"Landing Gear Issues
On 12 September 2007, Bombardier recommended all Q400s with over 10,000 landings to be grounded for inspection of their landing gear after two non-fatal accidents within 3 days involving the landing gear of a Q400 series aircraft. Both aircraft operated by Scandinavian Airlines, who were an early operator of the type.[6] This affects about 60 aircraft in total, out of a total of 140 Q400s in service. Totally seven Q400s have had landing gear failures while landing during 2007: four in Denmark, one in Germany, one in Japan, one in Lithuania and one in South Korea.
Following the latest incident at Copenhagen Airport, October 27th, Scandinavian Airlines System (SAS)'s executive board decided to cease operation of the Q-400 model, fearing for customers' safety".