diff --git a/tasks/flightradar24/frontend/main.py b/tasks/flightradar24/frontend/main.py
index d421ac9..b4f4d22 100644
--- a/tasks/flightradar24/frontend/main.py
+++ b/tasks/flightradar24/frontend/main.py
@@ -416,6 +416,7 @@ def tracks():
         for r in rows:
             pts = r["points"] if isinstance(r["points"], list) else []
             coords = [[p["lon"], p["lat"]] for p in pts if p.get("lon") is not None]
+            times = [p["ts"].isoformat() if hasattr(p.get("ts"), "isoformat") else str(p["ts"]) if p.get("ts") else None for p in pts if p.get("lon") is not None]
             if len(coords) < 2:
                 continue
             features.append({
@@ -427,6 +428,7 @@ def tracks():
                     "icao24": r["icao24"],
                     "callsign": r["callsign"] or r["icao24"],
                     "point_count": len(coords),
+                    "times": times,
                 },
             })
 
diff --git a/tasks/flightradar24/frontend/static/index.html b/tasks/flightradar24/frontend/static/index.html
index 1fa3b1b..30397ea 100644
--- a/tasks/flightradar24/frontend/static/index.html
+++ b/tasks/flightradar24/frontend/static/index.html
@@ -125,7 +125,7 @@ function closePopup() {
 
 async function refreshTracks() {
   try {
-    const res = await fetch('/api/tracks?minutes=' + getMinutes());
+    const res = await fetch('/api/tracks?minutes=' + getMinutes() + '&limit=200');
     if (!res.ok) return;
     const geojson = await res.json();
     let features = geojson.features || [];
@@ -138,15 +138,32 @@ async function refreshTracks() {
     trackLayers = [];
 
     for (const f of features) {
-      const coords = f.geometry.coordinates.map(([lon, lat]) => [lat, lon]);
+      const pts = f.geometry.coordinates; // [[lon, lat], ...]
+      const times = (f.properties.times || []);  // ISO strings, may be empty
+
+      // Split into segments where time gap > 5 min (300s)
+      const segments = [];
+      let seg = [];
+      for (let i = 0; i < pts.length; i++) {
+        if (i > 0 && times.length === pts.length) {
+          const dt = (new Date(times[i]) - new Date(times[i-1])) / 1000;
+          if (dt > 300) { segments.push(seg); seg = []; }
+        }
+        seg.push([pts[i][1], pts[i][0]]); // [lat, lon] for Leaflet
+      }
+      if (seg.length) segments.push(seg);
+
       const callsign = f.properties.callsign || f.properties.icao24;
-      const line = L.polyline(coords, {
-        color: '#58a6ff',
-        weight: 3,
-        opacity: 0.7,
-      }).addTo(map);
-      line.bindPopup(callsign);
-      trackLayers.push(line);
+      for (const segment of segments) {
+        if (segment.length < 2) continue;
+        const line = L.polyline(segment, {
+          color: '#58a6ff',
+          weight: 3,
+          opacity: 0.7,
+        }).addTo(map);
+        line.bindPopup(callsign);
+        trackLayers.push(line);
+      }
     }
   } catch (_) { /* silent — tracks are non-critical */ }
 }
diff --git a/tasks/flightradar24/ingest/preprocess/main.py b/tasks/flightradar24/ingest/preprocess/main.py
index e84f517..768ff11 100644
--- a/tasks/flightradar24/ingest/preprocess/main.py
+++ b/tasks/flightradar24/ingest/preprocess/main.py
@@ -286,6 +286,11 @@ def process_batch(conn, packets: list) -> int:
             aircraft_id = upsert_aircraft(conn, icao24, callsign, now)
             flight_id   = get_or_create_flight(conn, aircraft_id, callsign, observed_at)
 
+            # sanity-check: skip obviously invalid coordinates
+            if lat is not None and lon is not None and not (-90 <= lat <= 90 and -180 <= lon <= 180):
+                log.warning("Invalid coords icao24=%s lat=%s lon=%s — skipping", icao24, lat, lon)
+                lat, lon = None, None
+
             if lat is not None and lon is not None:
                 track_id = get_or_create_track(conn, flight_id)
                 append_track_point(