Image copyright PA Image caption Police said the suspected drone had struck an inbound Airbus A320, similar to this one 
 
 A police investigation is under way after a passenger plane approaching Heathrow Airport flew into what is believed to have been a drone. 
 
 The British Airways flight from Geneva, with 132 passengers and five crew on board, was hit as it approached the London airport at 12:50 BST on Sunday. 
 
 If confirmed, it is thought it would be the first such incident in the UK. 
 
 BA said it would give the police "every assistance with their investigation". No arrests have been made, police say. 
 
 The Metropolitan Police said the plane was hit by the drone at about 1,700ft (580m) while flying over the area of Richmond Park, in south west London. 
 
 No debris has been found and police have asked for anyone who finds drone parts in the Richmond area to come forward. 
 
 The force's aviation security unit, based at Heathrow, is leading the investigation. 
 
 'Very real danger' 
 
 After safely landing the plane, the pilot reported an object had struck the front of the Airbus A320. 
 
 A BA spokesman said: "Our aircraft landed safely, was fully examined by our engineers and it was cleared to operate its next flight." 
 
 Chief Superintendent Martin Hendy, head of the Met's aviation policing command, said the incident highlighted "the very real dangers of reckless, negligent and some times malicious use of drones". 
 
 A Civil Aviation Authority (CAA) spokesman said it was "totally unacceptable" to fly drones - which are generally used to capture aerial film or photographs - close to airports. 
 
 Steve Landells, from the British Airline Pilots Association (Balpa), said it had been "only a matter of time before we had a drone strike". He called for greater enforcement of existing rules. 
 
 Are drones dangerous or harmless fun? 
 
 London music video drone footage draws criticism 
 
 The rules for flying domestic drones 
 
 Analysis 
 
 Image copyright PA 
 
 Leo Kelion, Technology editor 
 
 Flying a drone near an airport can already be punished with up to five years in prison, and rules also forbid flying them "beyond the direct unaided line of sight" of the operator or near buildings and crowds of people. Drones may not fly above 400ft (122m). 
 
 But the latest incident will only add to the pressure for further steps to be taken. 
 
 The US recently introduced a compulsory registration scheme so any drone recovered from an accident can be traced back to its owner. 
 
 In addition, officials could make it mandatory for drones to run geo-fencing software - that would prevent them flying in restricted areas. 
 
 The Department for Transport has promised to publish a strategy for unmanned aircraft this year. 
 
 Pilots have also called for it to fund tests into what would happen if a drone got sucked into an engine or crashed into a plane's windscreen. 
 
 Last month, the British Airline Pilots Association noted that while the threat of bird strikes had been well researched, there was little data about how much damage a drone could cause a plane. 
 
 The incident follows a warning earlier this year by the head of the International Air Transport Association Tony Tyler that drones flown by the general public are "a real and growing threat" to civilian aircraft. 
 
 The UK Air Proximity Board - which investigates near-miss incidents in UK airspace - said there had been a number of serious near-misses at UK airports involving drones. 
 
 David Black, from Blackwing Aerial Services - a company that specialises in licensed commercial drones - said education and enforcement of the current rules were important, particularly for hobbyists. 
 
 "I think a register is a good idea," he said. 
 
 "With firearms it has shown it's a good thing... but it has not stopped bad guys from getting guns. If you're going to use them as weapons, bad guys can build them themselves. 
 
 "You need enforcement, but the problem with enforcement is that it costs money and people to carry it out.... There needs to be better technology for detection and avoidance." 
 
 Geo-fencing is available in some drones - a database within the drone will not let it take off if it is near an airport so that operators cannot accidentally fly into trouble. 
 
 Mr Landells from Balpa added: "The law as it stands says you're not supposed to go above 400ft (122m) or 500m away from the base unit, depending on the drone you're using, but we've been seeing incidents up at 8,000 feet, where drones just have no place to be, so we've got to do something. 
 
 "That's a registration process, some sort of tracking, some sort of electronic security - we've got to do something about this." 
 
