It's not broken off just missing. I don't know if it's easy to locate the piece but maybe if yours has broken or missing parts this might help. Everything works on it the launchers are good. The deck is free of marks and scratches and the loading decks move freely and stay in place.
eBay
Complete 2003 Hasbro Micro Machines C-7 Air Cargo Carrier playset including original box, instruction sheet, cargo plane, military tank, and transport truck. Plane appears complete and displays well with working moving parts and propellers. Includes original packaging and paperwork. Toy has been played with and the box shows shelf/storage wear with some sticker peeling around the edges and light wear from age/use. See photos for exact condition and contents.
eBay
Used see pictures for condition You will get everything pictured
eBay
Aircraft Carrier, Micro Machines Galoob 1988 used. Condition is "Used". Shipped with USPS First Class. Planes not included Christmas birthday present rare mint vintage gift boy usa ww2 Airplane
eBay
Micro Machines Galoob INCOMPLETE 1988 Sea Hawk Aircraft Carrier. Condition is Used. Shipped with USPS Ground Advantage.
eBay