Originally Posted by Rubberband

Last year new FAR 121.646 was enacted. After a one year delayed compliance clause, the regulation now covers 3 or more engine A/C that are more than 180 min. from a suitable en-route alternate.
Now that A/C with 3 or more engines are included, the term has been changed to "Extended Range Operations".
All this is buried in FAA InFo# 07004 dated 1-26-07