# SDR IAVA202008040001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 31, 2020
- Submitted: August 4, 2020
- Operation: Air carrier
- Aircraft: [N34BM](https://openairdocs.org/aircraft/N34BM), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53310
- Aircraft time: 13,087 hours, 33,018 cycles
- Engine: Allsn 250C47B
- Engine time: 12,315 hours, 10,446 cycles
- System (JASC): [6510 · Tail Rotor Drive Shaft](https://openairdocs.org/jasc/6510)
- Part: Drive Shaft
- Part number: 407040325105
- Condition: Cracked
- Location: Tail Rotor
- 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/IAVA202008040001

## Discrepancy

DURING 100 HOUR LUBRICATION OF TAIL ROTOR DRIVE SHAFT SPLINES THE #3 TAIL ROTOR DRIVE SHAFT WAS FOUND CRACKED AT ONE ATTACHMENT EAR. TOTAL TIME OF PART IS UNKNOW AS IT IS AN ON CONDITION PART.

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