 - from burning fuel. These contribute to global warming.Emissions per kilometre travelled are significantly worse than any other form of transport.This varies considerably depending on:the size of the planehow efficient its engines arehow many passengers it carries But private jets generally produce significantly more emissions per passenger than commercial flights.There are many different models of private jet but the one flown the most often into Egypt ahead of Cop27 was the Gulfstream G650, which uses about 500 gallons (1,893 litres) of fuel per hour.If a private jet had managed to take off from Amsterdam - despite the demonstrations - it should have taken about five hours to reach Sharm el-Sheik){kind=link}
There has been criticism on social media of delegates arriving at the COP27 United Nations Climate Change Conference, in Sharm el-Sheikh, Egypt.
The day before the conference began, hundreds of environmental activists stopped private jets leaving Amsterdam’s Schiphol Airport, by sitting in front of their wheels and riding around the airfield on bicycles.
Data from FlightRadar24 shows 36 private jets landed at Sharm el-Sheikh between 4 and 6 November, the start of the summit.
A further 64 flew into Cairo, 24 of which had come from Sharm el-Sheikh.
The COP27 website says delegates should use either airport.