FSX/P3D – Gloster Meteor U Mk.16. The Gloster Meteor U Mk.16 was an unmanned target drone based on the F Mk.8. This was the second drone to be based on the Meteor, after the U Mk.15, which had been based on the F Mk.4. The first prototype U Mk.16 flew on 22 October 1956, the last U.16 conversion was made as late as 1972. This model represents Gloster Meteor U.16 WK800 ,belonging to the RAE at RAF Llanbedr.