Flight Chaos At Heathrow Airport After Drone Sighting, Weeks After Gatwick Shut Down

Drone sightings at Heathrow airport in London temporarily halted planes on Tuesday afternoon local time.

Flights at one of the world's busiest airports were halted for an hour due to the sighting as a "precautionary measure", the airport confirmed.

"We are responding to a drone sighting at Heathrow and are working closely with the Met Police to prevent any threat to operational safety," the airport tweeted.

"As a precautionary measure, we have stopped departures while we investigate."

Flights resumed after about an hour.

British Transport Secretary Chris Grayling said on Tuesday the military was preparing to deploy the same equipment at Heathrow.

“We are in contact with Heathrow Airport concerning the drone sighting,” he said.

“I have already spoken to both the Home Secretary and Defence Secretary and the military are preparing to deploy the equipment used at Gatwick at Heathrow quickly should it prove necessary.”

Both airports responded to the Gatwick incident by ordering military-grade anti-drone technology.

Heathrow said it was working closely with authorities including the police and looking at relevant technology to combat the threat of drones.

It comes just weeks after reported drones at Gatwick Airport affected more than 1,000 flights and 140,000 travellers shortly before Christmas.

Two people were arrested, but later released without charge.

Heathrow is the seventh busiest airport in the world, handling about 78 million passengers annually.

READ MORE: The Cities, Airlines And Flight Times Most Likely To Leave You Stranded

With Reuters.