Verify before flight. Check the POH/AFM for aircraft-specific limits and performance.
Performance
Maneuvering Speed at Weight Calculator
Estimate Va at a lower weight using the square-root weight relationship.
kt
lb
lb
Adjusted Va—
Weight ratio—
Change from published—
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Va at 2,200 pounds
With published Va of 113 kt at 2,550 lb, the square-root estimate at 2,200 lb is 113 × √(2,200 / 2,550) ≈ 105 kt.
Use the aircraft’s published weight-specific speeds when available. Va is not protection from every combination of abrupt or repeated control inputs.
Formula and method
Adjusted Va ≈ published Va × √(current weight ÷ published reference weight).