Narrative:

Upon level off VFR at 9500 ft, at resetting power from climb (1400 torque) to cruise (1100 torque), the right engine would not respond to throttle movement. The engine was stuck at climb power setting. While I was initially PIC, the other pilot and I traded planes at company request since he had much more time and experience in that type of aircraft. We circled for 30 mins while we consulted with company maintenance and tried various methods to regain throttle control. We finally shut down the right engine by shutting off the condition lever and feathering the propeller, and landed on the left engine only. We declared an emergency per company procedure, but landed without further incident. As of the following day, maintenance had not yet determined the cause of the problem.

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Original NASA ASRS Text

Title: FLC OF ATX SMT ACFT SHUTDOWN 1 ENG WHEN IT BECAME UNCTLABLE DURING LEVEL OUT AFTER CLB.

Narrative: UPON LEVEL OFF VFR AT 9500 FT, AT RESETTING PWR FROM CLB (1400 TORQUE) TO CRUISE (1100 TORQUE), THE R ENG WOULD NOT RESPOND TO THROTTLE MOVEMENT. THE ENG WAS STUCK AT CLB PWR SETTING. WHILE I WAS INITIALLY PIC, THE OTHER PLT AND I TRADED PLANES AT COMPANY REQUEST SINCE HE HAD MUCH MORE TIME AND EXPERIENCE IN THAT TYPE OF ACFT. WE CIRCLED FOR 30 MINS WHILE WE CONSULTED WITH COMPANY MAINT AND TRIED VARIOUS METHODS TO REGAIN THROTTLE CTL. WE FINALLY SHUT DOWN THE R ENG BY SHUTTING OFF THE CONDITION LEVER AND FEATHERING THE PROP, AND LANDED ON THE L ENG ONLY. WE DECLARED AN EMER PER COMPANY PROC, BUT LANDED WITHOUT FURTHER INCIDENT. AS OF THE FOLLOWING DAY, MAINT HAD NOT YET DETERMINED THE CAUSE OF THE PROBLEM.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.