Major Thorpe (writer and artist), Mort Leav (pencils and inks)
Published in Jumbo Comics #69, Nov 1944 - 6 pagesA fleet of super airships (huge things that can hold several fighters and their crew, have taken off to head to the Front. One of the pilots who should have been onboard is found, indicating a spy has taken his place. ZX-5 has to parachute onto one to stop him.
Here are the pages I have of it.