 Drone incidents at UK airports 
 
 Image copyright BAA 
 
 17 April 2016 - A British Airways plane approaching Heathrow is believed to have hit a drone while in midair 
 
 28 November 2015 - The pilot of an A321 plane narrowly missed a drone hovering at 100ft above a runway at Gatwick Airport 
 
 30 September 2015 - A small drone helicopter passed within 30ft of the cockpit of an A319 plane while on the approach to Heathrow 
 
 22 September 2015 - A "quadcopter-type drone" missed the right-hand side of a B777 plane by about 25m while at 2,000ft after it left Heathrow Airport 
 
 13 September 2015 - A silver drone with a "balloon-like" centre missed an E170 aircraft by about 20m, while the plane was approaching London City Airport over the Thames 
 
 13 September 2015 - A drone flew over the top of a B737 aircraft while at 4,000ft, missing it by about 5m, shortly after it left Stansted 
 
 27 August 2015 - A DO328 aircraft flew within 50ft of a drone while approaching Manchester Airport at 2,800ft 
 
 Source: The UK Airprox Board ||||| Play Facebook 
 
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 A British Airways pilot flying into London reported that a drone had struck his plane Sunday afternoon, according to police. 
 
 An object, believed to be a drone, struck the front of a plane landing at Heathrow Airport from Geneva, Switzerland, about noon (7 a.m. ET), according to London's Metropolitan Police. The flight landed safely, police said. 
 
 No arrests had been made, but the Met's Aviation Police warned that flying a drone too close to a plane is illegal. 
 
 Officers are currently speaking to a pilot who has reported a drone flying very close to his aircraft on approach to Heathrow. 1/2 CAD1 — Aviation Policing (@MPSHeathrow) April 17, 2016 
 
 2/2 This is dangerous, it is also a crime. Please be aware of the rules before you start flying a drone. https://t.co/jMiDJkJb6Y — Aviation Policing (@MPSHeathrow) April 17, 2016 
 
 Five crew members and 132 passengers were aboard the Airbus A320 at the time, British Airways spokesman Michael Johnson told NBC News. 
 
 British Airways said in a statement that the plane was inspected and cleared for the next flight. 
 
 "Safety and security are always our first priority and we will give the police every assistance with their investigation," the statement said. ||||| A drone flies over the scene of an explosion that leveled two apartment buildings in the East Harlem neighborhood of New York on March 12. (Mark Lennihan/AP) 
 
 Pilots around the United States have reported a surge in near-collisions and other dangerous encounters with small drones in the past six months at a time when the Federal Aviation Administration is gradually opening the nation’s skies to remotely controlled aircraft, according to FAA records. 
 
 Since June 1, commercial airlines, private pilots and air-traffic controllers have alerted the FAA to 25 episodes in which small drones came within a few seconds or a few feet of crashing into much larger aircraft, the records show. Many of the close calls occurred during takeoffs and landings at the nation’s busiest airports, presenting a new threat to aviation safety after decades of steady improvement in air travel. 
 
 (Related: Close encounters on rise as small drones gain in popularity) 
 
 Many of the previously unreported incident reports — released Wednesday by the FAA in response to long-standing public-records requests from The Washington Post and other news organizations — occurred near New York and Washington. 
 
 The FAA data indicates that drones are posing a much greater hazard to air traffic than previously recognized. Until Wednesday, the FAA had publicly disclosed only one other near-collision between a drone and a passenger aircraft: a March 22 incident involving a US Airways regional airliner near Tallahassee, Fla. 
 
 The newly released incident reports, however, reveal that the FAA has been receiving a steady stream of near-miss alerts from airliners and private pilots since then. 
 
 On Sept. 30, air-traffic controllers at LaGuardia Airport in New York reported that Republic Airlines Flight 6230 was “almost hit” by a brightly colored small drone at an altitude of 4,000 feet as the passenger plane was descending to land. On Sept. 8 at LaGuardia, three different regional airliners — Express Jet, Pinnacle and Chautauqua — reported “very close calls” with a drone within minutes of one another at an altitude of about 2,000 feet as they were preparing to land. 
 
 On July 29, a US Airways shuttle flight that had departed from Reagan National Airport reported an extraordinarily narrow encounter with a yellow drone with a four-foot wingspan that suddenly passed within 50 feet of the aircraft while it was approaching LaGuardia. 
 
