Garda Air Support Unit spent over €550,000 on aircraft for seven hours
Between 2023 and 2025, the Garda Air Support Unit spent more than €550,000 on maintenance and fuel for a single surveillance aircraft that flew for roughly seven hours during that three-year period. According to figures obtained by The Irish Times via a Freedom of Information request, the fixed-wing Defender 4000 cost approximately €79,000 per operational hour before its retirement in late 2025.
Maintenance Outlays Outstrip Flight Hours for Aging Fleet
The Defender 4000, originally acquired in 1997 from British manufacturer Britten-Norman, experienced severe maintenance issues that grounded the aircraft for extended periods. Financial records show that between 2020 and 2022, the aircraft consumed €16,278 in fuel over approximately 84 hours of operation based on standard fuel burn rates. Usage dropped precipitously thereafter.
In 2023, the aircraft logged zero flight hours while generating €271,594 in maintenance expenses. The following year, maintenance costs reached €275,684 despite the aircraft recording only about five flight hours. During its final year of operations in 2025, the aircraft flew for roughly two hours at a maintenance cost of €2,639. In total, the aircraft cost €551,323 in fuel and maintenance since 2023 while recording about seven hours of active flight time. Sources indicated that the majority of those final flight hours consisted of test flights conducted by manufacturer pilots.
The operational expenses did not include the installation of advanced equipment fitted in the aircraft’s final years. These upgrades included tactical radios and a Flir Ultraforce thermal imaging camera, which sources noted saw minimal use. The Garda Air Support Unit relies on Air Corps pilots to fly its aircraft, with each mission typically carrying two gardaí for surveillance operations targeting organized crime and national security.
Fleet Replacements and Ongoing Operational Constraints
To address the capability gap left by the retired Defender, the Garda Air Support Unit acquired a Canadian-made DHC-6 Twin Otter Guardian 400 for €7 million. Designed for high-altitude intelligence gathering and long-duration surveillance, the new aircraft operates largely out of sight from the ground. Meanwhile, a separate procurement program aims to replace the unit’s two aging Eurocopter EC135 helicopters with two Airbus H145 models, with an option to purchase a third.
Operational readiness remains constrained by personnel shortages within the aviation unit. The roster currently lists only six active Air Corps pilots against an established requirement of ten. These crew deficits have frequently left Garda helicopters unavailable for night operations. Critical asset gaps were highlighted when neither helicopter was available on the night of an August 16th fatal crash on the M9 motorway near Moone, County Kildare, where a collision involving a car driven the wrong way resulted in five fatalities among teenagers and severe injuries to three women and a seven-year-old child in another vehicle.