A broken bolt from a lorry, caused by metal fatigueTwo stud bolts of the Sikorsky helicopter that crashed recently off the coast of Canada broke causing first a loss in oil pressure followed by a deadly crash landing on Thursday March 12, 2009 killing 17 of 18 people on board. "I can safely say now that the stud broke in flight and the loss of oil pressure was a result of that," Mike Cunningham, the Transportation Safety Board (TSB) of Canada's lead investigator said, "So far, we cannot find any other anomaly that would account for that loss of oil pressure. There is further analysis and work to be done on exactly how and why that stud broke." Upon examination of the wreckage and seats, it was determined the helicopter landed at an acceleration of about 20g. On impact windows and doors flew off. It is not known at this time whether the victims drowned or were killed in this violent impact. The United States Federal Aviation Administration (FAA) did issue a directive to replace the titanium studs to steel studs before any Sikorsky S92 helicopters can resume flights. So far about 30\% of helicopters worldwide still need to make the update.
A broken bolt from a lorry, caused by Two stud bolts of the that off the coast of Canada broke causing first a loss in oil pressure followed by a deadly crash landing on Thursday March 12, 2009 killing 17 of 18 people on board. "I can safely say now that the stud broke in flight and the loss of oil pressure was a result of that," Mike Cunningham, the (TSB) of Canada's lead investigator said, "So far, we cannot find any other anomaly that would account for that loss of oil pressure. There is further analysis and work to be done on exactly how and why that stud broke." Upon examination of the wreckage and seats, it was determined the helicopter landed at an acceleration of about 20. On impact windows and doors flew off. It is not known at this time whether the victims drowned or were killed in this violent impact. The United States (FAA) did issue a directive to replace the titanium studs to steel studs before any Sikorsky S92 helicopters can resume flights. So far about 30\% of helicopters worldwide still need to make the update.
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metal fatigueTwo
Two
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Sikorsky helicopter that crashed recently
that
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Transportation Safety Board
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20g.
20.
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Federal Aviation Administration