# SDR 2021FA0000326

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 18, 2021
- Submitted: November 18, 2021
- Operation: General aviation
- Filed by: [Boeing Distribution, Inc, repair station XVLR346L](https://openairdocs.org/faa-repair-station/XVLR346L/boeing-distribution-inc.md) (OpenAirDocs)
- System (JASC): [3600 · Pneumatic System](https://openairdocs.org/jasc/3600)
- Part: Cup
- Part number: 01383020629
- Part serial: NA
- Condition: None
- Location: Nose Wheel Assy.
- Component: Nose Wheel, Meggitt, PHENOM
- Component part number: DAP0009902
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2021FA0000326

## Discrepancy

WHILE INSPECTING NOSE WHEEL. ASSY. P/N DAP00099-02 FOR A TIRE CHANGE, WE FOUND THE INBOARD WHEEL HALF BEARING CUP CRACKED. IT WAS NOTICEABLE VISUALLY BUT WENT AND PERFORM A MAGNETIC PARTICLE INSPECTION TO CONFIRM THE CRACK. IT'S RARE TO SEE A BEARING CUP ON ANY WHEEL ASSEMBLY TO BE CRACKED LIKE THIS. THE OUTBOARD WHEEL HALF CUP WAS FINE. TOTAL TIME AND CYCLES ARE UNKNOWN.

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