GPS worked fine all the way from Australia to Hawaii

This video shows my Bad Elf Pro GPS recorded a seamless log of the flight from Sydney to Hawaii. GPS works fine everywhere.

It seems many people are confusing the information they see on flight trackers like FlightAware and Flight Radar. These trackers can rely on ground based installations that receive information from the Aircraft, Radar and ADS-B. When the aircraft flies out of range of a ground station it will appear to "drop off the radar" on these simple flight trackers. The GPS is a one way system that provides location information to the aircraft and pilot. It has no tracking capability at all.

GPS works fine everywhere in the world.

Space Based ADS-B Coverage

Flight tracking systems like FlightAware and FlightRadar24 use the ADS-B system of aircrafts to track their locations. This system requires clear line of sight, so the trackers loose the signals of airplanes after they vanish behind the curvature horizon. This is why some aircrafts vanish from the screen of the flight trackers.

Space based ADS-B will close the gap and and use satellites to relay the positions sent by the ADS-B transmitters of aircrafts to the ground stations.

See also: FlightRadar24 Satellite based aircraft tracking now available to all users

FlightRadar24 Satellite based aircraft tracking now available to all users

As the first flight tracking service to integrate satellite-based ADS-B into a public platform in 2016, we’re proud to announce we’re also the first to make space-based ADS-B data available to all users. All our users will see most flights tracked via satellite and we also offer additional specialized space-based tracking data for our professional customers.

Radarbox gives access to older flights for non-registered users.

See also: Space Based ADS-B Coverage

Non Stop Dallas USA to Sydney Australia, GPS works everywhere

I flew back to Australia last night as a passenger with Qantas. I had requested an upper deck window seat and purchased a second GPS and a magnetic compass to conduct more analysis during the flight. I copied the filed flight plan into my Foreflight App so I could follow the route accurately. (If you sign into FlightAware you can see the filed plans for each flight). The magnetic compass is totally unreliable inside the cabin.

Both Bad Elf GPS units worked flawlessly from the USA to Australia. Even in the middle of the Pacific Ocean crossing the Equator.