# SDR 8HBR20170508003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 6, 2017
- Submitted: May 8, 2017
- Operation: General aviation
- Filed by: [Hillsboro Aero Academy LLC, repair station 8HBR698C](https://openairdocs.org/faa-repair-station/8HBR698C/hillsboro-aero-academy-llc.md) (OpenAirDocs)
- Aircraft: [N7087J](https://openairdocs.org/aircraft/N7087J), registered now
- Make and model: Robsin R22BETAII
- Aircraft serial: 2873
- Aircraft time: 6,930 hours
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Seal
- Part number: A663
- Condition: Leaking
- Location: M/R Gearbox
- Stage of operation: IN
- How discovered: V
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/8HBR20170508003

## Discrepancy

MAIN ROTOR GEARBOX INPUT SEAL LEAKING WITH 181.3 TSN.  PREVIOUS INPUT SEAL REPLACED FOR LEAK WITH 391.3 TSN.  PRIOR TO THIS INPUT SEAL REPLACED FOR LEAK WITH 46.6 TSN.

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