Lead Sled
Sitt'n on the throne...
- Joined
- Apr 1, 2004
- Posts
- 2,066
I agree with Falcon Captain...Falcon Capt said:...the reason the 757, 767 and 777 are all twins is because the airlines dictated that they wanted twins to reduce maintenance costs, not because 2 engines is a particularly good idea... Airlines are the buyers so they make (most of) the rules when it comes to those things...
I believe that the main driving force behind ETOPS is the need to cut airline operating costs and one of the major ways this is done is by eliminating engines. In years past, engines were a pilot's security blanket - the more the merrier. The earlier generation engines didn't have the power, the reliability, nor the efficiency of today's powerplants - hence, in order for an early generation jet aircraft to be large enough to be economically viable it had to have several (4, 6, or 8) engines. (B-707, B-47, B-52) The side benefit was that in the event of an engine failure you only lost 1/4, 1/6, or 1/8th of the available thrust.
Today's engines are more reliable, more powerful, and more economical. They have the power and the reliability to enable twin-jets to safely operate over oceanic routes. Or at least that's what the airline's accountants want us to believe. If you ask almost any experienced pilot would he rather fly a 3 or 4 engine verses a twin-jet on those long oceanic legs I think that, to a person, you would find that they would favor 3 or 4 engine aircraft for those trips. This isn't to say that ETOPS operations aren't safe, but rather I believe that most pilots simply would prefer more than two engines on those routes.
I've got a friend who is a 747 captain. He put it best when he said that when a 3 or 4 engine jet looses an engine it's an inconvenience - not an emergency. Engine failures on these aircraft aren't even included on the Emergency checklist, it's considered an abnormal procedure. On a twin-jet, it's definitely something that's easily handled but, never the less, it's still an emergency.
Oh well, enough of this let's discuss something that really matters. You choose.
'Sled