Fubar, ....you are wrong
I am not privvy to all the details but from what has been posted here
A 30 minute dry run requirement was not applicable to the S92 as the safety case concluded that the likelihood of lubrication failure was 'extremely remote' and was therefore correctly certified (as was allowed, no one did anything illegal, although with hindsight were the safety case conclusions wrong?), however this allowance was (probably) misunderstood and may have influenced the actions of the crew that day.
If the crew had followed the FRC actions (if I recall 'land immediately') a tragedy may have been avoided.
regarding a 'mythical' 30 minute dry run capability:
EH101 MTOW 14600 kg, 30 minute DRY RUN MGB qualified and in service.
30 minutes (not 45) is the FAA/JAA requirement and aircraft procedures are written around that.
Cocievably if a longer capability was demonstrated to the authorities satisfaction you could allow use of that greater capability
DM