Hi,

With the very high temperatures we have in West Europe this week, I've realized that the almost only information I don't have in Skydemon is a density altitude calculator. I do not speak about implementing a complete performance calculator (this is not what I expect from SD), but a gentle calculator with a clear marking of the density altitude for a specific place (METAR-based) could be a gentle reminder that reviewing the performance tables is not optional.

Today, due to the temperature, taking-off from my usual airfield would have been very challenging

M

That would be a great addition! Use the METAR information to calculate DA and show a warning next to the airport if DA is above a user settable threshold. The user already sets his personal VFR minima, so setting his personal DA limit fits nicely into the paradigm.

-- Chris.

honestly i don't think that there can be such a thing like a personal DA limit .. your DA limit should depend on available runway length, loading of the aircraft , surrounding terrain, airspaces and weather (like wind and clouds)..

however i do like the idea of seeing this information in skydemon.. how about placing this information in the Approach Information of an airfield right where the runway dimensions, head/tailwind and surface wind info is displayed?

Maybe I expressed my self badly. What I meant was the service ceiling of the aircraft or some other performance related limit. My limit is that altitude at which I can still achieve a 200 fpm climb at full gross.

-- Chris.