A method for opening/closing an aircraft electric door for a pressurized airframe, passenger or service door, in which it consists, driven by a single electric motor controlled by a door computer: - for opening the door, after disarming a toboggan, of successively linking the sequential phases of unlocking, lifting and pivoting the door by - unlocking a safety catch (43, 4a, 4b) of the door by releasing locking means (41, 42, 44) of a locking system; - electrically lifting the door with a door arm hinged on a vertical hinge mounted on the door, and, driven by the electric motor, with mechanically forced guidance along the vertical axis (Z'Z) by preventing a horizontal rotational drive along the same axis (Z'Z); - releasing a horizontal guideway when the vertical guideway comes against the stop, then pivoting the door arm on a horizontal guideway along a cylindrical surface (50, 501, 502) of a vertical axis (Z'Z) of rotation adapted to disengage the door along the external aircraft fuselage; - for closing the door, of rotating the door arm and the door in the reverse direction to that for opening, by horizontal guidance along the cylindrical surface, to stop the horizontal guidance for pivoting the door arm when this guidance comes to the stop, then of lowering the door arm and the door, with mechanically forced guidance along the vertical axis (Z'Z) by preventing the rotational drive. - for opening the door, after disarming a toboggan, of successively linking the sequential phases of unlocking, lifting and pivoting the door by - unlocking a safety catch (43, 4a, 4b) of the door by releasing locking means (41, 42, 44) of a locking system; - electrically lifting the door with a door arm hinged on a vertical hinge mounted on the door, and, driven by the electric motor, with mechanically forced guidance along the vertical axis (Z'Z) by preventing a horizontal rotational drive along the same axis (Z'Z); - releasing a horizontal guideway when the vertical guideway comes against the stop, then pivoting the door arm on a horizontal guideway along a cylindrical surface (50, 501, 502) of a vertical axis (Z'Z) of rotation adapted to disengage the door along the external aircraft fuselage; - unlocking a safety catch (43, 4a, 4b) of the door by releasing locking means (41, 42, 44) of a locking system; - electrically lifting the door with a door arm hinged on a vertical hinge mounted on the door, and, driven by the electric motor, with mechanically forced guidance along the vertical axis (Z'Z) by preventing a horizontal rotational drive along the same axis (Z'Z); - releasing a horizontal guideway when the vertical guideway comes against the stop, then pivoting the door arm on a horizontal guideway along a cylindrical surface (50, 501, 502) of a vertical axis (Z'Z) of rotation adapted to disengage the door along the external aircraft fuselage; - for closing the door, of rotating the door arm and the door in the reverse direction to that for opening, by horizontal guidance along the cylindrical surface, to stop the horizontal guidance for pivoting the door arm when this guidance comes to the stop, then of lowering the door arm and the door, with mechanically forced guidance along the vertical axis (Z'Z) by preventing the rotational drive.