SBAS Service Volume and Coverage
Purpose
This note explains how the knowledge base should treat SBAS service volume and coverage claims.
Coverage is a service or signal-support concept. It is not the same as operational authorization, procedure publication, receiver approval, or aircraft/operator eligibility.
Claim boundary
| Statement type | Correct owner | Required evidence |
|---|---|---|
| A provider describes a service area or coverage region | service-provider source note | official provider service definition, status page, or performance report |
| A signal can be received | service/provider or technical measurement note | source-specific signal evidence |
| A receiver can process supported SBAS messages | receiver/equipment source family | MOPS/article-approval evidence |
| A procedure is published for a runway | operational validation dashboard / aviation note | AIP/AIS/procedure source |
| An aircraft/operator may use the procedure | operational validation dashboard / aviation note | avionics, aircraft, operator, and regulator evidence |
Why coverage is often overused
A map or service-region statement can be useful for planning, but it is an incomplete aviation claim. Operational use requires multiple layers beyond geography:
- source-defined service commitment;
- applicable signal/message support;
- receiver capability and approval basis;
- procedure design and publication;
- aircraft installation and operator authorization;
- current operational status and contingency logic.
Safe wording pattern
The source supports a coverage or service-area statement within its stated scope. It does not by itself establish procedure availability, aircraft eligibility, or operational authorization.Relationship to service-provider notes
Use Source - SBAS Service Providers as the family router and child source notes for system-specific evidence. This page should not duplicate system facts from those source notes.
Relationship to operational validation
Use SBAS Operational Validation Dashboard before converting a coverage statement into an aviation operational statement.
Source anchors
- SBAS Core Claim Routing
- SBAS Service Performance Concepts
- Source - SBAS Service Providers
- SBAS Operational Validation Dashboard
- SBAS Standards Source Matrix