Dronemaker DJI has warned that some of its unmanned aerial vehicles suddenly fall from the sky during the flight.
The company claims there has been a "small number" of reports about its Matrice 200 drones where a power problem causes a crash during the flight.
However, the warning has prompted the British police to ground some of their drones.
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According to DJI, there were a "small number" of reports about his Matrizen-200 drones (picture), in which a voltage problem in the middle of the flight crashes
The British Aviation Authority (Civil Aviation Authority) announced in a safety note that some 200 drone models lost power during the flight and dropped straight down.
In one case, a drone experienced a problem during the flight and landed on the roof of a commercial building.
Not long after, DJI issued an opinion on the problem.
"DJI is aware of a small number of reports about Matrice 200 series drones that have lost power during the flight," DJI said in a statement.
"Flight safety and reliability of the products have the highest priority. Our engineers thoroughly review every case and work to address this issue urgently. "
The company added that it checks its products for "thousands of hours" and most users have "minimal disruptions".
The British Civil Aviation Authority also issued a safety notice stating that about 200 drone models lost their performance during the flight and dropped straight down
DJI said it is looking for new protection mechanisms for users. In the meantime, the user suggests updating the firmware for their drones and batteries using the DJI app.
In addition, a DJI spokesman Gizmodo said the company did not know how many drones were affected by the problem.
The company suspects that it could be a "power problem".
DJI's Matrice drones are larger than typical consumer drones, weigh in at over £ 11 and feature 17-inch propellers.
The civil aviation authority's report released on Friday described a "small number of incidents" in which the drone lost power completely during the flight, "although there are indications that there was still enough battery time."
WHAT HAPPENS WHEN A DRONE COLLIDES WITH A PLANE
Scientists at the University of Dayton Research Institute hurled a DJI Phantom 4 drone from a cannon into the sky to see what would happen if it collided with a Mooney M20 aircraft.
They worked to mimic a collision between a drone and a plane in the air at a speed of 238 miles per hour.
They shot the drone with a steel cannon with a 12-inch hole in the air.
Within three-hundredths of a second, the drone hit the wing of the plane.
The University of Dayton Research Institute threw a DJI Phantom 4 drone from a cannon into the sky to see what would happen if it collided with a Mooney M20 aircraft
While many might think that the drone would be destroyed on impact, it actually ripped open the plane.
The drone's fast-spinning propellers eventually ripped through the wing of the aircraft, damaging the main gap.
For comparative purposes, the researchers also fired a similarly weighted gel "bird" into another part of the wing to see what effect this would have.
The University of Dayton recorded the crash with a camera at 10,000 frames per second.
They hope to be able to carry out additional tests with similar and larger drones on other aerospace structures including windscreens and engines to show how catastrophic drone collisions can be.
"In any case, this caused the plane to fall directly to the ground due to the immediate loss of lift, as the remote pilot was unable to control his subsequent flight path," the report said.
"The small unmanned aerial vehicles (SUA) were damaged on impact, but the CAA has not received any reports of personal injury or property damage."
Then it is said that the drones should not be flown at any height above the people until further notice.
It is also forbidden to fly drones at a distance of less than 100 meters from persons, ships, vehicles or buildings.