Vortex Generator Kit for PA-31 (425)

Factory
BLR modified
Improvement
Max Ramp Weight 7,800 7,800 No Change
Gross Takeoff Weight 7,800 7,800 No Change
Vmc ? 80 -?
Vmc - Flaps 15° 83 77 -6
Stall Speed - Flaps Up 81 77 -4
Stall Speed - Flaps 30° 72 67 -5
Liftoff Speed 83 82 -1
Approach Speed 97 87 -10

NOTE:
1. Stall & Liftoff speeds are given at the new gross weight of 7,800 lbs.
2. Vmcs are tested light weight, aft CG, wind milling propeller.
3. Approach is based on 1.3 X Vso at Max, landing weight of 7,800 lbs.