# SDR 2020FA0000129

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 1, 2019
- Submitted: February 4, 2020
- Operation: General aviation
- Propeller: Hartzl HCB5MA3
- System (JASC): [6114 · Propeller Hub Section](https://openairdocs.org/jasc/6114)
- Part: Hub
- Part number: 840146
- Part serial: HBA1487
- Condition: Cracked
- Location: Propeller
- Component: Propeller, Hartzl
- Component part number: HCB5MA3D
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2020FA0000129

## Discrepancy

SEVERAL CRACKS FOUND IN MOUNTING BOLT THREADS OF HUB DURING MAGNETIC PARTICLE INSPECTION AT OVERHAUL.

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