I applied through a recruiter. The process took 5 months. I interviewed at daa (Dublin, Dublin) in Mar 2015
Interview
First stage was an online test for numeracy/literacy and personality profiling.
Then I had a telephone "technical" interview.
Beforehand, I was sent a spreadsheet of flight data and asked to create a short presentation of the main findings (5 key points), following some analysis.
The next stage was an interview with a panel, which was just the usual competency-based questions.
Interview questions [1]
Question 1
Analyse the flight data and prepare a 10min presentation indicating the key observations.