There was a commando style comic with a very similar idea. German spy posing as dutch lancaster pilot, orders crew to bale out over germany on raid, everyone does apart from stroppy rear gunner who had rescued crew on previous crash landing. Spy Pilot shoots rear gunner, leaves him for dead, flies to secret lutwaffe base. Meanwhile rear gunner regains consciousness and bales out.
Lanc modified with 20mm guns in turrets, "sparkle" paintjob, and spy pilot "volunteered" to fly with luftwaffe crew. Proceed through bomber stream, shooting down stray lancs by formating to port or starboard and letting loose with hefty dose of cannon fire. Sparkly paint supposed to represent plane as a "ghost"
Ghost lanc (that could have even been title i think) gets shot up by ME110 G halfway through story, but lanc and pilot survive. Meanwhile rear gunner gets back to blighty, and makes a report.
Cue showdown, where rear gunners plane gets attacked and evades, leads ghost plane into middle of bomber stream and rest of formation riddles german lanc. Good riddance to the dirty spy.
Actually it was not too bad and the art work was pretty good if i remember correctly. Must have been a commando comic, their art was always better than battle comics in my opinion.
Anyway, apologies for being a bit of an anorak.
Scotty