Possible Clues:

• A Greek lover hides jet with jumbos
• A personal failing, with mistake finally admitted, for high-fliers
• Hurricanes perhaps advanced over Naples -- worried? Not very
• “On all sides they are guarded by masses of armed men, cannons, ____, fortifications, and the like” (Winston Churchill, on dictators)
• They fly around stormy Polar Sea, bearing north-east
• Train, please, on two-thirds of RAF jets?
• Fliers from RAF please no Liberal, having taken off loudly
• Relapse on a train - despite the ups and downs, presumably flying now!
• Relapse on a train similar to 16 down
• Chocolate trees? You could go places with them