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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.