Photo: Shutterstock On Monday evening (September 7), Dublin Airport warned travelers and local residents not to be alarmed if they notice unusual flight paths over the airport "during the next four nights."
The airport said mandatory checks of its Instrument Landing Systems (ILS) will take place overnight, creating flight tracks that may look unusual compared with normal operations.
Dublin Airport. Photo: ShutterstockThe checks will be carried out at various times between 11pm and 6am using a small twin-engine aircraft. Dublin Airport says the testing is required under European Union regulations and is carried out twice a year for safety reasons.
Instrument Landing Systems are an important part of airport operations, helping guide pilots during the approach and landing phase of a flight, particularly when visibility or weather conditions make visual approaches more difficult.
During the testing period, residents and passengers monitoring aircraft tracking websites may therefore see the aircraft following repeated or unexpected routes around Dublin Airport.
The airport stressed that these unusual flight patterns are part of routine safety checks and do not indicate an aviation emergency or disruption.
The overnight timing allows the airport to carry out the required testing while limiting its impact on normal daytime flight operations.
Dublin Airport has asked people who notice the unusual tracks over the coming nights not to be concerned, explaining that the aircraft is being used specifically to verify that the airport’s landing guidance systems are operating correctly.
The checks are part of the airport’s regular safety programme, with similar testing carried out twice each year.