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TS-IOR
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B757 ER Vs ET :

Fri Jun 11, 2010 11:09 pm

What is the difference, specifications and performances, between a B757-200ER and a -200 ET ?

Same for A310-300 and -300ET ?
 
KingFriday013
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Joined: Fri May 18, 2007 7:56 am

RE: B757 ER Vs ET :

Fri Jun 11, 2010 11:41 pm

There is no such thing as a 757-200ER officially. Airlines may call their aircraft with ETOPS certification a "-200ER", but it's really just a -200 with ETOPS. The "-ET" suffix I'm pretty sure means ETOPS as well; it's not an official suffix.

As for the A310, I'm not sure.

-J.
Tho' I've belted you an' flayed you, By the livin' Gawd that made you, You're a better man than I am, Gunga Din!
 
B747forever
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Joined: Mon May 21, 2007 9:50 pm

RE: B757 ER Vs ET :

Sat Jun 12, 2010 8:18 am

Quoting kingfriday013 (Reply 1):



Oh, I thought there was a 757-200ER because when I use the radar here in Sweden the Ethiopian 757 sometimes show up as a 757-200ER.
Work Hard, Fly Right
 
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747classic
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RE: B757 ER Vs ET :

Sat Jun 12, 2010 9:35 am

Quoting kingfriday013 (Reply 1):
There is no such thing as a 757-200ER officially. Airlines may call their aircraft with ETOPS certification a "-200ER", but it's really just a -200 with ETOPS. The "-ET" suffix I'm pretty sure means ETOPS as well; it's not an official suffix.



Correct, the type certificate of the 757 (A2NM) states as (sub)types only : 757-200, 757-200PF, 757-200CB and 757-300.

In note 9, the following is stated :

"The type design reliability and performance of the Model 757-200, -200PF, -200CB, and -300 series
airplanes have been evaluated in accordance with FAA Advisory Circular 120-42A and found suitable
for Extended Range Operations with Two-Engine Airplanes (ETOPS) when operated and maintained in
accordance with Boeing Document D011N002 "Configuration, Maintenance, and Procedures for
Extended Range (ER) Operation Model 757".

see : http://www.airweb.faa.gov/Regulatory...4D512862575F400665C11?OpenDocument and download A2NM.pdf


Regarding the A310 the same can be said, in note 5 of the Type certificate of the A300/310 (A35EU) the following is stated :

"ETOPS for the A310-221 and A310-222: The type design, reliability and performance of
these airframe-engine combinations has been evaluated in accordance with AC120-42A
and found suitable for (180 minute maximum diversion time) Extended Range
Operations with the incorporation of the corresponding approved airplane configuration
CMP document (AI/EA3001, Revision 3, approved July 27, 1990 + TR approved Feb.
27, 1991). This finding does not constitute approval to conduct extended range
operations. Operational approval must be obtained from the FAA by the operator.

ETOPS for the A310-324: The type design, reliability and performance of these airframe engine
combinations has been evaluated in accordance with AC120-42A and found
suitable for (120 minute maximum diversion time) Extended Range Operations with the
incorporation of the corresponding approved airplane configuration CMP document
(AI/EA3001, Revision 2, approved March 1, 1990). This finding does not constitute
approval to conduct extended range operations. Operational approval must be
obtained from the FAA by the operator.
Any ETOPS approval for new aircraft model wherein the application was sent
to FAA prior to February 15, 2007 is to be proceeded with the ETOPS approval
against 14 CFR 25.1535 that have not yet already been approved under the
provisions of AC120-42A."

see : http://www.airweb.faa.gov/Regulatory...4E10E8625773B0058B494?OpenDocument and download A35EU.pdf.
Operating a twin over the ocean, you're always one engine failure from a total emergency.
 
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HAWK21M
Posts: 29978
Joined: Fri Jan 05, 2001 10:05 pm

RE: B757 ER Vs ET :

Sat Jun 12, 2010 9:58 am

The B757 was manufactured as B757-200,B757-200PF & B757-300.
The Sequence arrangement of Emergency Exits did vary as per customer choice.Some opted out of the Overwing exits.
The Converted freighters were call B752SF,B75F for 14.5 pallet arrangement & converted freighter similiarly to the B752PF was called the B752PCF since it was converted by Precision conversions for a 15 pallet configuration.

regds
MEL.
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