Topcat is a program for calculating the Take-Off and Landingprestaties.

This program provides you with Load Sheets, Payload, Fuelload, Take-Off and Landing performance analysis, Individual Runway Tables including V1, VR and V2, optimum thrust and flaps configurations, de-rated and assumed/flex temperatures and stop margins.

Different weerservers (ASE, IVAO , etc.) you can pair it with Topcat.

This tool is for those who are a little deeper like to take in the matter how you, like in the real vliegwereld, according to the rules of the art, safer and more efficient takeoff and landing.

So something for the simmers that want more ...

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