WASHINGTON — Owners of many small drones and model airplanes will have to register them with the government.

The Federal Aviation Administration announced the requirement Monday in response to increasing reports of drones flying near manned aircraft and airports.

The requirement covers aircraft weighing from a half pound to 55 pounds. Drone owners who are 13 and older will have to register on an FAA website that’s available starting Dec. 21. The FAA expects parents to register for younger children.

Registration will cost $5, but the fee will be waived for the first 30 days. Owners will have to mark aircraft with an identification number.

Those who got drones before Dec. 21 must register by Feb. 19. People who buy them later must register before their first outdoor flight.