Flight Crew Commercial; Flight Crew Flight Instructor; Flight Crew Multiengine; Flight Crew Instrument
Flight Crew Last 90 Days 200; Flight Crew Total 1749; Flight Crew Type 1300
Troubleshooting
Aircraft Equipment Problem Critical
Air Traffic Control Provided Assistance; Flight Crew Landed in Emergency Condition; Flight Crew Requested ATC Assistance / Clarification; General Flight Cancelled / Delayed; General Maintenance Action
Aircraft
Doing slow flight with a student. During maneuver we started to decrease throttle and our rpm went to max rpm. I immediately took control of plane and started reducing fuel flow to starve engine; once the situation seemed to be under control we called Approach and let them know what was going on. 1.5-2.0 miles south of runway XX the runway was assured. I started cutting the mixture idle cut off. I knew I had plenty of speed to kill before I could deploy flaps. We landed safely on Runway XX and taxied off at Foxtrot still blocking the runway.
C712 Instructor reported uncontrollable engine RPM on short final.