 Outside Washington, Porter Airlines Flight 725 from Toronto was descending to Dulles International Airport at an altitude of 2,800 feet on June 29 when it reported that a black-and-silver drone zipped past, just 50 feet away. On June 1, a United Airlines flight originating from Rome alerted the control tower at Dulles that a four-engine helicopter drone interfered with its descent and passed just 100 feet underneath the Boeing 767. 
 
 The 25 near-midair collisions were among more than 175 incidents in which pilots and air-traffic controllers have reported seeing drones near airports or in restricted airspace since June. Pilots described most of the rogue drones as small, camera-equipped models that have become increasingly popular with hobbyists and photographers. 
 
 Although such drones often measure only a few feet in diameter and weigh less than 10 pounds, aviation safety experts say they could easily trigger an accident by striking another plane’s propeller or getting sucked into a jet engine. 
 
 “The potential for catastrophic damage is certainly there,” said Fred Roggero, a retired Air Force major general who was in charge of aviation safety investigations for the service and now serves as a consultant to companies seeking to fly drones commercially. 
 
 Small aircraft proliferate 
 
 The reported increase in dangerous encounters comes as the FAA is facing pressure from federal lawmakers and drone manufacturers to move more quickly to open the skies to remotely controlled aircraft. 
 
 Under a 2012 law, Congress ordered the FAA to safely integrate drones into the national airspace. The FAA is still developing regulations to make that happen, a process that is expected to take years. 
 
 Under FAA guidelines, it is legal for hobbyists to fly small drones for recreational purposes, as long as they keep them under 400 feet, at least five miles away from airports and outside other restricted areas. Flying drones for commercial purposes is largely prohibited, although the FAA has begun to issue special permits to filmmakers and other industries to operate drones on a case-by-case basis until the agency can adopt a final set of safety regulations. 
 
 The FAA, however, is struggling to keep up with an influx of cheap drones that have flooded the market. According to some estimates, half a million small drones have been sold in the United States in the past three years. 
 
 The aviation-safety agency lacks the manpower to police airports or effectively track down offenders. Only a handful of rogue drone operators have been apprehended or penalized across the country. 
 
 In a statement, the FAA acknowledged that it is now receiving about 25 reports a month from pilots who have spotted drones flying in restricted airspace or in close proximity to other aircraft. 
 
 “In partnership with federal, state and local law enforcement agencies, the FAA has identified unsafe and unauthorized [drone] operations and contacted the individual operators to educate them about how they can operate safely under current regulations and laws,” the agency said. 
 
 Previously, the only other occasion in which the FAA has released data on drone sightings near airports came in June, when The Post reported that the agency had received a total of 15 reports of risky encounters over a period of two years — or an average of fewer than one incident a month. 
 
 Asked why there had been such a large increase in reports since then, the FAA said in a statement Wednesday that the difference could be “attributed to increased awareness by pilots and the public and improved reporting and record-keeping processes.” 
 
 Pressure to open the skies 
 
 Manufacturers and businesses that want to fly drones — including real estate agents, delivery firms, photographers and farmers — have criticized the FAA for moving too slowly to develop rules of the sky for using the new technology. 
 
 They say the absence of clear regulations for certifying drone pilots and aircraft has contributed to a rise in reckless behavior by untrained drone enthusiasts. 
 
 “The reality here is that we need to have rules,” said Michael Drobac, executive director of the Small UAV Coalition, a lobbying group for firms that make drones or want to integrate them into their business operations. He said “sophisticated companies” are largely prohibited from flying drones but that hobbyists can operate them without oversight. 
 
 Among the companies that are part of the Small UAV Coalition is Amazon.com, which wants to use autonomous drones to deliver small packages to customers’ doorsteps. (Amazon chief executive Jeffrey P. Bezos also owns The Post.) 
 
 Rapid advances in technology have made small drones affordable and easy for people to fly right out of the box. Some models cost less than $500. Most come with powerful miniature cameras that can film striking video scenes while hovering over back yards, stadiums, city centers and other places previously beyond the reach of amateur photographers. 
 
 R. Lee Morris, a professional photographer in Charleston, S.C., said he began flying a small DJI Phantom drone with a GoPro camera last year and was “blown away” by its capabilities. “It’s just an incredible thing to have fun with.” 
 
