Two Ryanair passenger planes brushed against each other while taxiing on a runway at Dublin airport on Wednesday, causing some delays to departures, authorities said. No injuries were reported in the incident, which was the second such case in six months.

“The winglet of one aircraft appears to have scraped the tail fin of the other. Both aircraft were under the instruction of Dublin Airport Air Traffic Control at the time,” the company said in a statement, according to the Irish Times. "Customers have been bussed back to the terminal and will board replacement aircraft to continue their journeys to Edinburgh and Zadar.”

The company also apologized for the inconvenience caused to the passengers. The two planes were scheduled to fly to Scotland and Croatia.

In October, two other Ryanair planes, one traveling to Edinburgh in Scotland and the other heading to Charleroi in Belgium, collided at Dublin airport and the winglet of one aircraft scrapped to the tail of the other. The Air Accident Investigation Unit of the Department of Transport, Tourism and Sport launched an investigation into the incident at the time.