SDR BIGA20190721001

Service difficulty report · Engine · Casa C212CC

Difficulty date: July 21, 2019
Submitted: July 25, 2019
Operation: Air carrier
Aircraft: N107BH
Make and model: Casa C212CC
Aircraft serial: 165
Aircraft time: 14,425 hours, 17,800 cycles
Engine: Garrtt TPE33110R
Engine time: 971 hours, 920 cycles
System (JASC): 7200 · Engine (Turbine/Turboprop)
Part: Engine
Condition: Malfunctioned
Stage of operation: CR
How discovered: O
Nature of condition: J
Precautionary procedure: E, A

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

What was found

RIGHT ENGINE SURGED, UP TO 100% AND COULD NOT BE REDUCED. CHIP DETECTOR LIGHT CAME ONE AND OIL PRESSURE WENT TO ZERO. PILOT FOLLOWED EMERGENCY PROCEDURES SHUT DOWN ENGINE AND RETURNED TO THE NEARBY AIRPORT. AFTER LANDING THE ENGINE PROPELLER COULD NOT BE ROTATED. THE CHIP DETECTOR SHOWED SIGNIFICANT METAL DEPOSITS, BUT THE OIL BYPASS INDICATOR PIN WAS NOT POPPED. ENGINE REMOVED. FOUND THAT THE BULL GEAR FAILED CAUSING EXTENSIVE DAMAGE TO VARIOUS OTHER COMPONENTS IN THE GEAR BOX.