Airspace (FIR)
Beirut FIR (OLBB)
Regions that include this airspace
The region page summarises this FIR together with neighbouring airspaces.
Recent events in this FIR
Medium- and high-confidence integrity-drop events seen in this airspace over the last 7 days.
- 2026-10-1815 aircraft affected
- 2026-10-1611 aircraft affected
- 2026-10-158 aircraft affected
Longer history in this region
Integrity drop events with medium or high observation sufficiency for Beirut FIR (OLBB), year by year (from the days in the archive).
| Year | Events | Days with events | Observation level |
|---|---|---|---|
| 2023 | 5 | 5 / 318 | %43 · Moderate |
| 2024 | 297 | 203 / 366 | %65 · Moderate |
| 2025 | 2 | 2 / 361 | %82 · Strong |
| 2026 | 18 | 16 / 283 | %86 · Strong |
The observation level is that year's observed aircraft-hours as a share of today's level. As the adsb.lol receiver network grew, observation grew; event counts in low-level years cannot be compared with today's. An event is one cluster of adjacent cell-hours: several unconnected clusters on the same day count as separate events and midnight splits an event in two, so the event count is not a number of separate incidents. This is not a trend or risk claim.
FIR boundaries are based on EUROCONTROL Network Manager data. An indicator only; no observation does not mean no interference.
Based on observed ADS-B data; not an operational navigation source. It does not state a source or cause. See the methodology page for the general framework.