Unstable approach — UAL789

UAL789 was operating from KDEN to KDCA on 2026-07-18. SkyMeter detected a low approach-stability score at Ronald Reagan Washington National Airport (KDCA) on runway 19 at 19:41 UTC. Trace data at the event: 1124 ft AGL, 172 kt GS. Approach stability score: 43/100. 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 13 kt wind, 7 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.

• SECURITY6/3996 2026-06-01 00:00Z – 2026-07-20 23:59Z

  OKLAHOMA CITY, OK, Monday, June 1, 2026 through Monday, July 20, 2026 UTC

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• SECURITY6/4134 2026-06-01 00:00Z – 2026-07-20 23:59Z

  TULSA, OK, Monday, June 1, 2026 through Monday, July 20, 2026 UTC

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• SECURITY6/3954 2026-06-01 00:00Z – 2026-07-20 23:59Z

  STILLWATER, OK, Monday, June 1, 2026 through Monday, July 20, 2026 UTC

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• SECURITY6/4116 2026-06-01 04:00Z – 2026-07-21 03:59Z SFC–400 ft

  LOUISVILLE, KY, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4114 2026-06-01 04:00Z – 2026-07-21 03:59Z SFC–400 ft

  LOUISVILLE, KY, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/3971 2026-06-01 04:00Z – 2026-07-21 03:59Z SFC–400 ft

  Winston Salem, NC, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/3980 2026-06-01 04:00Z – 2026-07-21 03:59Z SFC–400 ft

  CHATTANOOGA, TN, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/3990 2026-06-01 04:00Z – 2026-07-21 03:59Z SFC–400 ft

  CHATTANOOGA, TN, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4125 2026-06-01 04:00Z – 2026-07-21 03:59Z SFC–400 ft

  MILFORD, OH, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4120 2026-06-01 04:00Z – 2026-07-21 03:59Z SFC–400 ft

  CINNCINATI, OH, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4001 2026-06-01 04:00Z – 2026-07-21 03:59Z SFC–400 ft

  GREENSBORO, NC, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/3970 2026-06-01 04:00Z – 2026-07-21 03:59Z SFC–400 ft

  White Sulphur Springs, WV, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4005 2026-06-01 04:00Z – 2026-07-21 03:59Z SFC–400 ft

  Greensboro, NC, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4007 2026-06-01 04:00Z – 2026-07-21 03:59Z SFC–400 ft

  Charlotte, NC, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/3968 2026-06-01 04:00Z – 2026-07-21 03:59Z SFC–400 ft

  Winston Salem, NC, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4004 2026-06-01 04:00Z – 2026-07-21 03:59Z SFC–400 ft

  CHARLOTTE, NC, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4022 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

  OKLAHOMA CITY, OK, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4119 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

  NASHVILLE, TN, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/3997 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

  NORMAN, OK, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4121 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

  Nashville, TN, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4206 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

  Kansas City, MO, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/3952 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

  Stillwater, OK, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4135 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

  CLAYTON, MO, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4141 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

  Tulsa, OK, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4162 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

  Kansas City, MO, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4146 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

  Lawrence, KS, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4151 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

  Kansas City, MO, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4154 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

  Kansas City, KS, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4155 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

  Riverside, MO, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4157 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

  PRAIRIE VILLAGE, KS, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• 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

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• SECURITY6/4149 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

  Lawrence, KS, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/7589 2026-06-29 15:07Z – 2026-07-21 03:59Z SFC–400 ft

  Charlotte, NC

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• SECURITY6/7590 2026-06-29 15:07Z – 2026-07-21 03:59Z SFC–400 ft

  Charlotte, NC

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• SECURITY6/7169 2026-06-29 15:07Z – 2026-07-21 03:59Z SFC–400 ft

  White Sulphur Springs, WV

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• SECURITY6/7972 2026-07-01 16:07Z – 2026-07-21 04:59Z SFC–400 ft

  Nashville, TN

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• SECURITY6/7652 2026-07-01 16:07Z – 2026-07-21 04:59Z SFC–400 ft

  Riverside, MO

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• SECURITY6/7967 2026-07-01 16:07Z – 2026-07-21 04:59Z SFC–400 ft

  Nashville, TN

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• SECURITY6/7650 2026-07-01 16:07Z – 2026-07-21 04:59Z SFC–400 ft

  Kansas City, MO

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• SECURITY6/7646 2026-07-03 16:07Z – 2026-07-21 04:59Z SFC–400 ft

  Lawrence, KS

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• SECURITY6/7647 2026-07-03 16:07Z – 2026-07-21 04:59Z SFC–400 ft

  Lawrence, KS

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• SECURITY6/7599 2026-07-07 13:07Z – 2026-07-21 03:59Z SFC–400 ft

  Chattanooga, TN

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• SECURITY6/7600 2026-07-07 13:07Z – 2026-07-21 03:59Z SFC–400 ft

  Chattanooga, TN

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• SECURITY6/7591 2026-07-07 16:07Z – 2026-07-21 03:59Z SFC–400 ft

  Greensboro, NC

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• SECURITY6/7592 2026-07-07 16:07Z – 2026-07-21 03:59Z SFC–400 ft

  Greensboro, NC

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• HAZARDS6/3801 2026-07-08 01:49Z – 2026-07-23 04:00Z SFC–15,000 ft

  1NM W PUEBLO, CO, Wednesday, July 8, 2026 through Thursday, July 23, 2026 UTC

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• SECURITY6/7218 2026-07-09 11:07Z – 2026-07-21 03:59Z SFC–400 ft

  Cinncinati, OH

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• SECURITY6/7226 2026-07-09 11:07Z – 2026-07-21 03:59Z SFC–400 ft

  Milford, OH

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• SECURITY6/7197 2026-07-09 11:07Z – 2026-07-21 03:59Z SFC–400 ft

  Louisville, KY

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• SECURITY6/7651 2026-07-09 11:07Z – 2026-07-21 04:59Z SFC–400 ft

  Prairie Village, KS

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• SECURITY6/7817 2026-07-09 11:07Z – 2026-07-21 04:59Z SFC–400 ft

  St Louis, MO

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• HAZARDS6/5843 2026-07-14 23:37Z – 2026-07-22 23:45Z SFC–4,200 ft

  18NM SW WAYNESBORO, VA, Tuesday, July 14, 2026 through Wednesday, July 22, 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.

All events on this flight

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