I was wonderig is any limit excists on the percentage of contracted pilots any Irish registered airlines uses.
There is none.
This is what Irish Aviation Authority says.
"The Irish Aviation Authority’s Safety Regulatory Division is responsible for the safety of the total aviation system in Ireland, for the licensing of pilots, aircraft maintenance engineers and air traffic controllers and for the safety regulatory oversight of Irish registered aircraft, wherever they are operated.
It is responsible for ensuring that all aviation activities conducted by Irish air operators and maintenance organisations are in accordance with ICAO, EU and national requirements. In the case of airline pilots operating for an airline with an Irish AOC (Air Operators Certificate) the IAA is responsible to ensure that they are appropriately licensed and rated for the operations in which they are engaged.
The employment contracts between the pilots and the operators is outside the remit of the Irish Aviation Authority.”