compressor stall said : "It's sad that many of the posts on here show so little understanding of what EDTO/ETOPS certification involves."
My understanding is that it means the aeroplane has sufficient redundancy with such things as generators driven from the hydraulics and hydraulics driven off the lectrics - as well as direct from the engines, systems that allow all the systems (undercart deployment, flaps, elevators, ailerons) to be driven in the event of a single engine failure; plus a proven record of low engine inflight shut down rates and an approved minimum equipment list at dispatch, that the certification authorities believe the risks of flying some specific time (distance at a given speed) from the nearest available airfield are acceptable.
The new acronym is Extended Diversion Time Operations and this is one document that sets out one set of rules
http://www.casa.gov.au/wcmswr/_asset...s/ops/82_1.pdf
Why do you think other posters are wide of the mark ?