All of a sudden, the S-92 has “interim” gear boxes?

  • They still crack – do they have run-dry capability yet?
  • What about the military version Canada bought which must have run dry?

Lots of recent coverage about ongoing problems with the S-92 main gear box and transmission housings – apparently with no end in sight.

John Croft at Flight Global cites the latest EASA and FAA emergency airworthiness directives:
“This new housing configuration is added to the applicability of this AD because it is prone to the same cracks as the [main gearbox] listed in the current AD”

http://www.flightglobal.com/articles/2010/11/30/350325/faa-easa-inspections-needed-for-interim-s-92-gearboxes.html

From the CBC: Offshore chopper problem not fixed: FAA

http://www.cbc.ca/ ewfou/ ewfoundland-labrador/story/2010/12/01/nl-faa-ad-sikorsky-1201.html

The FAA emergency airworthiness directive is here:

The EASA emergency airworthiness directive is here:

~ by deltatango44 on December 21, 2010.

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