Harry flew a Firefly training plane for about 30 minutes before making a copybook landing at the RAF Barkston strip.
Harry, 24 looked in complete command during the flight, and appeared calm and composed after he touched down, The Sun reported.
"Flying solo is a daunting prospect for every new pilot. But Harry had no problems," sources said.
Harry's flight came as it emerged he struggled for weeks to pass a crucial mathematics test he flunked.
Harry, who is aiming to become a helicopter pilot, would be moving to RAF Shawbury, Shrops, for his advance training in May. (ANI)