Skyhawk 172/Cutlass 172
Flight Crew Commercial; Flight Crew Flight Instructor; Flight Crew Multiengine; Flight Crew Instrument
Flight Crew Last 90 Days 133; Flight Crew Total 990; Flight Crew Type 715
Aircraft Equipment Problem Critical
Flight Crew Overcame Equipment Problem; Flight Crew Landed in Emergency Condition; Flight Crew Returned To Departure Airport
Aircraft
On the initial climb after takeoff; I noticed we were flying 10 kts. slower than normal and only maintaining level flight. Immediately after I noticed that; my student and I heard a popping sound and the airplane started to shake. I looked at the tachometer and noticed the RPM decreasing; so I pulled the power to idle; put in full flaps; and held a full slip to land back on the runway. I did this since we were experiencing a partial engine failure. My student and I were okay; and we were able to taxi the airplane back to the Ramp.
C-172 Flight Instructor reported encountering a partial engine failure immediately after takeoff.