Question to the Department for Transport:

To ask the Secretary of State for Transport, whether he plans to take steps in response to the British Airline Pilots’ Association call for a comprehensive research trial into the (a) potential effect of aviation induced cloudiness on the environment and (b) effectiveness of proposed mitigation methods.

The latest research on the impacts of non-carbon dioxide aircraft emissions suggests that there remain significant uncertainties on their impact on the environment, and the effectiveness of proposed mitigation methods. However, the Government will continue to consider the research as it progresses.