Originally Posted by
jimf671
In both cases (DW & CN), although EMLUB had been correctly activated and was functioning correctly, a warning of EMLUB failure was indicated shortly after activation and the crews followed procedure and ditched. It subsequently turned out that there was a design fault in the warning system.
Failure of the collection of suspect parts that constituted the EM LUBE system was the only good bit of luck for AH following the shaft failures.
Chances of the aircraft making it back to land with a third of the shaft supporting bearings not present not guaranteed hence the AH flight manual requirement after the events to land immediately even with functioning EM LUBE system in the event of shaft failure if memory serves me correctly.