Flight Crew Commercial; Flight Crew Flight Instructor; Flight Crew Multiengine; Flight Crew Instrument
Flight Crew Last 90 Days 80; Flight Crew Total 700; Flight Crew Type 700
Time Pressure; Distraction; Troubleshooting; Workload
Aircraft Equipment Problem Critical
Air Traffic Control Issued New Clearance; Flight Crew Landed in Emergency Condition; Flight Crew Returned To Departure Airport; Flight Crew Requested ATC Assistance / Clarification; Flight Crew Overcame Equipment Problem
Aircraft
In the upwind Rwy XXL; at 200 ft. instantaneous loud popping and vibration was heard by both pilots. RPM maintained 2150 RPM's and both engine instruments were in green. Immediately upon noticing possible engine problem I as the Instructor took over 'flight controls' and completed a 'positive exchange of controls'. I maintained positive aircraft control flying the upwind. I communicated with ZZZ Tower immediately with a 'Pan-Pan' call and was given an immediate clearance to return to Airport and made the decision to start turn back towards Airport environment. ZZZ Tower offered assistance to any Runway; I declined. Requested Runway XXR; was cleared to land; landed XXR and landed safely. Taxied back to parking without incidence.
Flight Instructor reported while on upwind there was excessive engine vibration and a 'loud popping' noise so they returned to the airport.