# SDR 2023FA0000432

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 18, 2023
- Submitted: August 18, 2023
- Operation: General aviation
- Aircraft: N416BL
- 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: 40NC86
- Aircraft time: 2,216 hours
- Engine: Austro E4
- Engine time: 443 hours
- System (JASC): [7240 · Turbine Engine Combustion Section](https://openairdocs.org/jasc/7240)
- Part: Engine
- Part number: UNKNOWN
- Part serial: E4A06151
- Condition: Mismanufactured
- Location: Engine
- Part time: 443 hours
- Stage of operation: CL
- How discovered: O
- Nature of condition: W, E, R
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2023FA0000432

## Discrepancy

PILOT REPORTED ENGINE ROUGHNESS ON TAKEOFF WITH LOAD AND RPM OSCILLATIONS.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.