An airplane flies over repaired electrical lines in Guaynabo, Puerto Rico, Tuesday, May 29, 2018. Despite the billions plowed into the grid since Hurricane Maria hit on Sept. 20, 2017, Puerto Rican officials warn that it could take far less than a Category 4 storm like Maria to cause a blackout like the one that persists today, with some 11,820 homes and businesses still without power. (Photo by Ramon Espinosa/AP Photo)





A rainbow from a passing rain shower sits over Virgin Australia aircraft at Sydney's Airport in Australia, August 5, 2016. (Photo by Jason Reed/Reuters)





A Thai Airways Boeing 777-300ER plane takes off from Bangkok's Suvarnabhumi Airport February 23, 2015. (Photo by Chaiwat Subprasom/Reuters)





An Airbus A350-1000 takes off during its maiden flight event in Colomiers near Toulouse, Southwestern France, November 24, 2016. (Photo by Regis Duvignau/Reuters)





An EasyJet passenger aircraft makes its final approach for landing at Gatwick Airport, Britain, October 9, 2016. (Photo by Toby Melville/Reuters)





An AirAsia plane sits on the tarmac at Kuala Lumpur International Airport, Malaysia August 28, 2016. (Photo by Edgar Su/Reuters)





An aircraft of Vietnam Airlines prepares for landing at Noi Bai airport in Hanoi, Vietnam November 21, 2016. (Photo by Reuters/Kham)





The tail of a Lufthansa airplane is seen outside a Lufthansa Technik maintenance hangar at Malta International Airport outside Valletta, Malta, November 23, 2016. (Photo by Darrin Zammit Lupi/Reuters)





An Airbus A350-1000 takes off during its maiden flight event in Colomiers near Toulouse, Southwestern France, November 24, 2016. (Photo by Regis Duvignau/Reuters)





Logo of the Turkish budget airline Pegasus is pictured on the wing of an Airbus A320-200 aircraft after it took off from Sabiha Gokcen International airport in Istanbul, Turkey March 5, 2016. (Photo by Murad Sezer/Reuters)





A parked Lufthansa plane is pictured during a pilots strike of the German airline at Frankfurt airport, Germany November 29, 2016. (Photo by Ralph Orlowski/Reuters)





A Singapore Airlines Airbus A380 leaves contrails over the sky above Adelaide, Australia, November 27, 2016. (Photo by Jason Reed/Reuters)





Air Force One with United States President Barack Obama aboard departs Joint Base Andrews Maryland, U.S., December 6, 2016. (Photo by Gary Cameron/Reuters)





An Airbus A350-900 plane of Singapore Airlines, the 10,000th aircraft produced by Airbus, is seen on the tarmac shortly after its landing at Moscow's Domodedovo airport, Russia, December 15, 2016. (Photo by Maxim Shemetov/Reuters)





An Alitalia airplane takes off at the Fiumicino International airport in Rome, Italy, February 12, 2016. (Photo by Tony Gentile/Reuters)





Qatar Airways’ first flight to New Zealand flies over the city of Auckland on its final approach to the airport, February 6, 2017. (Photo by Reuters/Qatar Airways)





A plane flies above an electronic board displaying market data outiside the Tel Aviv Stock Exchange in Tel Aviv, Israel, January 29, 2017. (Photo by Baz Ratner/Reuters)





An Airbus A380 aircraft takes part in a flight display during the 48th Paris Air Show at the Le Bourget airport near Paris June 18, 2009. (Photo by Pascal Rossignol/Reuters)





An Air France Airbus A 380 is under maintenance in the Air France hangar in Roissy at Charles de Gaulle airport, near Paris, March 14, 2017. (Photo by Philippe Wojazer/Reuters)





An Embraer E-190 E2 aircraft featuring a spray painted tiger's face on the nose of the aircraft is displayed during a media preview of the Singapore Airshow February 4, 2018. (Photo by Edgar Su/Reuters)