# SDR N3XR202104050004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 5, 2021
- Submitted: April 5, 2021
- Operation: General aviation
- Filed by: [Embry-Riddle Aeronautical University Inc, repair station N3XR816N](https://openairdocs.org/faa-repair-station/N3XR816N/embry-riddle-aeronautical-university-inc.md) (OpenAirDocs)
- Aircraft: N315ER
- Make and model: Diamon DA 42 NG
- Registry model: [Diamon DA 42 NG](https://openairdocs.org/model/diamond-aircraft-ind-da-42-ng) (OpenAirDocs)
- Aircraft serial: 42N214
- Aircraft time: 2,965 hours
- Engine: Austro E4
- Engine time: 1,258 hours
- System (JASC): [8500 · Engine (Reciprocating)](https://openairdocs.org/jasc/8500)
- Part: Damper
- Part number: E4B73000000KIT
- Part serial: 00434
- Condition: Worn
- Location: Right
- Part time: 615 hours
- 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/N3XR202104050004

## Discrepancy

DURING AN ANNUAL INSPECTION, THE LEFT TORSION VIBRATION DAMPER (TVD) P/N-E4B-73-000-000-KIT, WAS INSPECTED FOR RIVET WEAR IT WAS BELOW LIMITS. THE ASSEMBLY WAS REPLACED WITH A NEW UNIT.

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