# SDR ALGA088160

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 21, 2003
- Submitted: July 28, 2003
- Operation: Air carrier
- Aircraft: [N507AL](https://openairdocs.org/aircraft/N507AL), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53103
- Aircraft time: 14,266 hours
- Engine: Allsn 250C30S
- Engine time: 9,343 hours
- System (JASC): [6230 · Main Rotor Mast/Swashplate](https://openairdocs.org/jasc/6230)
- Part: Gear
- Part number: 23068295
- Part serial: NN137777
- Condition: Spalled
- Location: Gearbox
- Part time: 288 hours
- Component: Gearbox
- Component part number: 23035179
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ALGA088160

## Discrepancy

HEAVY SPALLING ON GEAR TEETH DUE TO IMPROPER MESHING OF GEAR TEETH. REMOVED AND REPLACED.

---
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.