Dublin airport's biggest customer, Ryanair,, has lodged a planning appeal against the green light for a €200 million tunnel planned for the airport.
Last month, Fingal County Council granted planning permission to airport operator, daa for the tunnel under the airport’s 'Crosswind' runway.
The planned twin cell enclosed subterranean tunnel is 700 metres long with the overall alignment being 1.1 km in length from 'ramp to ramp’.
Daa lodged the plans "to improve the safety and efficiency of the airfield".
The Council granted planning after its planner concluded that the proposed development "entails a critical airfield operational safety project".
On behalf of Ryanair, Ray Ryan of BMA Planning told Fingal County Council that "if the current underpass project is allowed to proceed, it will contribute towards an excessively high per passenger price cap and damage the recovery of Irish aviation, which depends on the cost competitiveness of Dublin airport".