25% of a flight's total emissions happen during takeoff and landing, which is a reason why layovers are discouraged and some airports are adopting optimized profile descents with idle engines.
A change in landing style is part of the US aviation’s effort to achieve net-zero greenhouse gas emissions by 2050, as it was outlined in the US Aviation Climate Action Plan released at a United Nations conference in 2021.
Current US production of sustainable aviation fuel is around 4.5 million gallons per year. The White House wants to up production to 3 billion gallons by 2030, in order to fully decarbonize aviation by 2050.
