| General information | |
|---|---|
| Type | All-weather naval stealth bomber[1] |
| Manufacturer | McDonnell Douglas and General Dynamics |
| Status | Canceled |
| Primary users | United States NavyUnited States Marine Corps |
| Number built | 0; mockup only |

The government felt the contractors could not complete the program and instructed them to repay most of the $2 billion that had been spent on A-12 development. McDonnell Douglas and General Dynamics disputed this in Federal Claims court. The reasons and causes for the cancellation have been debated and have been an issue of controversy
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The General Dynamics/McDonnell Douglas team was selected as the winner on 13 January 1988; the rival team led by Grumman surprisingly failed to submit a final bid. The General Dynamics/McDonnell Douglas team was awarded a development contract and. The first flight was initially planned for December 1990. The A-12 was named Avenger II in homage to the World War II-era Navy torpedo-bomber Grumman TBF Avenger.
The aircraft was to be powered by two General Electric F412-D5F2 turbofan engines
n December 1990 plans were made for 14 Navy aircraft carriers to be equipped with a wing of 20 A-12s each.[