Service difficulty report · Turbine Blades

Difficulty date
January 5, 2006
Submitted
June 6, 2006
Operation
General aviation
Engine
Allsn 250C*
Part
Turbine Blades
Part number
6886407
Condition
Broken
Location
Engine
Part time
120 hours
Stage of operation
TX
How discovered
O
Nature of condition
C, W
Precautionary procedure
E, D

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

What was found

TURBINE RECEIVED AT ESSENTIAL TURBINES IN A DISASSEMBLE STATE. LOG CARDS REFLECT THAT THE TURBINE HAD BEEN INVOLVED IN A HARD LANDING. IT HAD BEEN INSPECTED AND SENT TO MAC-V AVIATION WHO RE-ASSEMBLED THE ENGINE. MAC-V STATED VIA A PHONE CALL THAT THE HARDWARE WAS MIXED IN THE COMBUSTION SECTION AND COULD NOT FIND ALL OF THE NUTS, BOLTS ETC. OUR INVESTIGATION LEADS US TO BELIEVE THAT THE HARD LANDING WAS NOT A FACTOR. THE FAILED TURBINE WHEEL WILL BE FORWARDED TO THE SAFETY BOARD TO EVALUATE THE REASON FOR FAILURE, POSSIBLY DUE TO FOD FROM ITEM MISSED DURING RE-ASSEMBLY.