10, 2003
- Operation: Air carrier
- Make and model: Bell 206B
- Registry model: [Bell 206B](https://openairdocs.org/model/bell-206b) (OpenAirDocs)
- Aircraft time: 3,677 hours
- Engine: Allsn 250C20B
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Retainer
- Part number: 23009342
- Condition: Broken
- Location: Gearbox
- Stage of operation: IN
- How discovered: V
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA030204011

## Discrepancy

(CAN) DURING ENGINE GEARBOX OVERHAUL A 3 INCH PIECE OF BALANCED RATAINING RING FOUND LAYING INSIDE GEARBOX. THE REMAINING BALANCED RATAINING RING WORE A STEP IN RETAINING RING GROOVE OF THE HELICAL TORGUEMETER GEARSHAFT. ROLLS ROYCE HAS BEEN NOTIFIED AND PICTURES FORWARDED TO THEM.

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