An aircraft having a vertical takeoff and landing flight mode and a forward flight mode, the aircraft comprising: an airframe including a first wing having first and second ends, a second wing having first and second ends, a first outboard pylon extending between the first ends of the first and second wings, a second outboard pylon extending between the second ends of the first and second wings (14, 16), a first inboard pylon extending between the first and second wings (14, 16) and a second inboard pylon extending between the first and second wings (14, 16); a distributed propulsion system attached to the airframe including a plurality of propulsion assemblies (38, 40, 46, 48); a flight control system operably associated with the distributed propulsion system and operable to independently control each of the propulsion assemblies (38, 40, 46, 48); and a pod assembly attachable to the first and second inboard pylons (22, 24); wherein, in the vertical takeoff and landing flight mode and when the pod assembly is attached to the first and second inboard pylons (22, 24), the first wing is forward of the pod assembly, the second wing is aft of the pod assembly, the first and second inboard and outboard pylons (18, 20, 22, 24) are lateral of the pod assembly, at least two of the propulsion assemblies (38, 40) are forward of the pod assembly and at least two of the propulsion assemblies (46, 48) are aft of the pod assembly; and wherein, in the forward flight mode and when the pod assembly is attached to the first and second inboard pylons (22, 24), the first wing is below the pod assembly, the second wing is above the pod assembly, the first and second inboard and outboard pylons (18, 20, 22, 24) are lateral of the pod assembly, at least two of the propulsion assemblies (38, 40) are below of the pod assembly and at least two of the propulsion assemblies (46, 48) are above of the pod assembly. an airframe including a first wing having first and second ends, a second wing having first and second ends, a first outboard pylon extending between the first ends of the first and second wings, a second outboard pylon extending between the second ends of the first and second wings (14, 16), a first inboard pylon extending between the first and second wings (14, 16) and a second inboard pylon extending between the first and second wings (14, 16); a distributed propulsion system attached to the airframe including a plurality of propulsion assemblies (38, 40, 46, 48); a flight control system operably associated with the distributed propulsion system and operable to independently control each of the propulsion assemblies (38, 40, 46, 48); and a pod assembly attachable to the first and second inboard pylons (22, 24); wherein, in the vertical takeoff and landing flight mode and when the pod assembly is attached to the first and second inboard pylons (22, 24), the first wing is forward of the pod assembly, the second wing is aft of the pod assembly, the first and second inboard and outboard pylons (18, 20, 22, 24) are lateral of the pod assembly, at least two of the propulsion assemblies (38, 40) are forward of the pod assembly and at least two of the propulsion assemblies (46, 48) are aft of the pod assembly; and wherein, in the forward flight mode and when the pod assembly is attached to the first and second inboard pylons (22, 24), the first wing is below the pod assembly, the second wing is above the pod assembly, the first and second inboard and outboard pylons (18, 20, 22, 24) are lateral of the pod assembly, at least two of the propulsion assemblies (38, 40) are below of the pod assembly and at least two of the propulsion assemblies (46, 48) are above of the pod assembly.