53C52 | Tracking One More Orbit's QE11 (Difference between ground-based and sat-based data) @53C52 | Uploaded July 2019 | Updated October 2024, 1 hour ago.
Here's the difference between ground-based flight tracking and satellite-based flight tracking.

Thanks to Florence Gomer for pointing out that although the Aireon ADS-B position reports weren't included in the logs for QE11's record-breaking circumpolar flight, they were shown on FlightAware's coverage map this week.

WheresWa11y's excellent demonstration of the difference between an aircraft's actual position and the estimated position shown by online flight trackers when a flight is beyond the coverage area of their ground-based receivers... youtu.be/zolmv5AGMCU

Here are a few photos taken by the crew of the cockpit navigation display...
Over Antarctica, roughly 1,500km from the south pole at 43,000 ft. Outside air temperature -73C
twitter.com/ActionAviation0/status/1149033326998708224

About 140km from the south pole at 43,000 ft. Outside air temperature has dropped to -80C
twitter.com/ActionAviation0/status/1149249767958036480

After crossing the south pole, outside air temperature has dropped to -83C.
As confirmed by the Aireon data, they're forced to descend to warmer air.
twitter.com/ActionAviation0/status/1149250424857403392