Crikey 'Biggles - adventures in time' there's a blast from the past...
Remember being excited as a nipper that Biggles film was coming out and then being utterly let-down by it - time travel? sound weapons? Flying a Bell 206 with no type rating? EH??
What was nuts about this was the source material (discounting the lack of love interest apart from the Marta Hari-style spy who breaks Biggles' heart) is rich enough anyway... messenger pigeons that go through the prop, ghostly empty aircraft landing themselves, decoy 'sitters' that have to be dealt with, (and comrades avenged), plus dropping off enemy agents behind enemy lines... And thats just the stuff off the top of my head I can recall.
Add in some of the 'stranger than fiction' REAL stuff that happened (eg Louis Strange hanging on to a jammed Lewis upside down) and done properly it'd be a corker....