# SDR X2RA2020061500001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 5, 2020
- Submitted: June 15, 2020
- Operation: Air carrier
- Aircraft: [N138TX](https://openairdocs.org/aircraft/N138TX), registered now
- Make and model: Hughes 369D
- Aircraft serial: 1290646D
- System (JASC): [6710 · Main Rotor Control](https://openairdocs.org/jasc/6710)
- Part: Bearing
- Condition: Seized
- Location: Mixer Assy
- Part time: 11 hours
- Component: Mixer
- Component part number: 369A76131
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/X2RA2020061500001

## Discrepancy

PILOT NOTICED THE COLLECTIVE MOTION WAS RATCHETY.  INSPECTION FOUND THAT THE BEARINGS, SELF-ALIGNING, WERE SEIZED UP SOLID.  REPLACEMENT OF THE LINK ASSY CURED THE ISSUE.  THE LINK HAD BEEN INSTALLED NEW, 3 DAYS BEFORE WITH 11.4 HOURS TSN AT REMOVAL.

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