Delivering the ride of a lifetime, Discovery’s popular original Canadian series MIGHTY PLANES returns for Season 4, airing Sundays at 7 p.m. ET/4 p.m. Viewers are welcome aboard unique aircraft in the six-part season, flying through tumultuous conditions, executing life-saving jobs, and boasting the most environmentally friendly engineering. Pilots, engineers, avionics specialists, load masters, and ground operators share their stories through spectacular HD footage.