The Transportation Safety Board team investigating the crash of a Sikorsky S-92 found a broken titanium bolt in the aircraft’s main gearbox filter bowl assembly. (link includes picture of filter assembly)
The broken bolt would reportedly cause oil to leak from the gearbox.
In January 2009, Sikorsky alerted all operators of S-92s to the need to replace the titanium bolts with steel ones within 12 months or 1250 flying hours, whichever came first.
The crashed S-92 had not undergone that bolt replacement.
The United States Federal Aviation Administration is expected to issue an emergency airworthiness directive for the type, effectively grounding all S-92s worldwide until the the titanium bolts are replaced with steel ones.
Just a second, there update: A spokesperson for the FAA said the agency hasn’t decided when, how and what type of directive it may issue. The bolt may have broken during the crash or during the recovery operation.
-srbp-
7 comments:
That explains the Mayday call about oil pressure failure in the transmission.
Pretty much, Mound of Sound.
The TSB investigation should be able to explain pretty well everything that occured. Unfortunately, there'll still be a lot of rumour and spec caused by people who didn't have accurate information, weren't prepared to wait for accurate information or who spouted off despite having accurate information.
This wouldn't have happened with Danny approved survival suits.
Intense structural damage was mentioned to the main cabin area, and the rear door was said to have come off. I doubt if the poor souls died from exposure..? More like g-shock and blunt trauma I would think. Survival suits may be worth their weight in gold, however, your comment has the uneasy feel of a politically motivated statement? Using this tragic event to leverage your position on the matter of survival suits really would be beneath contempt.
@ algansk:
If you are going to make a claim like that you'll have to make it a little plainer:
a. who you are referring to and
b. what you mean by politically motivated.
@ Anonymous 2104
The foul language wins a trip to the bin.
congrats.
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