Airspace warnings - Flight Level / QNH

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.

Airspace warnings - Flight Level / QNH

Author	Message
pschartau	pschartau posted 4/23/2013 11:17:35 AM Topic Details Share Topic
Group: Forum Members Posts: 55, Visits: 1.2K	Assuming I am using Skydemon on a mobile device providing GPS altitude. GPS altitude should roughly correspond to Altitude (QNH). How does SkyDemon work out what Flight Level I'm at to warn me of airspace that's defined in terms of FL? Is it worked out automatically based on QNH information from downloaded METARS?
	Reply Like 60
Tim Dawson	Tim Dawson posted 5/7/2013 4:11:09 PM Post Details Share Post
Group: Forum Members Posts: 8.1K, Visits: 9.3K	No, SkyDemon does not currently attempt any kind of pressure-based calculations to change FL to actual altitude before issuing warnings. FL75 always evaluates to 7500 feet.
	Reply Like 40
pschartau	pschartau posted 5/8/2013 11:42:32 AM Post Details Share Post
Group: Forum Members Posts: 55, Visits: 1.2K	Thanks Tim. I think it would be quite valuable to correct FL properly based on the regional pressure, if we are to rely on airspace warnings from SD in flight... (especially as I have now started to use SD in a glider due to its superior airspace and NOTAM depiction!)
	Reply Like 49