# SDR 20001019SH031

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 10, 2000
- Submitted: October 19, 2000
- Operation: General aviation
- Aircraft: [N911KW](https://openairdocs.org/aircraft/N911KW), registered now
- Make and model: Bell 212
- Registry model: [Bell 212](https://openairdocs.org/model/bell-212) (OpenAirDocs)
- Aircraft serial: 30592
- System (JASC): [6220 · Main Rotor Head](https://openairdocs.org/jasc/6220)
- Part: Bearing
- Part number: 204011110005
- Condition: Failed
- Location: M/R Hub
- Part time: 1,929 hours
- Component: M/R Hub
- Component part number: 20401210129
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/20001019SH031

## Discrepancy

DURING A POST-FLIGHT INSPECTION, DARK BLACK GREASE WAS FOUND ON THE M/R TRUNNION.  REMOVED AND DISASSEMBLED M/R TRUNNION.  ONE TRUNNION BEARING HAD TOTALLY FAILED.  INNER AND OUTER  RACES WERE BROKEN.  (X)

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