# SDR CA000719013

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 30, 2000
- Submitted: July 24, 2000
- Operation: General aviation
- Make and model: Bell 206B
- Registry model: [Bell 206B](https://openairdocs.org/model/bell-206b) (OpenAirDocs)
- Aircraft time: 12,091 hours
- Engine: Allsn 250C20
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Case
- Part number: 206040151015
- Condition: Cracked
- Location: Transmission
- Component: M/R Transmission, Bell, 206040002013
- Stage of operation: IN
- How discovered: V
- Nature of condition: K
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA000719013

## Discrepancy

(CAN) OIL WAS NOTED LEAKING FROM TRANSMISSION DURING GROUND RUN.  REMOVAL OF THE PAINT REVEALED A CRACK ON THE UPPER CASE STARTING FROM THE SPLIT LINE BETWEEN TWO MOUNTING STUDS AT THE 4:30 POSITION, VIEWED FROM THE TOP.  AIRCRAFT WAS GROUNDED, TRANSMISSION  REMOVED.

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