ADS-21-40/Rev.1
ADS guidance and interpretation document: System and feature operational states
Source(s)
AAPC, ETSC, and UK
Date
16 Aug 2026 (Posted: 16 Jul 2026)
Status
Subject
Meeting(s)

Proposal for guidance on operational states, including remote termination and a diagram illustrating ADS and feature operational states, update guidance on terms “on”, “off”, “available,” “active,” “unavailable,” and “disabled” as canonical operational state terms for ADS descriptions and clarify that “active” applies only to features.

UNECE server