The UK Air Accidents Investigation Branch (AAIB) has explained why the emergency lubrication system sent a “failure” warning–while working nominally–to the crews of the two Eurocopter EC225s that ditched in the North Sea last year.
Lubrication
March 4, 2012 - 1:40am
The FAA is moving to redefine what “extremely remote” means when it comes to Part 29 certification provisions regarding loss of helicopter gearbox lubrication. The S-92 originally gained certification after Sikorsky convinced the FAA that complete loss of lubrication was extremely remote. Failure of the main rotor gearbox lubrication system is blamed for the fatal ditching of a Cougar Helicopters S-92A off Newfoundland in March 2009.