 In a blog post in March, he wrote that he wanted to see how high the Phantom could fly so he tested it over the skies in a populated area in Charleston. He estimated that the Phantom rose to about 1,000 feet — more than twice as high as the FAA guidelines for hobbyists — and acknowledged that it could have caused problems for rescue helicopters or low-flying aircraft. 
 
 In an interview, Morris said he felt a little guilty afterward and removed videos of the flight from his Web site because “I didn’t want to set a bad example.” But he added that he wasn’t convinced that flying a small drone like a Phantom posed an aviation hazard. He said a pilot friend told him that if the drone struck another plane’s propeller, the remotely controlled aircraft “would just explode into a million pieces.” 
 
 ‘It was some idiot out there’ 
 
 Several pilots who reported dangerous encounters with drones to the FAA disagreed strenuously, telling The Post in interviews that the tiny aircraft can pose a menace to air safety. 
 
 Drones are not equipped with transponders to broadcast their locations in the sky, and most models are too small to show up on radar or anti-collision warning systems. By the time they become visible at high altitudes, pilots said, it is usually too late to change course. 
 
 “All it’s going to take is for one to come through a windshield to hurt some people or kill someone,” said Kyle Fortune, who was flying a four-seat Cirrus SR-22 near Medford, Ore., on Sept. 22, when he said a drone about four feet in diameter suddenly appeared 100 feet underneath his plane. 
 
 He was flying at an altitude of 4,000 feet — about 10 times higher than the FAA’s height restrictions for small drones. 
 
 “It was some idiot out there with a drone. I have no idea what he was doing up there, taking pictures or whatnot,” Fortune said. “If it had come through the cockpit it wouldn’t have been a good day.” 
 
 Mike Gilbert, chief flight instructor at Aviation Adventures, a flight school based in Manassas, Va., was flying a Cessna with a student and another passenger about 9:45 p.m. on Sept. 17 when a small drone with two red lights suddenly appeared about 200 feet overhead. 
 
 “It came seemingly out of nowhere,” Gilbert said. “As pilots, at a minimum it’s distracting. If one of them hits us, we’re coming down. We’re trained to deal with dead engines, but we’re afraid it’s going to hit a [propeller], which would be a disaster, or the airframe.” 
 
 Several other near-collisions have been reported by pilots of rescue helicopters used to transport patients needing emergency medical attention. 
 
 A Life Flight helicopter in Pottsville, Pa., reported Nov. 19 that it was descending at 2,400 feet when a flight nurse in the co-pilot seat suddenly yelled: “Watch out!” A small drone was flying straight toward the rescue helicopter “at a high rate of closure,” according to a report that the crew said it filed with the FAA. 
 
 The pilot was forced to make a sharp banking turn to the right to avoid a collision, according to the report. The crew estimated that the drone passed with about 50 to 100 feet of separation. 
 
 Greg Lynskey, government relations manager for the Association of Air Medical Services, said small drones were becoming a major concern for rescue helicopter crews around the country. He said the FAA guidelines that allow hobbyists to fly drones as long as they stay five miles away from airports are too lax and do little to protect helicopters that fly near hospitals or pick up patients at accident scenes on the ground. 
 
 “I’m hoping this can get worked out before we have a catastrophic incident,” he said. “It wouldn’t take much to bring down a helicopter. If a drone hits the tail rotor, that’d pretty much be it.” 
 
 Concerned about the potential for trouble, drone manufacturers have begun to add software upgrades to their drone operating systems to prevent them from flying near airports or above a certain altitude. 
 
 DJI, the Chinese firm that makes the popular Phantom model, now programs its drones so that they cannot take off within 1.5 miles of a major airport and must stay below 400 feet within a five-mile radius of the installation. 
 
 The default height limit in other areas is programmed at 400 feet, although owners can bypass that ceiling by downloading a software application that comes with safety warnings. 
 
 “We did start noticing one of the challenges, or opportunities, we have is to program basic safe-flying practices into the firmware,” said Michael Perry, a DJI spokesman. “We all want to see this technology safely integrated into the airspace.” ||||| Media playback is unsupported on your device Media caption Nick Beake reports on what is known about the drone incident at Heathrow 
 
 An unidentified drone came close to hitting a plane as it landed at Heathrow, the Civil Aviation Authority (CAA) has confirmed. 
 
