Skylane 182/RG Turbo Skylane/RG
Flight Crew Commercial; Flight Crew Instrument
Flight Crew Last 90 Days 17; Flight Crew Total 1700; Flight Crew Type 962
Aircraft Equipment Problem Critical
Flight Crew Overcame Equipment Problem; General Maintenance Action
Aircraft
My plane was just out of annual with an engine overhaul. I had completed two one-hour break-in flights in the airport vicinity. This trip was to start the longer flight phase of breaking in the new engine. I flew uneventfully [for] a distance of about 200 nm. I refueled; took a short break; and returned to [home airport]. The cruise phase of the flight was uneventful.On short final I reduced power to about 16 inches; slightly above my normal final setting; to ensure that the engine was still powering the propeller since this is considered important for engine break-in. At an altitude of around 15 feet; I pulled the throttle back to reduce the engine to idle power. This however had no effect. I then tried to increase power for a go-around; intending to diagnose the problem in the air. This also had no effect.I then pulled the mixture control; which stopped the engine. I made a normal power-off landing and had enough momentum to taxi off the runway; where I stopped. I restarted the engine and confirmed that the throttle was ineffective and that the engine was producing significant power; too much to taxi safely.I notified Ground of the situation and waited for a tow-truck from the shop that had done the engine overhaul; for a period of about 30 minutes. The aircraft was then towed back to their hangar.
Cessna 182 pilot reported that during break-in following overhaul the engine became non-responsive to throttle inputs on short final.