I know, 9 seems very high in light of the fact that this is a low budget catastrophe movie from the 80s, but i had so much fun watching it(multiple times), so it's am earned number.
As you know, the movie is about a new commercial plane with a rocket engine as secondary propulsion system. There is an accident with a carrier rocket in Australia, and the plane ends up in orbit around earth, which it isn't build for.
Let me just point out the things i like about the movie. Hal Linden as Josh is great. He is a very believable character. Pat Corley, as Joe, the journalists technician is also a good casting member. The rest is meh at best.
The point is, that this movies has very good music, a lot of scenes with real suspense and in addition the rescue attempts, while not 100% realistic, are innovative, and fun to watch. Also there are a lot of good jokes in this movie. Josh is great, Joe too, and Joshs wife is also a strong character.
The thing that a lot of reviewers seemingly miss, are the messages in this movie. There is greed, witch leads to this catastrophe in the first place, cold number-crunching on one side, and the value of human live on the other. Also the notion never to give up is a big part of this movie. One thing, that can't be overstated is, that these people keep their calms. They don't scream all the time, they don't behave like children, and they don't behave like animals in fear. While this may not be realistic, it is nerve soothing to say the least. Most catastrophe movies are full with it, making them hard to watch, screeching on my nerves like fingernails on a blackboard. This is not the case here. The passengers don't sabotage their own rescue by behaving stupid. At least most of the time.
Lets just say the movie never gets boring, and if you can overlook the wooden performances of Lee Majors and Sandra Hutton, than you can expect a fun movie with lots of suspension
I urge you to find this movie, and have a great time watching it.