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Investigators find broken mounting stud on helicopter that crashed off N.L.

<span id="AssetWebPart1_ctl00___BodyLineup__"><p>Investigators found a broken mounting stud on themain gearbox filter bowl of a helicopter that crashed in the NorthAtlantic last week, prompting the Federal Aviation Administration toissue a directive to change a part before Sikorsky S-92A choppers canfly again.</p></span>


ST. JOHN'S, N.L. - Investigators found a broken mounting stud on the
main gearbox filter bowl of a helicopter that crashed in the North
Atlantic last week, prompting the Federal Aviation Administration to
issue a directive to change a part before Sikorsky S-92A choppers can
fly again.

The Transportation Safety Board of Canada says the
FAA in the United States is issuing an emergency airworthiness
directive stipulating that all operators of the Sikorsky helicopter
must install improved steel mounting studs, replacing titanium studs.

Sikorsky Aircraft Corp. issued a service bulletin on
Jan. 28 indicating the studs should be replaced and that the
modification should be accomplished within the next 1,250 flight hours
or within a year of the bulletin being issued.


Friday's directive requires operators of the helicopters to make the change before conducting further flights.

Only one person of the 18 on board Cougar Flight 491
survived on March 12 when the chopper crashed into Atlantic Ocean,
about 65 kilometres southeast of St. John's, on its way to two offshore
oil platforms.

 
 
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