EmergencyDescent — SWA4240
2026-03-23 21:34 UTC· KSJC → ?· SOUTHWEST AIRLINES CO· B737
SWA4240 (Southwest Airlines) had departed KSJC on 2026-03-23. SkyMeter detected a emergencydescent at 21:34 UTC. Trace data at the event: 34894 ft AGL, 436 kt GS. Approach stability score: 89/100. Scores in this band are observed on roughly 50% of approaches at this runway and represent the centerline of normal operations. METAR at the time reported 5 kt wind, 5 kt crosswind component. Detection algorithm and known limitations: see SkyMeter methodology.
Active FAA TFR during this flight
Source: FAA TFR archive (hourly snapshot)- SECURITY5/0601 2025-11-30 19:00Z – 2026-05-31 18:59Z SFC–400 ft
Los Angeles, CA, Sunday, November 30, 2025 through Sunday, May 31, 2026 Local
View FAA NOTAM →
SkyMeter cross-referenced this flight against FAA-published TFRs that were active during its window and within its geographic bounding box. Overlap doesn't necessarily mean violation — the aircraft may have been outside the TFR’s precise polygon or flying under air-traffic-control coordination.
Pilot review data
- 34894 ft AGL at event
- 436 kt ground speed
- 0 fpm vertical
- Approach stability 89/100
- 5 kt wind
- 5 kt crosswind component
Flight context
- SWA4240
- Southwest Airlines
- B737
- 2026-03-23 21:34 UTC
All events on this flight
Automated analysis. Events shown on this page (such as go-around, unstable approach, or runway events) are heuristic classifications produced by algorithms from publicly broadcast ADS-B data. They are intended to surface flights of interest for further review — they are not findings of fact, and they do not determine pilot fault, regulatory compliance, or the cause of any occurrence. Coverage gaps and sensor noise can affect accuracy. Only the relevant civil aviation authority or accident investigation body can make official determinations. How we detect events · Dispute or correct this data