What was found
ON THE 23RD OF JUNE, 1997 IN CRUISE FLIGHT, LEFT ENGINE WENT TO MAX POWER EXCEEDING TORQUE, TEMP, AND SPEED LIMITS. ENGINE WAS SHUT DOWN WITH THE FIREWALL SHUT OFF, PROPELLER FEATHERED, AND A DECLARED EMERGENCY LANDING MADE AT PHF WITHOUT ANY FURTHER PROBLEMS. UPON FURTHER INVESTIGATION, FOUND BEARINGS IN FUEL CONTROLLER INPUT SHAFT DETERIORATED CAUSING THE SHAFT TO DISENGAGE CAUSING AN OUT OF CONTROL ENGINE RUNAWAY.