# SDR CHIR11820183122

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 18, 2018
- Submitted: January 23, 2018
- Operation: Air carrier
- Aircraft: [N6675D](https://openairdocs.org/aircraft/N6675D), registered now
- Make and model: Boeing 1072
- Aircraft serial: 5
- Aircraft time: 66,190 hours
- System (JASC): [6220 · Main Rotor Head](https://openairdocs.org/jasc/6220)
- Part: Bearing
- Part number: A02RS2522
- Part serial: C1P0177
- Condition: Galled
- Location: Aft Rotor Head
- Part time: 2,490 hours
- 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/CHIR11820183122

## Discrepancy

AFT ROTOR HUB WAS REMOVED.  ON DISASSEMBLY IT WAS REVEALED THAT THE YELLOW LAG BEARING WAS GALLED.

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