Morgans wrote:
"Eunometic" wrote

ETOPS ???

Extended-range Twin-engine Operation Performance Standards.

Basically, it means the aircraft can operate overwater* as long as it is
within X minutes from a divert airfield (where X is anywhere from 75
minutes to 180 minutes). The idea is that an ETOPS-rated twin-engine
aircraft is reliable enough that even if one engine fails the other will
keep running and keep the plane flying at least the rated time, so that
a safe landing is possible.



*Technically, anywhere more than 1 hour from a divert field, so ETOPS
applies to long-range overland routes too, but the oceanic routes were
the main drivers.

--
Tom Schoene lid
To email me, replace "invalid" with "net"