Unstable approach — UAL3930

UAL3930 (United Airlines) was operating from KPHX to KORD on 2026-06-09. SkyMeter detected a low approach-stability score at Chicago O'Hare International Airport (KORD) on runway 36 at 21:24 UTC. Trace data at the event: 1773 ft AGL, 135 kt GS. Approach stability score: 33/100. 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 7 kt wind, 6 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.

• HAZARDS6/3889 2026-05-28 22:59Z – 2026-06-10 04:00Z SFC–10,500 ft

  11NM SE SPANISH FORK, UT, Thursday, May 28, 2026 through Wednesday, June 10, 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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• SECURITY6/3996 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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• SECURITY6/4157 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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• SECURITY6/3952 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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• SECURITY6/3997 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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• SECURITY6/4022 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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• SECURITY6/4141 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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• SECURITY6/4146 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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• SECURITY6/4149 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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• SECURITY6/4151 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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• SECURITY6/4161 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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• SECURITY6/4162 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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• SECURITY6/4164 2026-06-01 06:00Z – 2026-07-21 05:59Z SFC–400 ft

  Sandy, UT, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4167 2026-06-01 06:00Z – 2026-07-21 05:59Z SFC–400 ft

  Salt Lake City, UT, Monday, June 1, 2026 through Monday, July 20, 2026 Local

  View FAA NOTAM →
• SECURITY6/3948 2026-06-01 07:00Z – 2026-07-21 06:59Z

  MESA, AZ, Monday, June 1, 2026 through Tuesday, July 21, 2026 UTC

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• SECURITY6/5819 2026-06-08 13:00Z – 2026-06-10 21:00Z SFC–1,000 ft

  JEFFERSON CITY, MO, Monday, June 8, 2026 through Wednesday, June 10, 2026 Local

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• HAZARDS6/6224 2026-06-08 14:30Z – 2026-06-10 14:00Z SFC–10,500 ft

  31NM SW NEPHI, UT, Monday, June 8, 2026 through Wednesday, June 10, 2026 UTC

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• HAZARDS6/6577 2026-06-08 22:46Z – 2026-06-13 04:00Z SFC–11,500 ft

  13NM W NUCLA, CO, Monday, June 8, 2026 through Saturday, June 13, 2026 UTC

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• SECURITY6/6444 2026-06-09 05:01Z – 2026-06-28 04:59Z SFC–1,000 ft

  Kansas City, MO, Tuesday, June 9, 2026 through Saturday, June 27, 2026 Local

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• SECURITY6/5856 2026-06-09 14:00Z – 2026-06-09 21:00Z SFC–1,000 ft

  Kansas City, MO, Tuesday, June 9, 2026 Local

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• HAZARDS6/6225 2026-06-09 14:00Z – 2026-06-21 02:00Z SFC–10,500 ft

  31NM SW NEPHI, UT, Tuesday, June 9, 2026 through Sunday, June 21, 2026 UTC

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• HAZARDS6/6608 2026-06-09 15:00Z – 2026-06-22 04:00Z SFC–11,500 ft

  13NM W NUCLA, CO, Tuesday, June 9, 2026 through Monday, June 22, 2026 UTC

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• HAZARDS6/6751 2026-06-09 16:02Z – 2026-06-10 04:00Z SFC–10,000 ft

  14NM E FLAGSTAFF, AZ, Tuesday, June 9, 2026 through Wednesday, June 10, 2026 UTC

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• HAZARDS6/5826 2026-06-09 17:00Z – 2026-06-09 22:00Z SFC–2,000 ft

  MILTON, IL, Tuesday, June 9, 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