Obstacles

Important: These forums are for discussions between SkyDemon users. They are not routinely monitored by SkyDemon staff so any urgent issues should be sent directly to our Customer Support.

Obstacles

Author	Message
Xavier	Xavier posted 10/19/2012 11:28:16 PM Topic Details Share Topic
Group: Forum Members Posts: 28, Visits: 85	I'm comparing Skydemon and the last 1/250000 SIA Paris Area Chart Most of the obstacles of the SIA Chart are not on Skydemon map. There must be some sort of filter used by SkyDemon to show only some obstacles and not all of them. Can we have the rule of that filter?
	Reply Like 62
*stevelup*	*stevelup* posted 10/21/2012 10:55:52 AM Post Details Share Post
Group: Moderators Posts: 593, Visits: 4.9K	I suspect SD only shows obstacles that are in the AIP. It's possible that there is more detail on the SIA chart than there is in the AIP?
	Reply Like 45
Tim Dawson	Tim Dawson posted 10/25/2012 3:58:27 PM Post Details Share Post
Group: Forum Members Posts: 8K, Visits: 9.1K	The main filter we use is that obstacles must be at least 300ft AGL to feature in our maps.
	Reply Like 47
Xavier	Xavier posted 10/30/2012 9:10:14 PM Post Details Share Post
Group: Forum Members Posts: 28, Visits: 85	Just for the community of users to know: on SIA Paris 1/250000 Chart, there are many obstacles higher than 300ft which are not on SkyDemon Chart. Any MSA calculated by SkyDemon can hence be totally misguiding. Is the reason that SIA uses a difference obstacle database than the one which is made available to SkyDemon? SIA means Service d'Information Aeronautique, it's a government body, I would find it questionable that such an official institution retains safety information such as obstacle data.
	Reply Like 45
Tim Dawson	Tim Dawson posted 11/26/2012 3:47:38 PM Post Details Share Post
Group: Forum Members Posts: 8K, Visits: 9.1K	I believe the data we use is basically the same as what the French publish in their AIP for pilots. If they are omitting an obstruction from their AIP which could be dangerous to aircraft, please let them know.
	Reply Like 51