B777NG IFSD rate
 

With the AF second 777NG IFSD and diversion to LED (and there was airframe damage), AF has lost ETOPS 180 - though they were allowed to keep ETOPS 120.

It was mentioned that B777NG did several years without a single IFSD - but now in addition to AF, other airlines have had trouble, resulting in 5 IFSD-s in 5 months.

What is the 6 month world fleet total flight hours of 777NG? And therefore, what is the world fleet 6 month average IFSD rate?

How many IFSD-s are left before 777NG loses ETOPS 180? What about ETOPS 207?

Do 777-300ER and 777-200LR share world fleet total flight hours? If yes, would loss of ETOPS 180 ground the 777-200LR lines like Air India BOM-JFK or Emirates DXB-GRU?