One important calculation I am missing is take-off and landing distance. Maybe consider using the METAR inputs for density altitude etc.

Hi Chris,

‌‌Of course there are apps which calculate take-off and landing distance. The question is: how reliable are they? I maintain that they are very unreliable and maybe even misleading because they cannot take into account many important facts which are unknown to any app.

There is nothing like real on-location first-hand knowledge of the conditions. Taking off from a grass surface is, for example, a big unknown. How rough is the surface? How long the grass? Is it wet or dry?

The danger is that‌ an app can lead the pilot into believing the number displayed on the screen even though it may have little connection to what actually is going on. Better not to show a number and force the pilot to do his own reconnaissance and thinking.

-- Chris.‌‌‌

hi chris

well of course a pilot needs to look out the window and fly in real life in the end. and of course there will be no calculation 100% accurate. but it can give you additional information and that's helpful to increase your situational awareness. by following your arguments every POH giving you numbers on the distances is completly useless... how are you deciding wether your plane is capable of landing and taking off at a specific airport?

i just want to say that there is a requirement to do those calculations but not a single app on the market which is giving me as the pilot completly everything i need out of one single hand.

but as long as we as customers are discussing features like this and not getting to one single opinion, SD will most likely not even touch that topic...