# SDR QMLA2026041720027

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 17, 2026
- Submitted: April 17, 2026
- Operation: Air carrier
- Aircraft: [N712SL](https://openairdocs.org/aircraft/N712SL), registered now
- Make and model: Bell 429
- Registry model: [Bell 429](https://openairdocs.org/model/bell-helicopter-textron-canada-429) (OpenAirDocs)
- Aircraft serial: 57374
- Aircraft time: 2,545 hours, 8,223 cycles
- System (JASC): [6220 · Main Rotor Head](https://openairdocs.org/jasc/6220)
- Part: Bearing
- Part number: 429310002103
- Part serial: CB2331
- Condition: Worn
- Location: Main Rotor Head
- Part time: 2,545 hours
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QMLA2026041720027

## Discrepancy

REQUESTED BY THE RAM TO INSPECT THE MRH SHEAR BEARINGS TO VERIFY TORQUE ON ATTACHING HARDWARE. FOUND THE BLUE BLADE SHEAR BEARING UPPER BOLT TO FAIL TORQUE CHECK, WITH THE BOLT ONLY BEING FINGER TIGHT. AFTER REMOVAL OF THE BOLT
FOUND A SLIGHT STEP ON THE BOLT AND WEAR ON THE BOLT HOLE OF THE SHEAR BEARING.

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