Methodology

1
Methodology OSED Overview

• Brussels
• 30 January 2006
• Jörg Steinleitner
• CASCADE Infrastructure WP Manager, EUROCONTROL

European Organisation for the Safety of Air
Navigation
2
Context

• Methodology for developing an OSED (and other
  documents)
• is nothing new
• has been applied for
• Initial ATN-based Datalink Services (WG53/SC-186)
• ADS-B Applications (Requirements Focus Group)
• ... and is effectively already used for D-OTIS
  !!!

3
ED78A/DO-264 GuidelinesCo-ordinated Requirements
Determination
Co-ordinated Requirements Determination (OPS
SYS)
4
ED78A/DO-264 Deliverables
5
Allocation of Requirements
SPR INTEROP Standards are key means of
compliance for Operational and Airworthiness
Approval
6
Working Process (as for RFG)
SYS
OPS
7
Co-ordinated Requirements DeterminationSummary
(source ED78A)
8
OSED Scope
9
OSED Content

• Expected Benefits, Anticipated Constraints
  Human Factors
• Environmental Characteristics and Conditions
• Service Definition, incl.
• Operational Context
• Operating Methods with and without Data Link
• (Initial) Identification of Abnormal Events
• (Initial Data Link) Quality Of Service
  Requirements

CASCADE OFG offers draft D-OTIS OSED as starting
point
10
Conclusions

• ED78A/DO-264 Methodology well applied to ATS Data
  Link Services and ADS-B Applications
• WG53/SC-189 and RFG provide good examples for
  related Working Processes
• Active Co-ordination between WG44/WG53/SC-186
  required throughout entire Requirements
  Determination Process
• CASCADE OFG provides D-OTIS OSED starting point