Originally Posted by
212man
not in the background - they announced the 92B and A+ last year. The later is an upgraded A that includes the phase IV MGB, which they advertise as exceeding the 29.927 requirements. They ran it without oil for the equivalent of 500nm at 80 kts, they say.
Of course the true "loss of oil" capability will be a huge step forward. However this event highlights that the MGB design also needs to have redundant scavange capability, as the small loss of oil in this case was a consequence rather than the cause. The phase IV MGB press releases don't mention if this is part of the redesigned box, although it has been mentioned many times by Sikorsky in the past as an aim.