I work for an oil and gas company. We have several large modern helicopters contracted to fly our workforce offshore, up to 16 passengers at a time, 250nm offshore in tropical weather. We have a Honeywell satellite tracking system fitted to every helicopter. It transmits LAT/LONG, HDG, ALT and GS at 2 minute intervals and shows the track of the flight as a crawling icon. I can track flights in real time from any PC.