Vortex Generator Kit for PA-31 & PA-31-325CR
New Gross Takeoff Weight of 6,840 lbs.

Factory
BLR modified
Improvement
Max Ramp Weight 6,540 6,870 +340
Gross Takeoff Weight 6,500 6,840 +340
Vmc 76 76 No Change
Vmc - Flaps 15° n/a 68 New
Stall Speed - Flaps Up 76 77 +1
Stall Speed - Flaps 15° 75 74 +1
Stall Speed - Flaps 30° 70 71 +1
Liftoff Speed 81 81 No Change
Approach Speed 91 89 -5

NOTE:
1. Stall & Liftoff speeds are given at the new gross weight of 6,840 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 6,500 lbs.