Service difficulty report · Turbine Blades · Bell 412EP

Difficulty date
October 4, 2011
Submitted
January 23, 2013
Operation
Air carrier
Make and model
Bell 412EP
Engine
Pwa PT6T3
Part
Turbine Blades
Condition
Failed
Location
Engine
Stage of operation
CR
How discovered
O
Nature of condition
O
Precautionary procedure
F

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

What was found

(CAN) DURING FLIGHT, THE CREW RECEIVED AN "ENGINE OUT" WARNING FOLLOWED BY A FIRE WARNING. THE FIRE BOTTLE WAS DISCHARGED AND AN EMERGENCY LANDING WAS MADE SAFELY ON A ROAD. POST FLIGHT INSP FOUND FRACTURED POWER TURBINE BLADES AND THE COMPRESSOR ROTOR HARD TO TURN. SOME HEAT DAMAGE/DISCOLORATION WAS FOUND ON THE AIR PLENUM CHAMBER AND UPPER FIREWALL. THE ENGINE, WHICH HAD BEEN SERVICED THE DAY BEFORE FOR A CHIP DETECTOR WARNING, WILL BE REMOVED AND SENT FOR INVESTIGATION AND REPAIRS. MFG WILL INVESTIGATE TO ESTABLISH ROOT CAUSE AND SUPPLEMENT THE REPORT ONCE THE INFORMATION IS AVAILABLE.

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