ETOPS AREA OF OPERATION

[arakotoarson]

Hi all,

Normally ETOPS AOO is defined by circles with a radius of the maximum diversion distance computed with approved N-1 speed and ETOPS approved time with zero wind ans zero ISA temperature deviation.

Sometimes, on dispatch, even staying inside the AOO we have higher N-1 flight time than approved (due to headwind for example) from ETP to nominated ETOPS enroute alternate. May we operate the flight in this case ?

Thanks for your reply !