# SDR 2005FA0000401

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 3, 2005
- Submitted: March 24, 2005
- Operation: General aviation
- Aircraft: [N644EM](https://openairdocs.org/aircraft/N644EM), registered now
- Make and model: Mtsbsi MU2B60
- Aircraft serial: 1534
- Engine: Garrtt TPE33110
- Propeller: Hartzl HCB4TN5
- System (JASC): [7210 · Turbine Engine Reduction Gear](https://openairdocs.org/jasc/7210)
- Part: Ring Gear
- Part number: 8967451
- Condition: Broken
- Location: Reduction G/B
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: E, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2005FA0000401

## Discrepancy

ON 2/26/2005, AN UNCOMMANDED, INFLIGHT CONTAINED SHUTDOWN OCCURED ON THE LT ENGINE DUE TO A GEARBOX FAILURE.  THE AIRCRAFT WAS NOT DAMAGED AND MADE A NORMAL LANDING.  INVESTIGATION IN THE ENGINE GEARBOX REVEALED THAT THE RING GEAR SUPPORT AND PLANETARY SPUR GEAR WERE BROKEN.  (K)

---
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.