During the week of 8th - 10th June 2015, DroneSurv were commissioned to undertake a UAV derived photogrammetric survey of the NE Buttress of Gibraltar for Golder Associates.
What was particularly challenging about this project was the CAA imposed flight height of 400 feet (~120m) above take-off location. This meant that the top of the buttress at 425m would be impossible to photograph and so impossible to model. It was with great pleasure (and immense relief once the flights were concluded) that DroneSurv was able to obtain a special permission from the Director of Civil Aviation (DCA) in Gibraltar to fly an Extended Visual Line Of Sight (EVLOS) operation to fly to a height of 1,000 feet. This required the attendance of both our BNUCs certified UAV Pilots (one on the mountain and one at the take-off location at the base of the mountain) and the issuing of a Notice to Airmen (NOTAM). The flight and the resultant model was a huge success and only possible through thorough planning and diligent execution. The video can be seen under "What we do"/"videos" on this website or on our Youtube Channel at https://youtu.be/zM4KTKK0F9g