Avoiding the creation of planet-warming contrails is considered one of the cheapest ways to cut aviation’s impact on the environment — but even marginal costs mount when jet fuel prices spike.
The trial was paused due to rising fuel prices, which added marginal costs to implementing climate measures.
Contrails are clouds formed by aircraft, and avoiding them is a cost-effective way to reduce aviation's environmental impact.
Higher fuel prices increase operational costs, making it difficult for airlines to invest in climate-friendly practices.
The trial's outcome could influence future regulations and practices aimed at reducing aviation's carbon footprint.