# SDR 95ZZZX1690

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 22, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N911RX](https://openairdocs.org/aircraft/N911RX), registered now
- Make and model: Agusta A109K2
- Registry model: [Agusta A109K2](https://openairdocs.org/model/agusta-s-p-a-a109k2) (OpenAirDocs)
- Aircraft serial: 10017
- System (JASC): [6420 · Tail Rotor Head](https://openairdocs.org/jasc/6420)
- Part: Trunnion
- Part number: 109013105111
- Condition: Galled
- Location: T/R Hub
- Part time: 186 hours
- Component: 109813102115
- Stage of operation: IN
- Nature of condition: M
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/95ZZZX1690

## Discrepancy

ON PRE-FLIGHT, A BLUING (HEATED) AREA WAS FOUND ON THE T/R HUB AT THE BUSHING END, ONE SIDE.  A TEAR DOWN REVEALED THE TRUNNION SLEEVE AND BUSHING HAD SEVERE GALLING AND HEAT DAMAGE.  BOTH TRUNNION AND BUSHINGS WERE REPLACED.  SUBMITTER SUGGESTS RE-DESIGN WITH DIFFERENT MATERIALS AND TOLERANCES MIGHT HELP EXTEND THE LIFE OF THESE PARTS.

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