DA20 Undifferentiated
Flight Crew Commercial; Flight Crew Instrument; Flight Crew Flight Instructor
Flight Crew Last 90 Days 40; Flight Crew Total 567; Flight Crew Type 200
Aircraft Equipment Problem Critical
Flight Crew Landed in Emergency Condition; Flight Crew Returned To Departure Airport
Aircraft
On initial climbout at 1;000 MSL our aircraft had a sudden decrease in RPM to 1;200 and began shaking violently. Instructor seized the controls and turned around to land on the opposite runway; immediately [alerting ATC]. Power was restored on the descent and aircraft stopped shaking. The landing was made on XXR with no other issues.
Flight Instructor reported that the aircraft had a sudden drop in RPM after takeoff.