MOSAIC Is Here: What It Means for Homebuilts
AV Web
JULY 23, 2025
The single biggest change is the increase in the maximum stall speed for airplanes a Sport Pilot can operate. The old limit was 45 knots calibrated airspeed (CAS) without flaps (V S1 ). The final rule raises this limit to 59 knots CAS (V S1 ). And those parameters have expanded significantly.
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