I remember watching it as a child and I liked it. Can't quite remember that much about it. What I do recall is a scene.. like a cargo hanger of some sort.. and there's this little boy who somehow gets onto a spaceship. The crew protects him throughout the movie and is ordered by the captain of the ship to do so for some reason I can't recall and in another scene one of the crew gets killed in some sort of elevator protecting this child.

Space Raiders (http://www.imdb.com/title/tt0086345/)?

The closest thing I can think of is flight of the navigator. Sorry, I'm new here, I don't know how to link.