Copyright © 2009 Steve Kollmansberger. This software is not FAA approved and is not a substitute for an FAA-approved Airplane Flight Manual. Always confirm all performance information and operating limitations with the airplane's FAA-approved Airplane Flight Manual. Estimation errors of 20% or more exist in various circumstances. Dry, paved, level runways only. The author of this software disclaims all liability of it's use; USE AT YOUR OWN RISK!