Unstable approach — UAL3926

UAL3926 (United Airlines) was operating from KPDX to KORD on 2026-07-03. SkyMeter detected a low approach-stability score at Chicago O'Hare International Airport (KORD) on runway 22R at 23:29 UTC. Trace data at the event: 1787 ft AGL, 130 kt GS. Approach stability score: 44/100. 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 3 kt wind, 3 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.

• SECURITY6/4158 2026-06-01 06:00Z – 2026-07-21 05:59Z SFC–400 ft

  MERIDIAN, ID, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4159 2026-06-01 06:00Z – 2026-07-21 05:59Z SFC–400 ft

  Boise, ID, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4040 2026-06-01 07:00Z – 2026-07-21 06:59Z SFC–400 ft

  Portland, OR, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4041 2026-06-01 07:00Z – 2026-07-21 06:59Z SFC–400 ft

  PORTLAND, OR, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• HAZARDS6/9554 2026-06-22 13:00Z – 2026-07-06 04:00Z SFC–10,000 ft

  37NM SW GRANGEVILLE, ID, Monday, June 22, 2026 through Monday, July 6, 2026 UTC

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• HAZARDS6/9557 2026-06-22 13:00Z – 2026-07-07 04:00Z SFC–10,000 ft

  37NM SW GRANGEVILLE, ID, Monday, June 22, 2026 through Tuesday, July 7, 2026 UTC

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• HAZARDS6/0613 2026-06-25 13:00Z – 2026-07-08 03:00Z SFC–14,500 ft

  27NM SW JACKSON, WY, Thursday, June 25, 2026 through Wednesday, July 8, 2026 UTC

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• HAZARDS6/0606 2026-06-25 14:00Z – 2026-07-10 04:00Z SFC–10,000 ft

  37NM SW GRANGEVILLE, ID, Thursday, June 25, 2026 through Friday, July 10, 2026 UTC

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• HAZARDS6/0614 2026-06-25 14:00Z – 2026-07-10 04:00Z SFC–10,000 ft

  37NM SW GRANGEVILLE, ID, Thursday, June 25, 2026 through Friday, July 10, 2026 UTC

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• HAZARDS6/1022 2026-06-27 14:00Z – 2026-07-12 04:00Z SFC–10,000 ft

  37NM SW GRANGEVILLE, ID, Saturday, June 27, 2026 through Sunday, July 12, 2026 UTC

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• HAZARDS6/1023 2026-06-27 14:00Z – 2026-07-12 04:00Z SFC–10,000 ft

  37NM SW GRANGEVILLE, ID, Saturday, June 27, 2026 through Sunday, July 12, 2026 UTC

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• HAZARDS6/1247 2026-06-28 22:17Z – 2026-07-10 16:00Z SFC–5,500 ft

  7NM NW THE DALLES, OR, Sunday, June 28, 2026 through Friday, July 10, 2026 UTC

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• HAZARDS6/1675 2026-06-29 21:09Z – 2026-07-13 04:00Z SFC–6,000 ft

  75 ZSE AIRSPACE 13NM SE PASCO, WA, Monday, June 29, 2026 through Monday, July 13, 2026 UTC

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• HAZARDS6/1598 2026-06-30 15:00Z – 2026-07-11 23:00Z SFC–5,500 ft

  7NM NW THE DALLES, OR, Tuesday, June 30, 2026 through Saturday, July 11, 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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• HAZARDS6/1787 2026-06-30 15:00Z – 2026-07-14 04:00Z SFC–6,000 ft

  13NM SE PASCO, WA, Tuesday, June 30, 2026 through Tuesday, July 14, 2026 UTC

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• HAZARDS6/2268 2026-07-01 13:00Z – 2026-07-14 03:00Z SFC–14,500 ft

  27NM SE JACKSON, WY, Wednesday, July 1, 2026 through Tuesday, July 14, 2026 UTC

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• HAZARDS6/2576 2026-07-02 13:00Z – 2026-07-16 02:00Z SFC–10,000 ft

  38NM SW GRANGEVILLE, ID, Thursday, July 2, 2026 through Thursday, July 16, 2026 UTC

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• HAZARDS6/2586 2026-07-02 13:00Z – 2026-07-16 02:00Z SFC–10,000 ft

  38NM SW GRANGEVILLE, ID, Thursday, July 2, 2026 through Thursday, July 16, 2026 UTC

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• 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

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• 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

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• 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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• HAZARDS6/2839 2026-07-03 22:52Z – 2026-07-11 03:00Z SFC–6,000 ft

  5NM NE THE DALLES, OR, Friday, July 3, 2026 through Saturday, July 11, 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