The Flight That Disappeared [1961 - USA] adventure sci fi

Nuclear scientist Dr. Carl Morris is en route to Washington D. C. to present plans for a super-bomb designed to devastate entire nations. Traveling with him is his research assistant, Marcia Paxton, and a young rocket-propulsion expert, Tom Endicott. The airliner won't respond to its controls and zooms upward out of the earth's atmosphere, where it comes to rest atop a cloud-shrouded plateau. While the rest of the passengers are in a trance, Morris, Paxton and Endicott are taken before a Heavenly Tribunal and judged by a Jury of the Future. They are sentenced to be suspended for all Time to ensure that their death=dealing bomb plans will be halted. But a figure known as The Sage convinces the Tribunal that prayer alone is all that can save the future.