Service difficulty report · Turbine Wheel

Difficulty date
March 31, 2015
Submitted
August 5, 2015
Operation
General aviation
Engine
Pwa PT6T6
Part
Turbine Wheel
Condition
Fractured
Location
Engine
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

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

What was found

(CAN) CUSTOMER REPORTED SEEING FLAMES EXITING THE ENGINE EXHAUST DUCT WHILE THE HELICOPTER WAS IN HOVER. ACFT LANDED AND EMERGENCY SHUTDOWN WAS PERFORMED. BORESCOPE INSPECTION OF THE ENGINE HOT SECTION REVEALED DISTRESSED, FRACTURED, CT BLADES THROUGHOUT THE ENTIRE CT DISK.