Finnair has suspended flights to Tartu for a month to introduce an approach solution that does not require a GPS signal at Tartu airport. Previously, the approach methods at Tartu airport were GPS-based, and GPS interference in the area occasionally prevented aircraft from approaching and landing. Consequently, Finnair suspended flights between Helsinki and Tartu from April 29, to May 31, 2024.
In May, Tartu Airport updated its approach methods to allow some approaches to be conducted without a GPS signal. These renewed approaches use radio signals sent from ground stations. Such ground-based methods have been used in aviation for a long time and are unaffected by GPS interference. Similar traditional approach methods continue to serve as alternatives to GPS-based approaches at various airports.
“Estonian Air Navigation Services (EANS) has done an excellent job in implementing the alternative method. I want to thank all our partners in Estonia for solving this matter so swiftly,” said Jari Paajanen, Vice President, Operations Control at Finnair.
Finnair flies to Tartu twice a day, six days per week, with flights operated by Finnair’s partner Norra using ATR aircraft.
While GPS interference has increased noticeably since 2022, it has not impacted the safe operation of flights. Finnair’s aircraft systems detect GPS interference, and the aircraft have other navigation systems that can be used when GPS interference occurs. Finnair and Norra pilots are also well aware of GPS interference and know how to prepare for it.
