Sponsor Message:
Civil Aviation Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
ETOPS: The Explained Text  
User currently offlineF.pier From Italy, joined Aug 2000, 1523 posts, RR: 10
Posted (12 years 1 month 6 days 12 hours ago) and read 8483 times:

I've tried with the search button but I didn't find any good explaination. Can you tell me, in easy words what the ETOPS certification allows and what it doesn't allow?

Thank you

3 replies: All unread, jump to last
 
User currently offlineLY744 From Canada, joined Feb 2001, 5536 posts, RR: 10
Reply 1, posted (12 years 1 month 6 days 12 hours ago) and read 8455 times:

Try these:

http://www.airliners.net/discussions/tech_ops/read.main/26771/6/

http://www.airliners.net/discussions/tech_ops/read.main/27697/6/


LY744.



Pacifism only works if EVERYBODY practices it
User currently offlineDelta-flyer From United States of America, joined Jul 2001, 2676 posts, RR: 7
Reply 2, posted (12 years 1 month 6 days 12 hours ago) and read 8447 times:

ETOPS - Extended Twin-engine Operations - allows a twin to be a certain distance from the nearest suitable airport. The distance is given in minutes of flying time on a single engine.

To get ETOPS rating, the engine type must have a certain demonstrated in-service reliability, which is measured in "mean time between failures", and the aircraft must have additional redundancies to assure all systems will function when an engine is out. This information is provided by engineering groups that specialize in reliability and system safety, and they are a prominent part of the engineering function at airframers.

Based on the engine reliability and level of redundancies, the aircraft is given an "xxx" minute ETOPS certification (typically 120 or 180 minutes), which means it must be within 120 or 180 minutes from the nearest airport during every part of its flight. This factor is used for planning long routes where intermediate airports are scarce, particularly (but not necessarily) over water.

Three and four (or more) engined aircraft do not require ETOPS certification, as their reliability is inherently adequate for dealing with engine-out situations. That's why over some South Atlantic and Pacific routes an ETOPS aircraft may require a longer route to comply with its rating than a 3 or 4-engine aircraft that can fly direct.

I hope this fills the void.

Cheers,
Pete


User currently offlinePW100 From Netherlands, joined Jan 2002, 2326 posts, RR: 12
Reply 3, posted (12 years 1 month 6 days 9 hours ago) and read 8414 times:

Engines Turning Or Pax Swimming...


Immigration officer: "What's the purpose of your visit to the USA?" Spotter: "Shooting airliners with my Canon!"
Top Of Page
Forum Index

This topic is archived and can not be replied to any more.

Printer friendly format

Similar topics:More similar topics...
Is An E-version Of The Jeppesen Text Available? posted Sun Apr 9 2006 21:41:26 by Aak777
ETOPS, The 777 And A340 posted Sat Mar 16 2002 13:48:44 by Flyinghighboy
Why Is The 757 The Etops Narrowbody Of Choice? posted Thu Feb 7 2008 07:23:55 by Manfredj
What Is This Etops In The Picture posted Mon Dec 24 2007 09:37:22 by Mandargb
The New FAA Etops Rule For 135 Aircraft posted Tue Nov 27 2007 15:04:27 by Fumanchewd
Which Airport Gets The Most Etops Planes? posted Sun May 28 2006 04:34:12 by YULYMX
Etops In The Caribbean, Question posted Sat May 6 2006 20:36:54 by A388
Does The 737NG Have 120 Or 180 Etops? posted Thu Dec 1 2005 12:07:19 by CRJ900
The Etops Thread posted Mon Jun 27 2005 16:56:57 by FlyinTLow
Pic Of The Day (KLM) And Etops posted Fri Jun 24 2005 20:27:11 by Fbm3rd
The New FAA Etops Rule For 135 Aircraft posted Tue Nov 27 2007 15:04:27 by Fumanchewd
Which Airport Gets The Most Etops Planes? posted Sun May 28 2006 04:34:12 by YULYMX
Etops In The Caribbean, Question posted Sat May 6 2006 20:36:54 by A388
Does The 737NG Have 120 Or 180 Etops? posted Thu Dec 1 2005 12:07:19 by CRJ900
The Etops Thread posted Mon Jun 27 2005 16:56:57 by FlyinTLow
Is An E-version Of The Jeppesen Text Available? posted Sun Apr 9 2006 21:41:26 by Aak777
ETOPS, The 777 And A340 posted Sat Mar 16 2002 13:48:44 by Flyinghighboy
US Has 2 Versions Of The Etops 757? posted Sat Dec 19 2009 19:14:37 by USAirALB
Why Is The 757 The Etops Narrowbody Of Choice? posted Thu Feb 7 2008 07:23:55 by Manfredj
What Is This Etops In The Picture posted Mon Dec 24 2007 09:37:22 by Mandargb
The New FAA Etops Rule For 135 Aircraft posted Tue Nov 27 2007 15:04:27 by Fumanchewd
Which Airport Gets The Most Etops Planes? posted Sun May 28 2006 04:34:12 by YULYMX
Etops In The Caribbean, Question posted Sat May 6 2006 20:36:54 by A388
Does The 737NG Have 120 Or 180 Etops? posted Thu Dec 1 2005 12:07:19 by CRJ900
The Etops Thread posted Mon Jun 27 2005 16:56:57 by FlyinTLow