Thanks to everyong for all the good information. "Checking me AherSpeed" that's why I'm here.
When we bought the plane and flew it home, we were impressed by the cruise airspeed showing 105 to 110 mph. We flew loose formation with a Cessna 175 that we took to get the plane; he was showing 80mph with one notch of flaps just to rub it in. We've all noticed that if you fly the correct indicated airspeeds it gets too slow and drops in, so we've been adding about 10 mph. We installed a GPS in the panel, flew each cardinal heading at 100mph indicated, GPS four way average was 88 mph (77 knots). So we are looking for about 12 mph extra. I suspect the static system has a problem, probably beyond the "calibration ring". We'll look at it tonight. We set out last evening to check out the static system and got side tracked with the pitot ring thing, and a student preparing for a checkride. mitch - 99325
