Abstract: A door and latch sequencing mechanism includes a door member 10 hingedly mounted along one edge to an aperture defined by body walls 12, for movement between open and closed positions. The door member 10 pivotally carries a latch 13 for movement between latched and unlatched positions. A crank member 16 turnable about a fixed axis is connected by a first connecting rod 18 to the door member and by a contracting linkage 19, 20, 21 to the latch member. The first connecting rod, contracting linkage and crank member are arranged so that turning of the crank member in the appropriate single sense sequentially(a) maintains the door member in its closed position or moves it to a temporary position remote from the open position,(b) unlatches the latch, and(c) opens the door member.