The police drone had a “near-miss” with a fighter jet that travels at 520mph (836km/h), a report has revealed.
The drone operator “honestly believed” the two collide in mid-air, according to the UK Airprox Board.
He said that the risk of a crash above Throwleigh, Devon, is “high” state, but the officer had lowered the drone quickly.
Devon and Cornwall Police said it had notified Airprox, which was “content that there was no guilt, nor lessons to learn”.
The drone was flying at an altitude of about 300 feet (90 meters), on 16 January, according to the report.
Other stories of Devon
“The jet came in view from right to left, and seemed to pass by the drone at the same altitude; it seemed that the jet is within 200 metres of the side of the drone.
“Once the jet was in sight and started banking to the right and [operator] honestly believed that he was going to collide with the drone.
“The jet continued and was followed a few seconds later by a second jet.”
The F-15 pilot, which was flying at an altitude of 500 feet (152m), could not see the drone, the report added.
The council said the case had given rise to discussions on the fact that the service that helps the military plan routes through UK airspace should integrate information from other sources.
Devon and Cornwall Police has established the UK’s first permanent drone units in 2017.
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