Source - ICAO APAC GBAS-SBAS Implementation Forums
Scope of this note
This note is the knowledge base’s current institutional anchor for ICAO APAC GBAS/SBAS Implementation Task Force (ITF) meetings as the primary regional coordination forum for SBAS and GBAS implementation in the Asia-Pacific region.
Boundary:
- Meeting records, working papers, and information papers from this forum are the correct institutional source layer for regional SBAS implementation claims.
- This note is not a completed extraction of all ITF meeting materials.
- Individual ITF meeting documents still require direct extraction for authoritative content.
- This note does not imply that ICAO APAC has endorsed any specific ASEAN SBAS program or service model.
Verified meeting records
ITF/7 — Seventh GBAS/SBAS Implementation Task Force (2025)
Source signal: ICAO APAC working paper A3-WP05 (rev3), hosted at icao.int
|| Field | Verified signal |
||---|---|
|| Forum | Seventh GBAS/SBAS Implementation Task Force |
|| Abbreviation | ITF/7 |
|| Date | 14–16 May 2025 |
|| Location | Not yet extracted from primary source |
|| Host body | ICAO APAC Office |
|| Purpose | Coordination of GBAS and SBAS implementation across the Asia-Pacific region |
|| Working paper | A3-WP05 (Co-Chairs): Preliminary Draft SBAS Implementation Guidance Document (rev3, 14 May 2025) |
|| Working paper URL | https://www.icao.int/sites/default/files/APAC/Meetings/2025/2025%20GBASSBAS%20ITF7/3-Working%20Papers/A3-WP05-ATTM-Co-Chairs-Prelimary-Draft-SBAS-Implementation-Guidance-Document.pdf |
The ITF/7 working paper contains the Preliminary Draft SBAS Implementation Guidance Document (rev3), which has been used as a structural signal source for DO-229 and Doc 9849 research in this knowledge base. Key structural signals confirmed from this document:
- Confirmed WAAS as the reference U.S. SBAS example within the DO-229 context
- Confirmed PRN code expansion (120–138 original; expanded to 139–158 in May 2017)
- Confirmed six-year advance notice requirement for GNSS equipment changes and service termination (per Annex 10)
- Confirmed SBAS architecture components: ground reference stations, master stations, uplink stations, GEO transponders
- Confirmed GAGAN system architecture (ISRO/AAI), GEO satellites (GSAT-8 PRN-127, GSAT-10 PRN-128, GSAT-15 PRN-132), and coverage statistics
- Confirmed LP, LPV, LNAV/VNAV, LNAV as SBAS operational types
- Confirmed Class 3 (LP+LPV) and Class 4 (fail-down to LNAV) as SBAS avionics classes
Other ITF meetings in the institutional record
Signal sources: research scouting; ICAO APAC meeting catalog pages
The following meetings are referenced in the institutional record and listed here as extraction targets. They require direct URL or document extraction before they can support authoritative claims:
- Eighth Meeting of the Asia/Pacific GBAS/SBAS Implementation Task Force — URL not yet extracted
- Previous GBAS-SBAS Implementation Task Force meetings (ITF/1 through ITF/6) — URLs and document records not yet extracted
- SBAS-GBAS Implementation Workshop for Air Space Users — URL and document records not yet extracted
What this source can currently anchor
With the ITF/7 working paper now verified as a public ICAO document:
- ICAO APAC ITF is the primary regional coordination forum for SBAS implementation in the Asia-Pacific region
- ITF/7 was held in May 2025 with a Preliminary Draft SBAS Implementation Guidance Document as a working paper
- GAGAN (India) was the confirmed case study within the ITF/7 document
- SBAS avionics Class 3/4 terminology is confirmed from the ITF/7 preliminary guidance document
- ICAO Annex 10 SARPs are confirmed as the SBAS system-level standard referenced by ITF materials
What this source must not be used for yet
Do not use this note alone to publish:
- any claim that ASEAN states have adopted a common SBAS roadmap
- any claim that ICAO APAC has endorsed a specific Southeast Asian SBAS service model
- any specific SBAS implementation timeline for ASEAN
- LPV availability, procedure minima, or operational approval claims for any specific state
- claims about SouthPAN, SDCM, or other non-ASEAN SBAS providers’ status beyond what is in their own dedicated source notes
Extraction targets for next cycle
| Meeting | URL | Verification needed |
|---|---|---|
| ITF/7 (May 2025) | https://www.icao.int/sites/default/files/APAC/Meetings/2025/2025%20GBASSBAS%20ITF7/ | Full meeting page, all WPs/IPs, participant list |
| ITF/6 (previous) | Not yet extracted | Meeting page and document URLs |
| CNS SG meetings with SBAS agenda items | Not yet extracted | Meeting page, CNS SG SBAS-relevant WPs |
Relationship to SBAS standards sources
|| Standard source | Relationship to ITF | ||---|---| || Source - ICAO Annex 10 Volume I GNSS SBAS | ITF guidance documents reference Annex 10 as the SARPs baseline for SBAS system-level provisions | || Source - ICAO Doc 9849 | ITF/7 preliminary guidance document confirms Doc 9849 as the implementation guidance companion | || Source - RTCA DO-229 | ITF/7 preliminary guidance document uses DO-229F as the airborne equipment MOPS reference |