Skyhawk 172/Cutlass 172
Flight Crew Flight Instructor; Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Commercial
Flight Crew Last 90 Days 100; Flight Crew Total 760; Flight Crew Type 605
Aircraft Equipment Problem Critical
Flight Crew Landed in Emergency Condition
Aircraft
During descent into for landing; student pulled power from cruise setting to normal descent setting; with no change in RPM noted. Instructor took over the controls to troubleshoot the issue. Power was stuck at 2500 rpm for the descent. In the downwind at 2;000 ft. msl; max speed was 135 IAS. Mixture was pulled to the idle cutoff to start reducing speed as a turn towards the airport was made. Flaps were extended as necessary to ensure a safe landing. Executed a power off landing with no damage to the airport property; aircraft or the three persons on board.
C-172 instructor reported loss of control over the aircraft's engine; which resulted in a power-off airport landing.