Gremlin: "an imaginary imp jokingly said to be responsible for malfunctions in machinery... - ...with a specific interest in aircraft."
Eh, I actually though gremlins were just imps until I looked it up... Gremlins were the cause of the Skylarks crash!
EDIT: Skyward, Skylark, same thing :P
These little guys appeared in Looney Tunes and Bugs Bunny cartoons during WWII. The Ironclaw Munitions Factory Promo wallpaper even has that Gremlins from the Kremlin ambience from Looney Tunes.