Service difficulty report · Turbine Blades · Bell 412

Difficulty date
January 4, 2008
Submitted
January 21, 2008
Operation
General aviation
Make and model
Bell 412
Engine
Pwa PT6T3
Part
Turbine Blades
Condition
Fractured
Location
Engine
Stage of operation
HO
How discovered
O
Nature of condition
E, R, J
Precautionary procedure
A

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

What was found

(CAN) DURING HOVER THE CREW NOTED VIBRATION FOLLOWED BY CHIP DETECTOR LIGHT ILLUMINATION AND LOSS OF POWER. POST FLIGHT INSPECTION REVEALED FRACTURED POWER TURBINE BLADES AND ASSOCIATED DAMAGE. IT WAS REPORTED THAT THE PILOT HAD DIFFICULTY STARTING THE ENGINE PRIOR TO THIS FLIGHT. MFG WILL CONTINUE INVESTIGATING THE EVENT AND ADVISE OF ROOT CAUSE ONCE ESTABLISHED (TC NR 20080116015)

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