1. Basics of ADS-B Sharing
SEA/BOB ADS-B WG/8 – SP/11
Basics of ADS-B Sharing
Ho Wee Sin
Principal Engineer (Surveillance)

2. Contents Cost Apportionment Principles
Arrangements to Provide Services
Data Sharing Agreement

3. COST APPORTIONMENT PRINCIPLES

4. Cost-Apportionment Principles
General: User-pay principle
If an ADS-B GS serves solely (or significantly) the need of the owner ANSP, the cost of installation and maintenance should be borne by the owner ANSP.
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5. Cost-Apportionment Principles
If an ADS-B GS provides surveillance data to the owner ANSP as well as the adjacent ANSPs, the owner ANSP may, if it desires to do so, work out the cost apportionment with the adjacent ANSPs. The cost components below may be considered:
(i) installation of the ADS-B ground station;
(ii) maintenance & operations of the ADS-B ground station; and
(iii) sharing of ADS-B surveillance data.
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6. Cost-Apportionment Principles
If it is necessary for an ADS-B ground station to be installed in one State which serves solely (or significantly) the needs of an adjacent ANSP (the user ANSP), the cost of installation and maintenance of the ADS-B ground station should as far as possible be borne by the user ANSP.
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7. Cost-Apportionment Principles
The tier of service level should also be considered when formulating the actual cost apportion.
Can illustrate

8. Cost-Apportionment Principles
Indonesia - Singapore
Exchanges ADS-B data without cost
Cost of VHF facilities charged to Singapore
Singapore – Vietnam
Cost of implementing and maintaining ADS-B and VHF charged to Singapore
Australia – Indonesia

9. Arrangement to provide services

10. Possible arrangements (1)
Provider provides the service
Provider will install the equipment and performs the maintenance
User pays the provider directly

11. Possible arrangements (2)
Delegating the responsibility to appointed company
Provider agreeing to data sharing
Provider appoints a company to provide services
User pays the appointed company directly

12. Possible arrangements (3)
Mixture of both
Part of the services performed by providers
Part of the services performed by appointed company
User pays to both provider and appointed company

13. Possible arrangement (4)
Third Parties Service Provider
States become users and all pay to the service provider.
States can negotiate directly with service provider.

14. Financing Models Upfront payment vs recovery over a period
Higher upfront cost
Recovery over a period
Interest may be imposed

15. Data sharing agreement

16. Items in Data Sharing Agreement
Pre-amble
ADS-B enhances safety
APANPIRG, IATA and CANSO encourages such collaboration
Definitions and Interpretations
Defines the various terms
Objective of the Agreement
Improve safety and operational efficiency by providing ADS-B coverage
Where applicable, in areas including and up to 150NM from FIR boundary
Provision of Equipment and Private Circuits
Parties responsible for providing equipment and private circuits in their premises.
They will collaborate for testing.
Operations and Maintenance
Parties responsible for maintain equipment and private circuits in their premises.
Parties inform each other in the event of breaks in service.
Modifications
Parties to reach an agreement whenever modifications are necessary

17. Items in Data Sharing Agreement
Costs
The agreed cost apportionment
Limitations on Use and Communication of ADS-B Data
Data will be used for civil air traffic control
Liability
[To be mutually agreed]
Force Majeure
Provider will not be in breach if service breaks during force mejeure
Settlement of Disputes
Final Provisions
Nothing in the agreement prejudice primary obligation of parties to provide safe ATC.
Duration
The agreed duration of the agreement.
Entire Agreement
Stating that the Agreement is the entire agreement. No other side agreements

18. Items in Data Sharing Agreement
Amendment
No modification of agreement unless in writing and signed by authorised representative.
Rights of Third Parties
Rights of third parties are excluded
Annex A - Providers and Users of ADS-B and DCPC Facilities
To identify the providers and the users
Annex B - Implementation Schedule
To state the implementation and testing schedule of the various facilities
Annex C – Technical Scope of Works
To define the scope of works of each party and the technical details of the facilities.
Annex D – Cost
To define the manner cost is shared and the manner of payment.
Annex E – Correspondence
To define the official means of correspondence.

19. Likely issues to be resolved
Contract period
Some organisations have maximum number of years for agreements
Depreciation period of equipment
Some organisations impose depreciation periods
Capital investment has to be recovery by end of depreciation period
Choice of words
Different States interprete words slightly differently
Need to find compromise

20. Likely issues to be resolved
Financing
Some organisations pay capital investment upfront
Others pay over a certain period
Bank interest is a consideration
Payment
Choice of currency
Payments dates
Before or after service
Loss of services
Penalty

21. Thank You