Dublin Airport operator daa has said it is carrying out an internal review following an incident on Monday in which a man without a boarding pass "barged past" Aer Lingus staff and boarded a flight.
Aer Lingus said the man, aged in his 40s, forced his way past airline boarding agents at the gate when trying to board the 7.05pm flight to Birmingham.
He then made his way past the crew at the door of the aircraft, before taking a seat on board.
The Airport Police Service was immediately alerted to the incident and subsequently removed the man.
He had managed to make his way through security screening at Terminal 2 without the relevant documentation on route to the flight.
The incident was initially reported in today's Irish Independent.
In a statement, daa said it noted the "speedy" apprehension of the man, who was arrested by gardaí after he was removed from the plane.
He was subsequently charged with trespassing offences and appeared at the Criminal Courts of Justice yesterday.
"We note the speedy apprehension of the individual in this case by Airport Police, who was caught trespassing without a boarding card after being security screened, and his subsequent arrest by An Garda Síochána and successful prosecution before the courts," daa said.
"As with any such incident an internal review is under way."
Breach could result in increased spot checks
An airport security and safety auditor has said that as a result of the incident, there might be an increase in the number of random spot checks ahead.
Retired Air Corps Lieutenant Colonel Kevin Byrne said he was "astounded" the man managed to get past security gates and then board the flight.
"I'm still concerned as to how he got as far as the boarding gate and had the intention of getting on the aircraft. You don't know what kind of equipment they're carrying. What their intention might be," he said.
Speaking on RTÉ's Today with Claire Byrne, Mr Byrne added there are fundamental rules and regulations that need to be adhered to in order to get from the landside to airside areas of the airport.
He asked if the man in question had a boarding pass of any kind, and if he was screened through security in the normal way.
Mr Byrne added that he hoped this was an isolated incident and would not occur again because the airport "cannot afford the damage before the summer".
"We cannot afford to have these types of security breaches," Mr Byrne said, adding that measures must be put in place to ensure this does not happen again.
