Go Back  PPRuNe Forums > Flight Deck Forums > Tech Log
Reload this Page >

EDTO vs ETOPS

Tech Log The very best in practical technical discussion on the web

EDTO vs ETOPS

Old 2nd Dec 2013, 06:38
  #1 (permalink)  
Thread Starter
 
Join Date: Jul 2009
Location: Down the Taxiway...
Age: 33
Posts: 98
EDTO vs ETOPS

A new term that I came across recently

EDTO Extended Diversion Time Operation

Is it the same as ETOPS.... whats the difference is there if any actually.

In terms of applying of the rule JAA and FAA do have a separate document for EDTO but it refers to guidelines in the ETOPS for actual certification...
bucks_raj is offline  
Old 2nd Dec 2013, 07:22
  #2 (permalink)  
 
Join Date: Sep 2000
Location: Planet Earth for a short visit
Posts: 614
Subtle differences. EDTO is less restrictive on a practical level, usually to accommodate geographical circumstances. We use 180 minute EDTO here in Pacific region.

However as we all know, the passengers will not remain seated after a ditching whilst we prepare the rafts. Chaos will ensue for sure. The regulators will have to answer questions when this does happen, which it will one day.
silverhawk is offline  
Old 2nd Dec 2013, 09:42
  #3 (permalink)  
 
Join Date: Sep 2000
Location: UK
Posts: 613
B747/A380/DC8/A340 etc not affected by ETOPS as not 'T'....

Their equivalent maybe??

BN2A is offline  
Old 2nd Dec 2013, 10:01
  #4 (permalink)  
 
Join Date: Feb 2002
Location: UK
Age: 54
Posts: 2,686
ETOPS is now applied to all.
CFR 121.161 refers.
ETOPS now just means ExTended OPerationS.
TURIN is offline  
Old 2nd Dec 2013, 10:09
  #5 (permalink)  
 
Join Date: Jan 2000
Location: FL410
Posts: 849
The EDTO approval process for large aeroplanes is valid for regular public transport (RPT) or charter operations which include certain cargo operations. To be eligible for EDTO, the specified airframe/engine combination must have been certificated to the airworthiness standards of Transport Category aeroplanes Federal Aviation Regulation (FAR) Part 25, the European Aviation Safety Agency (EASA) CS25 or the equivalent.

Three levels of operational approval are used for two- engine aeroplanes:
  • EDTOs with a maximum diversion time from 90 minutes up to 180 minutes to an en-route alternate (at the approved one-engine-inoperative cruise speed under standard conditions in still air);
  • EDTOs with a maximum diversion time from 180 minutes up to 240 minutes to an en-route alternate (at the approved one-engine-inoperative cruise speed under standard conditions in still air); and
  • EDTOs with a maximum diversion time above 240 minutes (at the approved one-engine-inoperative cruise speed under standard conditions in still air).
In the case of aeroplanes with more than two engines level of approval is used, above 180 minutes (at the approved one-engine inoperative cruise speed under standard conditions in still air).

Note: In the case of all EDTO beyond 180 minutes, additional flight dispatch requirements apply.

System redundancy levels appropriate to EDTOs must be reflected in the Master Minimum Equipment List (MMEL). An operator's MEL may be more restrictive than the MMEL considering the kind of EDTO proposed and equipment and service problems unique to the operator.

EDTO alternates serve a different purpose than the destination alternate aerodrome, and would normally be used only in the event of an engine failure or some other aeroplane system failure, an aerodrome must not be listed as an EDTO alternate unless the requirements are met.

The procedures established by the operator must ensure that EDTO is limited to flight plan routes where the approved maximum diversion time to EDTO alternates can be met under standard conditions in still air. Operators must provide for:
  • Company procedures to state that, upon occurrence of an in-flight shut down of an engine in a two-engine aeroplane, the pilot must promptly initiate diversion to fly to, and land at, the nearest aerodrome, in terms of time, determined to be suitable by the flight crew; and
  • A practice to be established such that, in the event of a single or multiple EDTO Maintenance significant system failure, the pilot will initiate the diversion procedure to fly to, and land at, the nearest aerodrome in terms of time, determined to be suitable by the flight crew, unless it has been justified that no substantial degradation of safety results from continuation of the planned flight.
Skyjob is offline  
Old 2nd Dec 2013, 18:02
  #6 (permalink)  
 
Join Date: Sep 1998
Location: wherever
Age: 50
Posts: 1,609
Depends who's rules you operate under.

ETOPS in EASA is not the same as ETOPS in the states or EDTO for the Aussies.

in EU land ETOPS is for twins.
FE Hoppy is offline  
Old 25th Dec 2013, 06:39
  #7 (permalink)  
 
Join Date: Oct 2005
Location: hkg
Posts: 101
1) EDTO applies to all aircraft. ETOPS twins only

2) EDTO less restrictive for the operator. (Not as generous as ETOPS eg weather window duration, min FFS required)

In short
vikena is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.