Was the QFE Set Incorrectly on the Altimeter Over the Potomac?

A hand-drawn diagram shows a helicopter flight path from John F. Kennedy Airport to a TWA Hotel, illustrating how a barometric altimeter set to QFE at Davison AAF (74' MSL) causes the helicopter to read 204' agl over the Potomac River (0' MSL) while the pilot thinks they are at 200' agl, leading to a crash. The diagram includes annotations like 'RADAR ALT 278'agl', 'BAROMETRIC ALT 204'', and 'Helicopter driver thought they were at 200'.

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