Only Practical Way
Dangermouse,
I think the operative paragraph in that article is:
"The FAA’s response reiterated its requirement that the MGB must be able to run for at least 30 minutes with a loss of lubricating oil, “unless a lubrication failure resulting in a loss of lubrication is determined to be ‘extremely remote.’”"
I'm a bit remote from the specifics of what is going on daily with the S-92 program( been retired 7 years come January ) but if the FAA didn't concur that the gearbox changes were in compliance, one would assume they would pull the certification. Ergo...
Thanks,
John Dixson