PA-28 Cherokee/Archer/Dakota/Pillan/Warrior
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Returned To Departure Airport; Flight Crew Landed in Emergency Condition; General Maintenance Action; General Flight Cancelled / Delayed
Aircraft
We were on a dual IFR time building cross-country flight from ZZZ to ZZZ1. After receiving take-off clearance on Runway XXR. On the ground roll; the engine indicated were all green; after rotation; during the climb at 100 ft.; there was a significant drop in RPM for 2 seconds then the engine went back to normal. I looked down to check for the carb heat was off; mixture full rich; fuel selector on the left tank; the fuel pump was on; verified everything. Then; the engine RPM dropped again. So; I decided to land with the remaining runway; power to idle; glide down to the runway. I [advised ATC]; landed safely with the remaining runway; and taxied back to the ramp. After post-flight inspection; we squawked the airplane.
Pilot flying PA-28 aircraft reported the engine RPM dropped significantly immediately after takeoff. Pilot reduced power to idle and landed straight ahead on the same runway.