FlightAware ADS-B Coverage Map MLAT anomaly


#1

Last week, in MLAT Aug.30,2017 RSD047 RA-64526



This flight path is not on the Coverage Map map.
The FlightAware ADS-B Coverage Map has just been updated an hour ago (UTC 5PM, by the way this is also unusual. The map was always updated on Monday at UTC 9 AM).

Now the MLAT map looks like this in different browsers.


By the way, what period of data accumulation? Sunday - Saturday?
Because I do not see the flight of an airplane with an unusual trajectory on the Coverage Map - http://flightaware.com/live/flight/RA3737G/history/20170903/1102Z


#2

There may be a bug in the map generator that caused that data to not be included. I’ve asked the development team to investigate it further. Thanks.


#3

Thank you. The problem is solved.
20170909fix1


#4

It happened again. I do not see any changes on the Coverage Map for the second week in a row.


#5

For which aircraft are you not seeing the expected track? RA3737G is tracking with ADS-B, not MLAT, so it won’t be on the MLAT coverage map.


#6

This map was displayed from September 25 to October 11.
MLAT20170925

On October 11, the map changed, but some fragments remain
MLAT20171011


#7

The maps are updated once per week and only include data from the most recent week (as noted on the web page). It does not show cumulative coverage for all time.


#8
There will come soft rains and the smell of the ground,
And swallows circling with their shimmering sound;
And frogs in the pool singing at night,


And No change for the better happens. The weeks pass, but the artifacts on the map do not disappear.
Different browsers, different computers, different providers…
2017/X/27
20171027
2017/XI/13

P.S. Funny bug. Canada or Kazakhstan? https://flightaware.com/adsb/stats/user/VE2WMA#stats-66907
Location Source: User entered 47.53, 70.2
The user made a mistake with a minus sign. Correct coordinates 47.53, -70.2


#9

The coverage map is at best a rough estimate of coverage. What are you trying to use it for?