Occurrence
On July 11, 2021, an airBaltic Airbus A220-300 was operating a passenger flight from Riga, Latvia, to Copenhagen, Denmark. As the aircraft initiated its descent into Copenhagen/Kastrup Airport, the thrust levers were reduced to idle, and the autothrottle disengaged. Shortly thereafter, the R THROTTLE FAIL master caution light illuminated.
Upon touchdown, with both main landing gears on the ground, an uncommanded dual engine shutdown occurred. The aircraft was able to exit the runway, came to a full stop on a taxiway, and was subsequently towed to the gate. There were no injuries.
Investigation
The Accident Investigation Board of Denmark delegated the investigation to the Transportation Safety Board of Canada. This investigation is classified as a Class 2 investigation, indicating complexity and multiple safety issues requiring in-depth analysis. Class 2 investigations frequently result in recommendations and are typically completed within 600 days.