01 — Map
See integrity drops cell by cell
The share of aircraft with a low NIC is aggregated hour by hour on H3 cells. Insufficient data and coverage gaps never look “clean”; they are marked separately.
Open the map →GNSS integrity from ADS-B
See where GPS-integrity drops are observed, and which aircraft it affects.
We measure GPS-integrity drops in the ADS-B messages aircraft broadcast, map them on hexagonal cells and show the aircraft behind every cell. Where there is no data, that is not «no interference».
- Free, no sign-up
- Source: adsb.lol (ODbL)
- Our own method
Indicative · based on ADS-B integrity (NIC) data
Reading data window…
Latest measured day
2026-10-20- Insufficient data · 43
- Low · 158
- Medium · 29
- High · 51
Cell levels. Türkiye and neighbours (static export region).
- 35
- medium/high-level events
- 4.1%
- of aircraft-hours affected
- 23,145
- aircraft-hours observed
Decorative animation: the signals and names on the globe are randomly generated, not measurements. Real data is in the cards below.
Built on openly licensed data and open standards
- adsb.lol (ODbL)
- Uber H3
- EUROCONTROL FIR
- OurAirports
- OpenFreeMap
- MapLibre GL
01 — 2026-10-20
The latest data, at a glance
Every chart below comes from the newest published day. Nothing on this page is sample data. Coverage depends on where receivers are: an unseen region does not mean «no problem», and a change does not tell its cause.
Share of aircraft-hours affected
Last 30 days, daily. Affected aircraft-hours / observed aircraft-hours; Türkiye and neighbours.
Days before 4 Oct 2026 may include unfiltered records from faulty devices.
Largest events of the day
On the latest measured day, by aircraft affected; medium and high level events.
Week comparison
difference −0.2 points · small difference
- Last 7 days3.7%
- previous 7 days3.9%
An observed change; it does not say why, or whether coverage changed.
Affected share by hour
Latest measured day, UTC hour. Each bar is the share of aircraft affected in that hour.
Route example: LTFM → LTAC
Cell levels along the shortest (great-circle) line; latest measured day.
- Level
- High
- km
- 381
- Measurable share of the line
- 100%
Regions, last 7 days
Share of affected aircraft per region. Open a region for its daily trend, recent events and yearly history.
- Black Sea region5.9%aircraft affected
- Eastern Mediterranean3.8%aircraft affected
- Caucasus20.6%aircraft affected
- Balkans0.5%aircraft affected
- Turkish airspace6.4%aircraft affected
Airports: highest share this week
The 3 airports with the highest share of affected aircraft around them over the last 7 days (enough aircraft seen in the week).
Four tools, one measurement
02 — Explainability
The aircraft behind every colour
Click a cell: affected aircraft, lowest NIC, the hourly trend and observation sufficiency. A red cell is a measurement, not a claim.
How we calculate →03 — Events
Integrity drops and positioning anomalies, one event schema
Drops in adjacent cells become events: a permanent page and RSS. An event does not say what caused it (jamming, spoofing or a fault).
See events →04 — Route
Assess a route with two airports
Cell levels along the line, the measurable share and the last 30 days of history. Background information, not a flight-planning tool.
Try a route →The same three steps under every tool
The map, events and reports all derive from the same hourly summaries. Every page reads the same published daily data.
01
Collect
Daily position messages from the open adsb.lol archive are processed; each carries the aircraft's GPS integrity (NIC).
02
Resolve
Messages are aggregated hourly on H3 cells, faulty avionics are dropped and cells are assessed statistically against a background rate.
03
Retain
Daily summaries are archived by date; past days are read the same way.
- Daily
- archive processing
- Separate
- insufficient data and coverage gaps
- Labelled
- observation sufficiency, in every cell
How is the level decided?
The level is computed from NIC only; NACp is a second signal. Colours match the map.
- Insufficient data
Very few aircraft in the cell. It does not mean “clean”.
- Low
Small affected share, or not significant against the background.
- Medium
Significantly above the background, moderate share.
- High
Significantly above the background, large share.
Start with your own region
Open your airport, route or FIR; the first measurement is one click away.
Your part of the sky, first.