The Iridium Next satellite constellation is new. SpaceX just launched the final 10 satellites in January 2019. Even if MH370 had their transponders turned on,

The Iridium Next satellite constellation is new. SpaceX just launched the final 10 satellites in January 2019. Even if MH370 had their transponders turned on, it wouldn't have helped. https://www.cnbc.com/2019/03/14/iridium-aireon-satellites-gave-faa-key-data-in-737-max-investigation.html https://www.cnbc.com/2019/03/14/iridium-aireon-satellites-ga...