The association has called for urgent action on three “critical” air transport issues: uninterrupted continuation of air connectivity; the framework for regulating safety and security; and policies and processes needed for efficient border management.
“These are the most critical areas because there are no fallback agreements, such as the WTO [World Trade Organisation] framework, available in a ‘no-deal’ Brexit scenario,” said Iata director general and chief executive Alexandre de Juniac.
“Without any contingency planning being made transparent to the industry, the risks of not addressing these issues could mean chaos for travellers and interrupted supply chains. With less than six months to go, we have little more certainty than we did in June 2016.”
The call comes after the association released the findings of an Iata-commissioned study of the effects of the UK leaving the EU on airlines serving the UK.
Iata says even in the “best-case scenario”, where a Brexit transition is agreed for March 2019 onwards, a “high degree of uncertainty and risk to air services remains”.
It further warns any no-deal or “hard” Brexit scenario without a transition deal is like to lead to “significant disruption” to air services, adding the lack of transparency over contingency planning has left airlines “completely in the dark”.
“The EU and UK have a responsibility to millions of their citizens who depend on reliable air transportation,” said de Juniac. “The goal should be a comprehensive air services agreement that does not step backwards from the connectivity existing today.
“But with the possibility of a ‘no-deal’ Brexit still on the table this late in the game, it is now essential that the EU and UK civil aviation authorities plan for contingency arrangements to maintain a minimum level of connectivity, which is vital for people and for business.
“This has to be one of the most important Brexit considerations. A backstop contingency plan to keep planes flying after March must be published, and quickly.”
Below are Iata’s full warnings regarding safety and security and border management.
The safety and security framework for connectivity between the UK and EU is complex, comprehensive and deliverd world-class levels of performance on the industry’s number one priority. There can be no compromise to keeping passengers and shipments safe and secure.
Whatever Brexit scenario unfolds, Iata calls for the UK to remain in the European Aviation Safety Agency (Easa) at least as a "third country member", while Easa and the CAA should be allowed to initiate detailed technical discussions on the future relationship between the two bodies.
Mutual recognition of professional licences, standards for materials and parts, and other safety elements, should be put in place to come into effect immediately after March.
Aviation security, for both passengers and cargo, will be highly impacted in case of a no deal scenario. When it comes to recognition of security measures, all parties should work towards a deal where the status quo, is maintained.
“It is ridiculous that formal discussions on the future relationship between EASA and the UK CAA have been forbidden," said de Juniac. "This is aviation safety we are talking about – the number one priority for everyone connected with air transport and the top responsibility for governments.
"We understand the complexity of the political issues at stake. But safety and security should be non-negotiable."
A no-deal Brexit increases the likelihood of EU travellers being added to already over-long queues at UK passport control.
An alternative scenario would be to create a "third lane" which could process EU passengers more quickly. But in either scenario, investment is needed to recruit and train more staff.
The situation regarding goods is even more complex, with almost no clarity on customs arrangements. The most likely scenario, even under a transition period, is for shipments to be delayed or disrupted, as new customs procedures become established.
“Interference with the movement of people and goods will have a major and immediate knock-on impact to economic activity in both the UK and the EU," said de Juniac.
"Solutions to minimise disruption are of paramount importance. We must have clarity on future border and customs arrangements now, if we are to plan for an orderly post-Brexit situation."