Catch up TV on Mighty Planes. Watch the latest and all other episodes of Mighty Planes now online, broadcast on Seven. Catch up on your favorite Seven TV show: Mighty Planes. Replay tv on its best! MIGHTY PLANES delivers unprecedented access to the planet’s most impressive aircraft with a six-episode run featuring the world’s only flying hospital, the world’s first superjumbo passenger aircraft, the world’s biggest seaplane and more of the finest aircraft humans have ever assembled… buckle up and prepare for take-off!