Extended Diversion Time Operations EDTO

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Extended Diversion Time Operations (EDTO)

• Status Report

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Extended Diversion Time OperationsDefinition

• Any flight by an aeroplane where the flight time
  at the one engine inoperative cruise speed (in
  ISA and still air conditions), from a point on
  the route to an adequate alternate aerodrome, is
  greater than the threshold time approved by the
  State of the Operator or any flight operated in
  an area designated by the State of the Operator
  as an area of extended diversion time
  applicability

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Extended Diversion Time Operations (EDTO)

• Not the same as long range operation or
  ultra-long range operation
• Proposed for two, three and four engine
  aeroplanes
• Would place additional requirements on three and
  four engine aeroplanes involved in EDTO such as
  cargo compartment fire suppression and
  maintenance requirements

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Issue and Terminology

• The problem is the length of the diversion, not
  the length of the flight in the event of a
  primary system or propulsion system failure
• ETOPS and LROPS do not describe the nature of the
  operation
• Extended Diversion Time Operations is considered
  more descriptive of the issue at hand

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History

• EDTO provisions first proposed by Operations
  Technical Panel (OPSP/6) in 2003
• Reviewed by ANC
• Proposal sent back to OPSP
• OPSP/7 refined the maintenance provisions for
  aeroplanes with more than 2 engines on EDTO
• Preliminary review by ANC and sent to States for
  comments in September 2007

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Consultation with States and International
Organizations

• States had fundamental difficulties with many
  provisions
• Probable cause proposal derived from existing
  ETOPS provisions extended to aeroplanes with more
  than 2 engines
• A new approach to Extended Diversion Times
  Operations for all aeroplanes, with any number of
  engines, is needed

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The Way Forward for a New EDTO Concept

• New group formed by ICAO Special Operations Task
  Force Identify the safety issues
• SOTF Membership Stakeholders involved in such
  operations 5 States, operators as advisors,
  IATA, IFALPA, EASA, ICCAIA, OPSP Airworthiness
  Panel members
• Start with a clean sheet of paper, but consider
  the work done and comments from States

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Timeline

• Meet in the fall 2008
• Complete provisions in 2009
• Applicable in 2010 at the earliest

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• Thank You