The "F.P." could stand for floating platform, or for fluffy production - take your pick. Essentially, although loosely themed on an innovative construction in the Atlantic that could facilitate transcontinental air travel, it's really just a thinly veiled melodrama that pitches the test pilot Conrad Veidt ("Ellison") and Leslie Fenton ("Capt. Droste") who designed this floating airport into a battle for the affections of "Claire" (Jill Esmond) who owns much of it. Add a little potentially destructive espionage to the mix and we've got our story. Karl Hartl could have done more with the science of the story for me. The love triangle element is a bit dull and though faintly comedic at times, just cluttered up what could have been a enjoyable fantasy that might even border on the plausible. The acting is acceptable, but none of the characters really take flight (no pun intended). Made, simultaneously, in three languages which might be it's single claim to fame - otherwise, it's sadly just average fayre for an afternoon's gander on the telly.
