# SDR HEEA954613

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 23, 1995
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N4391S](https://openairdocs.org/aircraft/N4391S), registered now
- Make and model: Bolkms BO105S
- Aircraft serial: S787
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Shaft Seal
- Part number: 4639312025
- Condition: Leaking
- Location: Transmission
- Stage of operation: CR
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HEEA954613

## Discrepancy

IN CRUISE FLIGHT, DEVELOPED LEAK FROM BOTTOM OF TRANSMISSION. REPLACED SEAL DUE TO SLIP RING RETAINER LEAKING.

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