Unstable approach — UAL645

UAL645 (UMB Bank NA) was operating from KTPA to KDEN on 2026-07-23. SkyMeter detected a low approach-stability score at Denver International Airport (KDEN) on runway 25 at 20:04 UTC. Trace data at the event: 6479 ft AGL, 176 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 9 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.

• SECURITY6/4240 2026-03-08 08:00Z – 2026-11-01 07:00Z SFC–180 ft

  SAN ANGELO, TX, Sunday, March 8, 2026 through Sunday, November 1, 2026 Local

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• HAZARDS6/6155 2026-07-16 16:00Z – 2026-07-23 23:00Z SFC–1,500 ft

  0NM W INGRAM, TX, Thursday, July 16, 2026 through Thursday, July 23, 2026 UTC

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• HAZARDS6/6156 2026-07-16 16:09Z – 2026-07-23 23:00Z SFC–1,500 ft

  1NM SE KERRVILLE, TX, Thursday, July 16, 2026 through Thursday, July 23, 2026 UTC

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• HAZARDS6/6157 2026-07-16 16:15Z – 2026-07-23 23:00Z SFC–1,500 ft

  1NM NW BOERNE, TX, Thursday, July 16, 2026 through Thursday, July 23, 2026 UTC

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• HAZARDS6/6158 2026-07-16 16:23Z – 2026-07-23 23:00Z SFC–1,500 ft

  3NM SW UVALDE, TX, Thursday, July 16, 2026 through Thursday, July 23, 2026 UTC

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• HAZARDS6/6217 2026-07-16 18:17Z – 2026-07-23 23:00Z SFC–1,500 ft

  1NM W INGRAM, TX, Thursday, July 16, 2026 through Thursday, July 23, 2026 UTC

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• HAZARDS6/6218 2026-07-16 18:17Z – 2026-07-23 23:00Z SFC–1,500 ft

  1NM SE KERRVILLE, TX, Thursday, July 16, 2026 through Thursday, July 23, 2026 UTC

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• HAZARDS6/6528 2026-07-17 19:40Z – 2026-07-24 05:00Z SFC–1,500 ft

  CRYSTAL CITY, TX, Friday, July 17, 2026 through Friday, July 24, 2026 UTC

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• HAZARDS6/7482 2026-07-21 18:00Z – 2026-07-23 18:00Z SFC–1,500 ft

  TILDEN, TX, Tuesday, July 21, 2026 through Thursday, July 23, 2026 UTC

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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.

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