# SDR 2023F00134

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 4, 2023
- Submitted: May 8, 2023
- Operation: General aviation
- Aircraft: N297KH
- Make and model: Cessna 525B
- Registry model: [Cessna 525B](https://openairdocs.org/model/cessna-525b) (OpenAirDocs)
- Aircraft serial: 297
- Engine: Wilint FJ443A
- System (JASC): [2435 · Starter-Generator](https://openairdocs.org/jasc/2435)
- Part: Starter Gen
- Part number: 99121252
- Part serial: 1502XL2
- Condition: Unknown
- Location: Zone 400
- Part time: 4,212 hours, 4,144 cycles
- Component: Engine, Wilint, FJ44
- Component part number: 67000200
- Stage of operation: AA
- How discovered: V
- Nature of condition: K
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2023F00134

## Discrepancy

ENGINE LOST OIL PRESSURE DUE TO A CRACK IN THE ACCESSORY CASE.     SUSPECTED CAUSE IS A VIBRATION FROM THE START/GEN.    APPARENTLY WILLIAMS IS AWARE OF THE ISSUE AND CESSNA HAS WORKED TO IMPROVE THE START/GEN DESIGN TO ELIMINATE THE VIBRATION.

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