>>13093236the jet needs to have airflow in all configurations. during approach to landing, tail mounted engines are subject to airflow disturbance that can cause uneven thrust or loss of thrust if the nose blocks airflow to the engine intake.
jets mounted under the wing don't have that issue.
jets under the wing also won't cause catastrophic airframe failure or loss of control if the engine catches fire like one mounted under the vertical stabilizer can do.
