What happened
On 16 December 2010, at approximately 15:55 UTC, a Saab-Scania SF340B, registration G-LGNI, was performing a scheduled flight into Kirkwall Airport in the Orkney Islands. During the landing phase, the aircraft encountered significant slush covering the runway surface. This condition led to a runway excursion, where the aircraft departed the prepared surface.
The investigation
An investigation by the AAIB established the specific environmental conditions present at the time of the incident. The investigators focused on the state of the runway at Kirkwall Airport, specifically noting the presence of slush. The investigation also corrected previous documentation errors that had incorrectly identified the location as Lerwick, confirming that the incident and the runway conditions were centered at Kirkwall.