# SDR 2020FA0000249

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 12, 2020
- Submitted: May 12, 2020
- Operation: General aviation
- Aircraft: [N21900](https://openairdocs.org/aircraft/N21900), registered now
- Make and model: Cessna 150L
- Registry model: [Cessna 150L](https://openairdocs.org/model/cessna-150l) (OpenAirDocs)
- Aircraft serial: 15074521
- Aircraft time: 6,956 hours
- Engine: Cont O200A
- Engine time: 6,956 hours
- Propeller: Mcauly 1A101HCM
- System (JASC): [8520 · Reciprocating Engine Power Section](https://openairdocs.org/jasc/8520)
- Part: Crankshaft
- Part number: 653012
- Part serial: R193841
- Condition: Cracked
- Location: Engine
- Part time: 6,956 hours
- Component: Engine, Cont, 0200A
- Component part number: 0200A
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2020FA0000249

## Discrepancy

AIRCRAFT IN FOR ANNUAL INSPECTION, REMOVED SPINNER TO CHECK PROP HUB, S/N, MODEL. NOTICED CRANKSHAFT OIL PLUG MISSING, LOOKED INSIDE CRANKSHAFT BORED HOLE I NOTICE A 1/2" CRACK AT BOTTOM OF BORED HOLE CRACK STARTS AT CENTER OF CRANKSHAFT AND RADIATES OUTWARD.

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