 An Airbus A320 pilot reported seeing a helicopter-style drone as the jet was 700 feet off the ground on its approach to the runway at 1416 GMT on 22 July. 
 
 The CAA has not identified the airline or how close the drone came to the plane, which can carry 180 people. 
 
 It gave the incident an "A" rating, meaning a "serious risk of collision". 
 
 This is the highest incident rating the CAA can give. 
 
 Investigators were unable to identify the drone, which did not appear on air traffic control radar and disappeared after the encounter. 
 
 Crash warning 
 
 In May the pilot of an ATR 72 turbo-prop plane reported seeing a helicopter drone only 80 feet away as he approached Southend airport at a height of 1,500 feet. 
 
 The incidents have prompted a warning from the British Airline Pilots' Association (Balpa) that the rapid increase in the number of drones operated by amateur enthusiasts now poses "a real risk" to commercial aircraft. 
 
 The association's general secretary, Jim McAuslan said drones could cause a repeat of the "Hudson River experience", when a plane was forced to land in water in New York in 2009 after birds were sucked into its engines. 
 
 Image copyright PA 
 
 "The risk of a 10 kilogram object hitting a plane is a real one that pilots are very concerned about" he said. 
 
 "A small drone could be a risky distraction for a pilot coming into land and cause serious damage if they hit one." 
 
 Sales of drones have increased rapidly, with UK sales running at a rate of between 1,000 and 2,000 every month. 
 
 They are expected to be very popular as Christmas presents. 
 
 They cost as little as £35 for a smaller model - more advanced drones capable of carrying a high definition camera and travelling at 45 miles per hour cost almost £3,000. 
 
 Only a very small minority of people operating drones have attended training courses in how to fly them. 
 
 'Common sense' 
 
 A spokesman for the CAA said it had to depend on people using their common sense when they operated drones. 
 
 He said the current level of risk should be "kept in perspective" but warned that breaking laws governing the use of drones could potentially threaten commercial aircraft. 
 
 Image copyright PA Image caption The CAA said it had to depend on people using their common sense when they operated drones 
 
 "People using unmanned aircraft need to think, use common sense and take responsibility for them", he said. 
 
 "There are rules which have the force of law and have to be followed." 
 
 Drones may not be flown higher than 400 feet or further than 500 metres from the operator, and they must not go within 50 metres of people, vehicles or buildings. 
 
 There are exclusion zones around airports and the approaches to them for drones weighing more than seven kilograms. 
 
 Mr McAuslan said there was an urgent need for rules to be tightened before much larger unmanned cargo planes - potentially the size of a Boeing 737 - took to the skies. ||||| WASHINGTON (AP) — Pilot reports of drone sightings so far this year are more than double last year, government regulators say, raising concern about the potential for a deadly collision. 
 
 FILE - In this June 11, 2015 file photo, a hexacopter drone is flown in Cordova, Md. Pilot reports of drone sightings so far this year are more than double last year, the Federal Aviation Administration... (Associated Press) 
 
 There have been more than 650 reports this year through Aug. 9 by pilots of drones flying near manned aircraft, the Federal Aviation Administration said in a statement Thursday. There were 238 unmanned aircraft sightings in all of 2014. 
 
 The reports come from pilots of a variety of aircraft, including many large airliners. The concern is that if a drone collides with an aircraft engine, it could disable the engine much like birds do sometimes when they get chewed up by engines. Also, a high-speed collision with a drone might damage the surface of a plane, changing the airflows in a way that makes the plane difficult to maneuver. 
 
 There were 16 drone sightings reported in June 2014, and 36 the following month. This year, there were 138 reports from pilots flying up to 10,000 feet in altitude in June, and 137 reports in July. 
 
 Earlier this week, crews on four commercial flights spotted a drone while preparing to land at Newark Liberty International Airport in New Jersey. None of the pilots were required to make evasive maneuvers as a result of the sightings. The planes were between 2,000 and 3,000 feet in the air and 8 to 13 miles away from the airport. 
 
 The FAA generally restricts drone flights to beneath 400 feet and at least 5 miles from an airport. 
 
