The McDonnell Douglas/General Dynamics A-12 Avenger II was a proposed American attack aircraft from McDonnell Douglas and General Dynamics. It was to be an all-weather, carrier-based stealth bomber replacement for the Grumman A-6 Intruder in the United States Navy and Marine Corps. Its Avenger II name was taken from the Grumman TBF Avenger of World War II.
The development of the A-12 was troubled by cost overruns and several delays, causing questions of the program’s ability to deliver upon its objectives; these doubts led to the development program’s cancellation in 1991. The manner of its cancellation was contested through litigation until a settlement was reached in January 2014.