Unstable approach — UAL517

UAL517 (United Airlines) was operating from KBTV to KDEN on 2026-07-03. SkyMeter detected a low approach-stability score at Denver International Airport (KDEN) on runway 25 at 23:31 UTC. Trace data at the event: 6492 ft AGL, 178 kt GS. Approach stability score: 35/100. 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 4 kt wind, 4 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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• SECURITY6/3973 2026-06-01 04:00Z – 2026-07-21 03:59Z SFC–400 ft

  WILMINGTON, DE, Monday, June 1, 2026 through Monday, July 20, 2026 Local

  View FAA NOTAM →
• SECURITY6/3961 2026-06-01 04:00Z – 2026-07-21 03:59Z SFC–400 ft

  Chester, PA, Monday, June 1, 2026 through Monday, July 20, 2026 Local

  View FAA NOTAM →
• SECURITY6/4128 2026-06-01 04:00Z – 2026-07-21 03:59Z SFC–400 ft

  WESTFIELD, IN, Monday, June 1, 2026 through Monday, July 20, 2026 Local

  View FAA NOTAM →
• SECURITY6/4118 2026-06-01 04:00Z – 2026-07-21 03:59Z SFC–400 ft

  CARMEL, IN, Monday, June 1, 2026 through Monday, July 20, 2026 Local

  View FAA NOTAM →
• SECURITY6/4117 2026-06-01 04:00Z – 2026-07-21 03:59Z SFC–400 ft

  Warren, NJ, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4115 2026-06-01 04:00Z – 2026-07-21 03:59Z SFC–400 ft

  BASKING RIDGE, NJ, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4106 2026-06-01 04:00Z – 2026-07-21 03:59Z SFC–400 ft

  New Brunswick, NJ, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4105 2026-06-01 04:00Z – 2026-07-21 03:59Z SFC–400 ft

  JERSEY CITY, NJ, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/3967 2026-06-01 04:00Z – 2026-07-21 03:59Z SFC–400 ft

  PHILADELPHIA, PA, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/6442 2026-06-10 04:01Z – 2026-07-20 03:59Z SFC–1,000 ft

  Philadelphia, PA, Wednesday, June 10, 2026 through Sunday, July 19, 2026 Local

  View FAA NOTAM →
• SECURITY6/7230 2026-06-13 04:01Z – 2026-07-20 03:59Z SFC–1,000 ft

  New York, NY, Saturday, June 13, 2026 through Sunday, July 19, 2026 Local

  View FAA NOTAM →
• SECURITY6/6851 2026-06-13 04:01Z – 2026-07-12 03:59Z SFC–1,000 ft

  Harrison, NJ, Saturday, June 13, 2026 through Saturday, July 11, 2026 Local

  View FAA NOTAM →
• SECURITY6/7801 2026-06-15 04:00Z – 2026-07-07 03:29Z SFC–400 ft

  Whippany, NJ, Monday, June 15, 2026 through Monday, July 6, 2026 Local

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• SECURITY6/7205 2026-06-23 21:07Z – 2026-07-21 03:59Z SFC–400 ft

  Carmel, IN

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• SECURITY6/7208 2026-06-23 21:07Z – 2026-07-21 03:59Z SFC–400 ft

  Westfield, IN

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• SECURITY6/9462 2026-06-24 04:00Z – 2026-07-21 03:29Z SFC–400 ft

  Montclair, NJ, Wednesday, June 24, 2026 through Monday, July 20, 2026 Local

  View FAA NOTAM →
• SECURITY6/0081 2026-06-26 04:01Z – 2026-07-04 03:59Z SFC–400 ft

  New York, NY, Friday, June 26, 2026 through Friday, July 3, 2026 Local

  View FAA NOTAM →
• UAS PUBLIC GATHERING6/0131 2026-06-30 11:00Z – 2026-07-07 02:00Z SFC–400 ft

  Columbus, OH, Tuesday, June 30, 2026 through Tuesday, July 7, 2026 UTC

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• HAZARDS6/1781 2026-06-30 15:00Z – 2026-07-14 03:00Z SFC–8,000 ft

  9NM NW CRAWFORD, NE, Tuesday, June 30, 2026 through Tuesday, July 14, 2026 UTC

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• SECURITY6/1457 2026-07-01 11:00Z – 2026-07-06 02:00Z SFC–400 ft

  SILVIS, IL, Wednesday, July 1, 2026 through Sunday, July 5, 2026 Local

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• SECURITY6/1240 2026-07-01 12:00Z – 2026-07-09 16:00Z SFC–2,000 ft

  New York, NY, Wednesday, July 1, 2026 through Thursday, July 9, 2026 Local

  View FAA NOTAM →
• SECURITY6/1081 2026-07-01 12:00Z – 2026-07-09 16:00Z SFC–2,000 ft

  New York, NY, Wednesday, July 1, 2026 through Thursday, July 9, 2026 Local

  View FAA NOTAM →
• AIR SHOWS/SPORTS6/1384 2026-07-01 13:30Z – 2026-07-05 22:00Z SFC–16,000 ft

  battle Creek, MI, Wednesday, July 1, 2026 through Sunday, July 5, 2026 UTC

  View FAA NOTAM →
• AIR SHOWS/SPORTS6/0763 2026-07-02 15:45Z – 2026-07-06 19:00Z SFC–15,000 ft

  Jones Beach, NY, Thursday, July 2, 2026 through Monday, July 6, 2026 UTC

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• AIR SHOWS/SPORTS6/0764 2026-07-02 15:45Z – 2026-07-06 19:00Z SFC–15,000 ft

  Jones Beach, NY, Thursday, July 2, 2026 through Monday, July 6, 2026 UTC

  View FAA NOTAM →
• AIR SHOWS/SPORTS6/0780 2026-07-02 18:00Z – 2026-07-04 02:30Z SFC–15,000 ft

  Dubuque, IA, Thursday, July 2, 2026 through Saturday, July 4, 2026 UTC

  View FAA NOTAM →
• SECURITY6/2315 2026-07-03 16:00Z – 2026-07-05 04:59Z SFC–400 ft

  MILWAUKEE, WI, Friday, July 3, 2026 through Saturday, July 4, 2026 Local

  View FAA NOTAM →
• SECURITY6/7980 2026-07-03 16:07Z – 2026-07-21 03:59Z SFC–400 ft

  New Brunswick, NJ

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• SECURITY6/7194 2026-07-03 16:07Z – 2026-07-21 03:59Z SFC–400 ft

  Columbus, OH

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• UAS PUBLIC GATHERING6/1395 2026-07-03 20:30Z – 2026-07-03 22:30Z SFC–400 ft

  Pittsburg, PA, Friday, July 3, 2026 UTC

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• UAS PUBLIC GATHERING6/1393 2026-07-03 22:00Z – 2026-07-04 03:30Z SFC–400 ft

  Columbus, OH, Friday, July 3, 2026 through Saturday, July 4, 2026 UTC

  View FAA NOTAM →
• SECURITY6/1718 2026-07-03 22:30Z – 2026-07-04 04:15Z SFC–2,000 ft

  Box Elder, ND, Friday, July 3, 2026 through Friday, July 3, 2026 Local

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• UAS PUBLIC GATHERING6/1391 2026-07-03 22:30Z – 2026-07-05 04:30Z SFC–400 ft

  Iowa City, IA, Friday, July 3, 2026 through Sunday, July 5, 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.

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