Douglas A-20D Havoc
The Douglas A-20D was the designation given to a lightened version of the Havoc that would have been powered by turbo-supercharged R-2600-7 engines. It was to be fitted with large but non self-sealing fuel tanks. The aircraft did not progress beyond the design stage, partly because it was becoming increasingly clear that self-sealing fuel tanks were essential for a modern combat aircraft and partly because the Havoc was no longer seen as a potential high altitude aircraft.
How to cite this article:
Rickard, J (5 September 2008), Douglas A-20D Havoc , http://www.historyofwar.org/articles/weapons_douglas_A-20D_Havoc.html