With a cast of mostly lesser-tiered stars (Alain Delon, Robert Wagner, Eddie Albert), lousy special effects (sure, it was the 70's but "Alien" and "Star Wars" came from the same decade), and a storyline that is so laughable that one might want to cry, this is a "flight" that should have been GROUNDED.
Even Academy Award winners Cicely Tyson and George Kennedy can't keep this "bird" airborne.
The implausibility of the third film - airplane is submerged in The Bermuda Triangle - is much more believable than this turkey.
Avoid "The Concorde" at all costs!