# SDR 2023FA0000431

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 18, 2023
- Submitted: August 18, 2023
- Operation: General aviation
- Aircraft: [N518BL](https://openairdocs.org/aircraft/N518BL), registered now
- Make and model: Diamon DA 40 NG
- Registry model: [Diamon DA 40 NG](https://openairdocs.org/model/diamond-aircraft-ind-da-40-ng) (OpenAirDocs)
- Aircraft serial: 40NC216
- Aircraft time: 585 hours
- Engine: Austro E4
- Engine time: 585 hours
- System (JASC): [8500 · Engine (Reciprocating)](https://openairdocs.org/jasc/8500)
- Part: Engine
- Part number: UNKNOWN
- Part serial: E4A06407
- Condition: Mismanufactured
- Location: Engine
- Part time: 585 hours
- Stage of operation: CL
- How discovered: O
- Nature of condition: E, O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2023FA0000431

## Discrepancy

PILOT REPORTED THAT THERE WAS ENGINE ROUGHNESS AND VIBRATIONS DURING TAKEOFF, NOTICED MOST AROUND 700 FEET AGL. THEY ALSO REPORTED PROP OVERSPEED.

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