2025 Altimetry System Error (ASE) Technical Interchange Event
- Dates: 9th to 11th September 2025
- Location: Seattle, WA 98121 USA
Representatives from the Federal Aviation Administration and EUROCONTROL chaired an Altimetry System Error (ASE) Technical Interchange Event on 9th to 11th September 2025 in Seattle, Washington.
This ASE Technical Interchange Meeting was open to aviation industry and regulatory agency attendees.
Executive Summary (PDF)
Agenda (PDF)
Day 1
| Presentation | Presented by |
| RVSM in North America (PDF) | NAARMO |
| Large ASE in the United States (PDF) | NAARMO |
Day 2
| Presentation | Presented by |
| Operational Need for and Benefits Associated with Extension of RVSM above 410 (PDF) |
NAV CANADA and NATCMA |
| Observed Performance Above and Below 410 (PDF) | NAARMO |
| RVSM above FL410 - METEOMATICS' View on What is Possible (PDF) | METEOMATICS |
| Comparison of Sources of MET Data (PDF) | NAARMO |
| Height Differences Between Flight Levels (PDF) | NAARMO |
Day 3
| Presentation | Presented by |
| Improvements in Monitoring (PDF) | NAARMO |