# SDR 99ZZZX3346

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 17, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N437AL](https://openairdocs.org/aircraft/N437AL), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53141
- System (JASC): [6510 · Tail Rotor Drive Shaft](https://openairdocs.org/jasc/6510)
- Part: Shaft
- Part number: 406040320101
- Condition: Worn
- Location: Tail Rotor
- Part time: 2,253 hours
- Component: 407040303101
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX3346

## Discrepancy

FOUND SPLINES WORN BEYOND LIMITS (406-040-320-101).  FOUND HOUSING CRACKED (206-061-432-116).  FOUND 2 EACH BEARINGS ROUGH (407-340-339-103).  TT 4.77.4 HOURS.

---
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.