http://nl.wikipedia.org/wiki/ETOPS
and
http://en.wikipedia.org/wiki/ETOPS
Click at http://avherald.com/h?article=464779a8&opt=0A US Airways Boeing 757-200, registration N202UW performing flight US-799 from Amsterdam (Netherlands)
to Philadelphia,PA (USA),
was enroute at FL350 about 650nm north of Lajes, Azores Islands (Portugal)
when the crew reported problems with the right hand engine's (RB211) oil pressure,
shut the engine down,
drifted down to FL175 and diverted to Lajes for a safe landing on runway 15
about 2 hours later.