What was found
DURING A TURBINE TEST (SLAVE ENGINE) THERE WAS AN UNCONTAINED FAILURE OF THE PT ROTOR ASSY (4TH STAGE WHEEL). THE WHEEL EXITED THE ENGINE AND CAUSED SUBSTANTIAL DAMAGE TO THE TEST FACILITY. 2 TEST MECHANICS RECEIVED MINOR INJURIES.
- Difficulty date
- January 14, 2010
- Submitted
- January 18, 2010
- Operation
- General aviation
- Engine
- Allsn 250C20B
- Engine time
- 3,881 hours, 4,347 cycles
- System (JASC)
- 7250 · Turbine Section
- Part
- Turbine Wheel
- Part number
- 6853279
- Part serial
- HX63915
- Condition
- Separated
- Location
- Engine
- Part time
- 3,881 hours, 4,347 cycles
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- T
- Precautionary procedure
- E
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.