 The data from this flight were recognised by the Fédération Aéronautique Internationale as a world record of 49,967 ft (15,230 m).After this flight, further development work resulted in a number of small modifications to the aircraft, the typical objective of these being weight savings and improving the performance of the supercharger.In this mildly revised form, the Type 138A conducted six further flights, during which a maximum altitude of around 50,000 ft (15,240 m).