The Australian airline Qantas has conducted a test of the longest non-stop commercial passenger flight to investigate how the journey could affect pilots, crew and passengers.
The Boeing 787-9 with 49 people on board took 19 hours and 16 minutes to fly from New York to Sydney, a distance of 16,200 km.
Next month, the company plans to test a nonstop flight from London to Sydney.
Qantas anticipates Decide if the routes should start by the end of 2019.
If they continue, the services will be operational in 2022 or 2023.
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No airliner yet has the range to fly such an ultralong route with full passenger and cargo load, reports the Reuters news agency.
To give the aircraft sufficient fuel range to avoid refueling, the Qantas flight started with maximum fuel, limited baggage load and no cargo.
Passengers set their clocks after boarding for Sydney and were kept awake until nightfall in Eastern Australia to reduce their jet lag.
Six hours later they were served a carbohydrate-rich meal and the lights were dimmed to encourage them to sleep.
On board, the pilot's brainwaves, melatonin levels and alertness, as well as passenger training sessions, were monitored and the effects of crossing so many time zones on the human body were analyzed.
"This is really a This is hopefully a preview of a regular air service that will accelerate the journey from one side of the world to another," said Alan Joyce, CEO of Qantas Group.
Competition in ultra-long haul aviation The market has intensified in recent years as various airlines fly longer distances.
Singapore Airlines launched an almost 19-hour journey from Singapore to New York last year, which is currently the world's longest regular transport service.
Also last year, Qantas launched a 17-hour non-stop connection from Perth to London, while Qatar Airways operates a 17.5-hour connection between Auckland and Doha.