Danish authorities have blamed the crash-landing of an SAS Bombardier Q400 aircraft Saturday in Copenhagen on a landing gear problem different from one that caused two earlier crashes.
Last weekend’s crash along with two similar SAS incidents in September caused SAS to remove the Q400 from its fleet permanently. See the crash video here.
Authorities say that a preliminary investigation shows the landing gear failure in the most recent crash was not caused by the corrosion of a bolt that led to the September crashes.
That report shows a rubber O-ring blocked an orifice in the landing gear preventing the gear from extending fully.
The twin-engine turboprop plane’s right landing gear never extended much beyond the wheelwell where it was stowed in flight, so when the plane landed, the aircraft tipped toward the right until the right wingtip struck the ground. No passengers or crew members were seriously injured.
Other airlines flying the Q400, including SeaTac’s Horizon Air,have kept their Q400s flying after the latest incident on the advice of the plane’s manufacturer. Horizon has 33 Q400s and 15 more on order.
The two previous incidents triggered a worldwide grounding of the aircraft while they underwent inspections.
Horizon canceled hundreds of flights but found no significant problems with its Q400s.