# SDR UO22004F00007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 29, 2004
- Submitted: August 30, 2004
- Operation: Air carrier
- Aircraft: [N35TJ](https://openairdocs.org/aircraft/N35TJ), registered now
- Make and model: Lear 35A
- Registry model: [Lear 35A](https://openairdocs.org/model/gates-learjet-35a) (OpenAirDocs)
- Aircraft serial: 137
- Engine: Garrtt TFE7312B
- System (JASC): [7210 · Turbine Engine Reduction Gear](https://openairdocs.org/jasc/7210)
- Part: Bearing
- Part number: 307217810
- Part serial: P223
- Condition: Failed
- Location: Fan Gearbox
- Part time: 13,594 hours
- 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/UO22004F00007

## Discrepancy

1 EA PLANETARY BEARING FAILED, CAUSING MASSIVE CHAIN REACTION FAILURE WITHIN FAN GEARBOX.

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