As the Deputy may be aware, the oversight of safety standards at airports is a matter for the Irish Aviation Authority (IAA).
Regarding the specific question, I am informed by Shannon Airport Group that it no longer operates a section of the airfield formerly known as ‘Taxiway 11’ as a taxiway. This section of the airfield is used for aircraft parking and is referred to as ‘Parking Area 11’ which consists of a number of aircraft parking stands.
In light of IAA's responsibility for oversight of safety standards at airports, I have referred the Deputy's question to the IAA for a direct response. If you do not receive a response within 10 working days please contact my private office.