Gearup From Canada, joined Dec 2000, 578 posts, RR: 0 Posted (15 years 4 months 4 days 22 hours ago) and read 1608 times:
Hamlet69 made an interesting point in the 'Swissair buying the B777' thread concerning 180 ETOPS and that is that it covers most Northern Pacific routes (and it does). I read an article concerning the more remote routes which basically said that yes fine, 180 minute ETOPS will cover it but some of the alternate airports in Siberia would have no difficulty accepting a B777 or A330 as regards ATC, runways, fire fighting capability but if you had to abandon the aircraft on the runway, you could end up with 250+ pax standing in -30 degree C temperatures with little more than a shed or an old aircraft hanger for shelter! I know AI is concerned about this and other things with reference to Boeing's effort to extend ETOPS to in excess of 200 minutes for the 777. any thoughts on this?
Raggi From Norway, joined Oct 2000, 1009 posts, RR: 1
Reply 1, posted (15 years 4 months 4 days 20 hours ago) and read 1569 times:
If they are stranded in the middle of nowhere in -30`C, they can always leave the functioning engine idling, and thus generate electricity/ heat for the passengers...
I don`t know if that was a great suggestion, but at least the passengers could just sit inside and wait for help.....
OO-AOG From Switzerland, joined Dec 2000, 1426 posts, RR: 4
Reply 2, posted (15 years 4 months 4 days 20 hours ago) and read 1562 times:
If a 777 needs to divert to Siberia, I think the problem might be severe enough to refrain keeping an idling engine and shut down both engines asap. Anyway, an APU is enough to give electricty to the aircraft so there is definately no need to keep an engine idling in any case!.
A320FO From Austria, joined Oct 2000, 211 posts, RR: 1
Reply 3, posted (15 years 4 months 4 days 19 hours ago) and read 1554 times:
Another problem with the ETOPS-alternates in e.g. Siberia is their availability. A lot of these remote airports are not open for 24 hours. Also the weather often closes these airports.During flight planning the ETOPS field has to provide certain weather minimas, which are stricter than those during the actual diversion.
By extending the ETOPS limit over the 200 minute margin, you might have another ETOPS alternate available, and can proceed with the flight, where the 180min limit might have had the flight cancelled.
The prospect of flying with only ONE engine for over 3 hours isn't to comforting, especially if you consider murphy's laws...........