# SDR 20010425CW004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 20, 2001
- Submitted: April 25, 2001
- Operation: Air carrier
- Aircraft: N16EP
- Make and model: Bell 206B
- Registry model: [Bell 206B](https://openairdocs.org/model/bell-206b) (OpenAirDocs)
- Aircraft serial: 3081
- Engine: Allsn 250B*
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Case
- Part number: 206040150029
- Part serial: B129150
- Condition: Cracked
- Location: Transmission
- Part time: 7,456 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/20010425CW004

## Discrepancy

DURING A NORMAL 4500 HOUR TRANSMISSION OVERHAUL THE LOWER CASE WAS FOUND CRACKED ON ALL 4 SUPPORT WEBS, CAUSING THE CASE TO BE UNAIRWORTHY.

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