 Flying a drone "anywhere near" an airplane can bring criminal charges and fines up to $25,000, according to the FAA. 
 
 Firefighters battling wildfires in the West have been forced to ground their operations on several occasions after drones were spotted. 
 
 Suspected drones interfered with aircraft fighting at least 13 wildfires so far this year, up from four fires last year and only scattered incidents before, according to the U.S. Forest Service. Last month, crews were grounded for 20 minutes as flames spread in a wildfire that closed Interstate 15 in Southern California and destroyed numerous vehicles after five drones were sighted. 
 
 Firefighting agencies have introduced public service announcements to warn drone hobbyists, while lawmakers are seeking stiffer penalties for interfering. 
 
 The FAA said it is working closely with law enforcement to identify and investigate unauthorized drone operations. The agency has levied civil penalties for several unauthorized flights around the country, and has dozens of open enforcement cases. 
 
 "The FAA encourages the public to report unauthorized drone operations to local law enforcement and to help discourage this dangerous, illegal activity," the statement said. 
 
 Hobbyists are allowed to fly small drones, which are hardly different from model aircraft, for non-commercial purposes as long as they abide by a few rules, including keeping the aircraft within the line of sight of the operator at all times. 
 
 The FAA and the Academy of Model Aeronautics, an association for hobbyists, as well as other organizations representing the drone industry, have a publicity campaign called "Know Before You Fly" to educate drone operators on the rules. 
 
 The FAA recently passed a milestone of 1,000 permits granted to businesses to fly drones for aerial photography, to monitor pipelines and electrical transmission towers, and to inspect smokestacks, crops and the undersides of bridges, among other uses. 
 
 Congress has directed the FAA to develop rules that allow drones widespread access to U.S. skies while maintaining safety. The agency proposed rules for small drones earlier this year, and officials are optimistic they may be able to issue final rules before the end of the year. 
 
 Brian Wynee, president of the Association of Unmanned Vehicle Systems International, said "the proliferation of irresponsible (drone) flights" underscores the need for the FAA to finalize rules "and more aggressively enforce existing regulations." 
 
 But pilot and other unions have urged the agency not to move too quickly to expand drone flights. 
 
 "While there hasn't been a serious injury in any reported drone incident, there is little doubt that we should not open the skies to widespread commercial and recreational drone use — oh, and whatever those drones were doing hovering over brush fires — until we understand the challenge and fully implement enforceable safety rules," Ed Wytkind, head of the AFL-CIO's Transportation Trades Department, said in a recent statement. 
 
 ___ 
 
 Online: 
 
 Know Before You Fly — http://knowbeforeyoufly.org/ 
 
 ____ 
 
 Follow Joan Lowy on Twitter at http://www.twitter.com/AP_Joan_Lowy
– In what the UK's Civil Aviation Authority says would be "a totally unacceptable" first, a British Airways plane landing at Heathrow appears to have been hit by a drone on Sunday, the BBC reports. The Airbus A320 coming into London from Geneva had 132 passengers and five crew members aboard, a BA spokesman tells CNN; the incident was reported after the BA pilot touched down. "Our aircraft landed safely, was fully examined by our engineers and it was cleared to operate its next flight," the rep says. No arrests have been made (it's unclear whose drone it may have been), and the aviation security arm of the Metropolitan Police is looking into the matter. Police note that flying a drone too close to a plane is illegal, NBC News reports, with punishment including up to five years in prison. Specifically, drones over 15 pounds can't fly higher than 400 feet and aren't permitted to fly "beyond the direct unaided line of sight" of its operator or near crowds or buildings. Not that the incident came as a total surprise: The head of the International Air Transport Association had previously noted the "real and growing threat" of a drone-plane hit, while a British Airline Pilots Association rep says it was "only a matter of time." A recent study by Bard College's Center for the Study of the Drone underscores the danger in US airspace, with 327 "close encounters" of drones flying within 500 feet of manned aircraft between December 2013 and September 2015, and at least 28 pilots "[maneuvering] to avoid a collision with a drone." Frighteningly, aviation experts say they don't really know what would happen if a drone got sucked into a plane's engine, a Civil Aviation Authority rep tells NBC. (A drone recently came within 200 feet of a plane at LAX.)