Police drones are falling from the sky when it rains, report finds

A report found that DJI "Matrice 200" series drones were malfunctioning due to "technical failures."

London (CNN)Drones used by UK police forces are falling out of the sky when it rains, a report by the country's Air Accidents Investigation Branch has found.

Last year, 16 "Matrice 200" series drones produced by Chinese manufacturer DJI crashed due to "technical failures," the report, released Thursday, found.
It notes that in some instances the drones were being used by UK police forces and emergency services at the time of the crashes.
    On its website, DJI describes the drones, which weigh 8 pounds and measure just under 28 inches, as "built to endure" strong winds and sub-zero temperatures.
    "The new dual-battery power system automatically heats batteries when flying in sub-zero temperatures, while an enclosed design ensures weather and water resistance, so you can fly in a wide range of environments," DJI says on its website.
    However, according to the AAIB, "the DJI Matrice 200 series aircraft crashed whilst operating in rain."
    "Failures of the Matrice 200 series aircraft resulted in a loss of power and control, with the aircraft typically falling vertically to the ground," the AAIB found.
    "This poses a risk of injury to people on the ground which is not mitigated by the current UK regulations or published guidance material applicable to operating an unmanned aircraft system," it added.