Narrative:

Started using a preprogrammed flight path. Three minutes into a fifteen minute flight; radio connection was lost with aircraft. Attempted to use 'return to home' function and manual control but aircraft would not respond. Aircraft flew beyond line of sight and has yet to be recovered.

Google
 

Original NASA ASRS Text

Title: UAV Operator reported losing radio connection with their UAV on a commercial photography mission. It has not been recovered.

Narrative: Started using a preprogrammed flight path. Three minutes into a fifteen minute flight; radio connection was lost with aircraft. Attempted to use 'return to home' function and manual control but aircraft would not respond. Aircraft flew beyond line of sight and has yet to be recovered.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.