Or.....did the FAA write a certification requirement that used the "extremely remote" standard and Sikorsky comply with that requirement?
I would suggest the industry learned a lesson out of this tragedy....at least we hope we did.
The real lesson learned is simply....Helicopters are different than airplanes.
Helicopters rely upon "transmissions" for more than mere propulsion....they are also "flight controls"....and "extremely remote" being an allowable failure is fatally flawed logic.
Finally.....when the Checklist clearly stated:
MGB Oil Pressure < 5psi.....Land Immediately!
Does it matter why one does not comply with the Checklist? Sikorsky correctly stated the action that SHOULD have been taken. It was right there in Black and White printed on the Checklist.
I would love to read the transcript of the radio exchange between the Flight Crew and their OPs while they were turning back and descending to a lower level and staying at cruise power upon leveling off. That would probably explain why they did what they did.
Anyone have a transcript of that handy?