Unstable approach — SWA3912

KCPS · 23

2026-08-17 23:32 UTC· KECP → KCPS· SOUTHWEST AIRLINES CO· B737

▶ Replay 📊 Analyse

SWA3912 (Southwest Airlines) was operating from KECP to KCPS on 2026-08-17. SkyMeter detected a low approach-stability score at St Louis Downtown Airport (KCPS) on runway 23 at 23:32 UTC. Trace data at the event: 1535 ft AGL, 130 kt GS. Approach stability score: 40/100. Scores below 50 occur on under 10% of approaches at this runway and indicate the v2 scorer flagged the approach as highly anomalous (three or more gates exceeded the runway's P90 envelope simultaneously). METAR at the time reported 0 kt wind, 16,093 m visibility. The approach-stability score rates the final approach against stabilized-approach gates (glideslope, lateral deviation, descent rate, and IAS) at defined altitudes. A low score means one or more of those were outside the normal envelope for how the approach was flown. The score is graded by guidance type, so instrument approaches (ILS or an aligned straight-in) are held to the full gate set, while visual and pattern arrivals are surfaced only when the score is clearly low. The score is advisory and observational, a deviation measure, not an assertion of an accident. Detection algorithm and known limitations: see SkyMeter methodology.

Active FAA TFR during this flight

Source: FAA TFR archive (hourly snapshot)
  • SECURITY6/0708 2026-08-01 00:01Z – 2027-08-01 23:59Z SFC–400 ft

    Goodlettsville, TN, Saturday, August 1, 2026 through Sunday, August 1, 2027 UTC

    View FAA NOTAM →
  • UAS PUBLIC GATHERING6/3173 2026-08-13 21:00Z – 2026-08-23 07:00Z SFC–400 ft

    Lebanon, TN, Thursday, August 13, 2026 through Sunday, August 23, 2026 UTC

    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

  • Runway 23
  • 1535 ft AGL at event
  • 130 kt ground speed
  • 0 fpm vertical
  • Approach stability 40/100
  • 0 kt wind
  • 0 kt crosswind component
  • 16,093 m visibility
  • METAR KCPS 160253Z AUTO 18004KT 10SM FEW120 27/22 A3008 RMK AO2 SLP181 T02670222 53009 $

Flight context

  • SWA3912
  • Southwest Airlines
  • B737
  • KECP → KCPS
  • 2026-08-17 23:32 UTC
  • KCPS runway 23

All events on this flight

Unstable approach 23:32:47 UTC · KCPS runway 23 · 1,535 ft AGL · 130 kt GS
Diversion 23:35:33 UTC · KCPS runway 05 · 409 ft AGL · 120 kt GS
Unstable approach 23:32:47 UTC · KCPS runway 23 · 1,535 ft AGL · 130 kt GS

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

SkyMeter · trace data observed via ADS-B· KCPS