Abstract: The specification discloses a modular transportation seating assembly that includes a support frame and seats mounted on the frame. The frame includes a seat beam and a cantilever beam. The cantilever beam includes a body and a connector inserted into the body and held together by compressive force. The body has an end defining a plurality of receivers, and the connector includes a plurality of lugs each received within one of said receivers. The seat beam includes a body, a tee nut slidably received within the body, a second connector outside the body, and a fastener intersecuring the two connectors to retain them in position along the length of the body. A single fastener intersecures the connectors on the seat beam and the cantilever beam. The seat includes a flange hooked about the back edge of the seat beam and one or more fasteners connecting the seat to the forward edge of the seat beam.