Service difficulty report · Planetary Gear · Mtsbsi MU2B60

Difficulty date
March 3, 2005
Submitted
March 24, 2005
Operation
General aviation
Aircraft
N644EM
Make and model
Mtsbsi MU2B60
Aircraft serial
1534SA
Engine
Garrtt TPE33110
Propeller
Hartzl HCB4TN5
Part
Planetary Gear
Part number
8962321
Condition
Failed
Location
Reduction G/B
Stage of operation
CR
How discovered
O
Nature of condition
J
Precautionary procedure
E, A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

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)