# SDR N3XR202106170001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 11, 2021
- Submitted: March 17, 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: [N312ER](https://openairdocs.org/aircraft/N312ER), registered now
- 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: 42N213
- Aircraft time: 2,866 hours
- Engine: Austro E4
- Engine time: 642 hours
- System (JASC): [8510 · Reciprocating Engine Front Section](https://openairdocs.org/jasc/8510)
- Part: Dampener
- Part number: E4B73000000KIT
- Part serial: 045578
- Condition: Worn
- Location: Torsion Vibr
- Part time: 642 hours, 642 cycles
- 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/N3XR202106170001

## Discrepancy

DURING AN ANNUAL INSPECTION, THE TORSION VIBRATION DAMPER (P/N-E4B-73-000-000-KIT) WAS INSPECTED PER THE MANUFACTURER'S INSTRUCTIONS. THE RIVETS WERE BELOW THE PUBLISHED DIMENSION. THESE ARE INSPECTED EVERY 600 HOURS AND OFTEN FAIL.

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