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Notams displayed incorrectly


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wyullg
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I have noticed that a few notams have radius of x, but for some reason SkyDemon is increasing the radius of the notams and drawing the increased radius on the map. Attached is an example. Could this be fixed please.
grahamb
grahamb
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wyullg - 11/27/2020 4:27:38 PM
I have noticed that a few notams have radius of x, but for some reason SkyDemon is increasing the radius of the notams and drawing the increased radius on the map. Attached is an example. Could this be fixed please.

Are you sure you are not confusing the radius of danger as per the text of the NOTAM, as opposed to the 'Radius of Influence' as coded in the Q-line? SD plots the latter.

(NB, your example wasn't attached)



wyullg
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wyullg - 11/27/2020 4:27:38 PM
I have noticed that a few notams have radius of x, but for some reason SkyDemon is increasing the radius of the notams and drawing the increased radius on the map. Attached is an example. Could this be fixed please.

I can't seem to upload an image using safari, but to the west of EGTK there is a searchlight display with 1nm radius, but Skydemon is saying 5nm radius. To the west of Little Rissington there is a Met Balloon with 3nm radius and SkyDemon says 4nm. 



wyullg
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grahamb - 11/27/2020 4:31:46 PM
wyullg - 11/27/2020 4:27:38 PM
I have noticed that a few notams have radius of x, but for some reason SkyDemon is increasing the radius of the notams and drawing the increased radius on the map. Attached is an example. Could this be fixed please.

Are you sure you are not confusing the radius of danger as per the text of the NOTAM, as opposed to the 'Radius of Influence' as coded in the Q-line? SD plots the latter.

(NB, your example wasn't attached)



That would explain that. Thank you

Tim Dawson
Tim Dawson
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We just display what the NOTAM is coded as. Occasionally we can refine that manually, but you need to know that's how NOTAMs work.
pilot-byom
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wyullg - 11/27/2020 4:27:38 PM
I have noticed that a few notams have radius of x, but for some reason SkyDemon is increasing the radius of the notams and drawing the increased radius on the map. Attached is an example. Could this be fixed please.

If your expectation is Skydemon drawing NOTAMs on the map, you are wrong, unfortunately.

As the guys made clear several times already in quite some threads, their colored decoration bubbles they draw on the map are just the graphical depiction of 'you'd better read a NOTAM here, there is something approximately somewhere around' and big NO, only looking at the Skydemon map with NOTAM is no flight preparation, it takes further reading of the textual NOTAM to understand what is going on. And before complains arise, yes, other solutions treat the issue NOTAMs very different, but also on a higher expense level. I am fine with this low budget solution and even disabled showing 'NOTAM' in Skydemon.

Edited 12/10/2020 3:06:58 PM by pilot-byom
Tim Dawson
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You always need to read the NOTAM briefing, because there are many NOTAM that cannot be graphically depicted.

Having said that, it's usually worth posting about a NOTAM where you think we could have done a better job interpreting the text to draw a more specific illustration than the fail-safe Q-line circle that all NOTAM have. Just like in this thread. Thanks!

pilot-byom
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Tim Dawson - 12/10/2020 3:46:09 PM
You always need to read the NOTAM briefing, because there are many NOTAM that cannot be graphically depicted.

Having said that, it's usually worth posting about a NOTAM where you think we could have done a better job interpreting the text to draw a more specific illustration than the fail-safe Q-line circle that all NOTAM have. Just like in this thread. Thanks!

First thing is a general one, I'd welcome if all NOTAM 'Q-circles' are drawn 2 nautical miles bigger due to the Q-line not using seconds as a geo location. By adding 2 nautical to the radius one would be sure the real affected area of the NOTAM is surely within the circle drawn. Just as a safety add-on to avoid people smashing into closed airspace while they see themselves outside the area.

grahamb
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pilot-byom - 12/11/2020 2:49:56 PM
Tim Dawson - 12/10/2020 3:46:09 PM
You always need to read the NOTAM briefing, because there are many NOTAM that cannot be graphically depicted.

Having said that, it's usually worth posting about a NOTAM where you think we could have done a better job interpreting the text to draw a more specific illustration than the fail-safe Q-line circle that all NOTAM have. Just like in this thread. Thanks!

First thing is a general one, I'd welcome if all NOTAM 'Q-circles' are drawn 2 nautical miles bigger due to the Q-line not using seconds as a geo location. By adding 2 nautical to the radius one would be sure the real affected area of the NOTAM is surely within the circle drawn. Just as a safety add-on to avoid people smashing into closed airspace while they see themselves outside the area.

Why 2nm, when the maximum displacement error would be 0.707 nautical miles? If you actually read the NOTAM, there is no issue about 'smashing into' things. 

pilot-byom
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grahamb - 12/11/2020 3:59:55 PM
pilot-byom - 12/11/2020 2:49:56 PM
Tim Dawson - 12/10/2020 3:46:09 PM
You always need to read the NOTAM briefing, because there are many NOTAM that cannot be graphically depicted.

Having said that, it's usually worth posting about a NOTAM where you think we could have done a better job interpreting the text to draw a more specific illustration than the fail-safe Q-line circle that all NOTAM have. Just like in this thread. Thanks!

First thing is a general one, I'd welcome if all NOTAM 'Q-circles' are drawn 2 nautical miles bigger due to the Q-line not using seconds as a geo location. By adding 2 nautical to the radius one would be sure the real affected area of the NOTAM is surely within the circle drawn. Just as a safety add-on to avoid people smashing into closed airspace while they see themselves outside the area.

Why 2nm, when the maximum displacement error would be 0.707 nautical miles? If you actually read the NOTAM, there is no issue about 'smashing into' things. 

Because it is two coordinates and Pythagoras, so up to 1.4nm dislocation. The 2nm was just a suggestion based on add 0.5nm for margin plus no digits after decimal plus keep the safety margin. The trouble with 'smashing into' is not the flight preparation on the ground, but looking at the map in flight and holes in pilots memory to remember the area in question has a different position and in which direction. 
Edited 12/12/2020 10:05:15 AM by pilot-byom
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