Designing and building it
producton aircraft would be something like a boeing, airbus, or even an f16 these are aircraft that are factory produced and sold to large companies.
The Airbus A 390 is the heaviest aircraft in productionThe Airbus A 390 is the heaviest aircraft in production
Voronezh Aircraft Production Association was created in 1932.
Kazan Aircraft Production Association was created in 1927.
Komsomolsk-on-Amur Aircraft Production Association was created in 1927.
The A-12 Blackbird still holds the records as the fastest production air-breathing jet aircraft.
what appropriations are used for production and modification of operational aircraft missiles and weapons
Aviation
You mean the Avro arrow project . . . . The Avro Arrow was a Canadian interceptor aircraft from the late 1950s that never went into production.
Production of aircraft
Aviation is the design, development, production, operation, and use of aircraft, especially heavier-than-air aircraft.
Aircraft Carrier production.