Unstable approach — UAL178

UAL178 (United Airlines) was operating from LIRF to KDEN on 2026-07-24. SkyMeter detected a low approach-stability score at Denver International Airport (KDEN) on runway 25 at 23:49 UTC. Trace data at the event: 6493 ft AGL, 173 kt GS. Approach stability score: 32/100. 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 5 kt wind, 5 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.

• SECURITY5/2811 2025-10-20 12:00Z – 2026-10-20 12:00Z SFC–1,000 ft

  NEW YORK, NY, Monday, October 20, 2025 through Tuesday, October 20, 2026 Local

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• SECURITY6/4348 2026-03-08 07:00Z – 2026-11-01 06:59Z SFC–2,400 ft

  GRAND FORKS AFB, ND, Sunday, March 8, 2026 through Sunday, November 1, 2026 Local

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• SECURITY6/2790 2026-07-02 22:30Z – 2026-09-15 03:59Z SFC–400 ft

  St. George, ME, Thursday, July 2, 2026 through Monday, September 14, 2026 Local

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• HAZARDS6/6777 2026-07-19 19:05Z – 2026-08-20 07:00Z SFC–7,000 ft

  10NM N ELY, MN, Sunday, July 19, 2026 through Thursday, August 20, 2026 UTC

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• HAZARDS6/6779 2026-07-19 19:09Z – 2026-08-20 07:00Z SFC–7,000 ft

  20NM N ELY, MN, Sunday, July 19, 2026 through Thursday, August 20, 2026 UTC

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• HAZARDS6/6899 2026-07-20 14:30Z – 2026-08-02 06:00Z SFC–7,000 ft

  14NM N ORR, MN, Monday, July 20, 2026 through Sunday, August 2, 2026 UTC

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• HAZARDS6/7199 2026-07-21 14:00Z – 2026-08-03 02:00Z SFC–7,000 ft

  20NM N ELY, MN, Tuesday, July 21, 2026 through Monday, August 3, 2026 UTC

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• AIR SHOWS/SPORTS6/6432 2026-07-23 01:00Z – 2026-07-26 03:30Z

  OSHKOSH, WI, Thursday, July 23, 2026 through Sunday, July 26, 2026 UTC

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• SECURITY6/7186 2026-07-23 10:30Z – 2026-07-27 01:30Z SFC–400 ft

  Blaine, MN, Thursday, July 23, 2026 through Sunday, July 26, 2026 Local

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• UAS PUBLIC GATHERING6/6520 2026-07-23 13:00Z – 2026-07-26 04:00Z SFC–400 ft

  sterling heights, MI, Thursday, July 23, 2026 through Sunday, July 26, 2026 UTC

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• SECURITY6/7851 2026-07-23 17:00Z – 2026-07-27 04:59Z SFC–400 ft

  Westfield, IN, Thursday, July 23, 2026 through Sunday, July 26, 2026 Local

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• SECURITY6/8361 2026-07-24 13:00Z – 2026-07-27 04:59Z SFC–400 ft

  Westfield, IN, Friday, July 24, 2026 through Sunday, July 26, 2026 Local

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• HAZARDS6/8143 2026-07-24 15:30Z – 2026-07-24 16:30Z SFC–4,500 ft

  NASHWAUK, MN, Friday, July 24, 2026 UTC

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• AIR SHOWS/SPORTS6/7755 2026-07-24 16:00Z – 2026-07-26 22:00Z SFC–17,000 ft

  milwaukee, WI, Friday, July 24, 2026 through Sunday, July 26, 2026 UTC

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• UAS PUBLIC GATHERING6/6522 2026-07-24 17:30Z – 2026-07-27 04:00Z SFC–400 ft

  chicago, IL, Friday, July 24, 2026 through Monday, July 27, 2026 UTC

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• AIR SHOWS/SPORTS6/6524 2026-07-24 19:15Z – 2026-07-26 22:00Z SFC–16,000 ft

  Oshkosh, WI, Friday, July 24, 2026 through Sunday, July 26, 2026 UTC

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• AIR SHOWS/SPORTS6/6526 2026-07-24 19:15Z – 2026-07-26 22:00Z

  OSHKOSH, WI, Friday, July 24, 2026 through Sunday, July 26, 2026 UTC

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• SECURITY6/6759 2026-07-24 20:00Z – 2026-07-26 04:00Z SFC–400 ft

  Ann Arbor, MI, Friday, July 24, 2026 through Sunday, July 26, 2026 Local

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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