This movie had a lot of things that I enjoy: vintage commercial airplanes, old military airplanes, radios, radar, art, drama, romance, special effects, etc. In some respects, it must have served as a template for future airliner disaster movies. I don't know why, but I really enjoyed the heavy handed use of flashbacks and scenes where there's a close-up of a character, the surrounding lights dim, and we hear the character's private thoughts. Crowded Sky might not be your cup of tea, but it certainly was mine.