X21RV6A
Member
Noticed this over the weekend after a departure from the airport. Started to level out, RPM/Manifold transitioned to 23/23 and the Dynon Tach indicated RPM's jumping from 2300 to 2600 or higher than back to 2300 then back to 2600 again. I cycled the mag switch and after the 2nd time it stopped. This happened 2 additional times that same day, each time after climbout and transiting into cruise and was stopped by cycling the mags one or two times. Engine is a 0360-A1A with CS Hartzell and standard mags. I couldn't tell if the engine was really losing RPM or if it's just the Dynon D10-A displaying artifact?
Do I have a switch problem or an early sign of a mag going south? The mags were rebuilt 120 hours ago and have 740 total time.
Any suggestions?
Do I have a switch problem or an early sign of a mag going south? The mags were rebuilt 120 hours ago and have 740 total time.
Any suggestions?