All of your airplanes must be quieter than mine. With the engine at full throttle and all of the air noise from going 170 knots i cannot hear any change in noise level whether they are open or closed. Of course I do wear my Zulu headset.
Dues overpaid December 17, 2018
RV12Is Southern Arizona Teen Aviation: wings, empennage & tail cone completed. Fuselage complete, engine hung, installing wiring/avionics
RV10 flying since July 2014- 615 hrs as of June 2019
RV6A sold after 500 hours of flying