A fire erupted, engulfing the wings, rear fuselage and empennage. The right wing, empennage, left wing, parts of the fuselage and two engines separated. Each fuselage has its own empennage. The aircraft has a T-tail empennage and area rule fuselage contouring. Yakovlev handled design and manufacturing of the forward fuselage and empennage. The fuselage is limited to 15,000 hr while the wing and empennage have 20,000-hr. In addition, the blend between the fuselage and the empennage was all new. Propulsion is provided by a propeller driven by a pusher engine mounted at the empennage. It also put the rudder empennage clear of interference from the exhaust. Propulsion is provided by a three-blade propeller driven by a pusher engine mounted on empennage. The conventional layout of an aircraft has wings ahead of the empennage. Most designs were based on straight wings with extended empennage and stabilizers. Conventional aircraft layout have a rear tail (empennage) for stabilization and control. The empennage (tail assembly) featured relatively small and well-balanced horizontal and vertical surfaces. These are also known as the vertical tail, and are part of an aircraft's empennage.