Unstable approach — SWA4664

KSTL · 12R

2026-06-11 19:32 UTC· IL77 → KSTL· UMB BANK NA TRUSTEE· B738

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SWA4664 (UMB Bank NA) was operating from IL77 to KSTL on 2026-06-11. SkyMeter detected a low approach-stability score at St Louis Lambert International Airport (KSTL) on runway 12R at 19:32 UTC. Trace data at the event: 1694 ft AGL, 164 kt GS. Approach stability score: 58/100. Scores in this band occur on roughly 10-15% of approaches at this runway, with multiple gates outside the per-runway envelope. METAR at the time reported 13 kt wind, 13 kt crosswind component, 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)
  • SECURITY6/4161 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

    St, Louis, MO, Monday, June 1, 2026 through Monday, July 20, 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

  • Runway 12R
  • 1694 ft AGL at event
  • 164 kt ground speed
  • 0 fpm vertical
  • Approach stability 58/100
  • 13 kt wind
  • 13 kt crosswind component
  • 16,093 m visibility
  • KSTL 131930Z AUTO 20010KT 10SM CLR 33/20 A2989 RMK T03300200 MADISHF

Flight context

  • SWA4664
  • UMB Bank NA
  • B738
  • IL77 → KSTL
  • 2026-06-11 19:32 UTC
  • KSTL runway 12R

All events on this flight

Unstable approach 19:32:35 UTC · KSTL runway 12R · 1,694 ft AGL · 164 kt GS
Unstable approach 19:32:35 UTC · KSTL runway 12R · 1,694 ft AGL · 164 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· KSTL