Unstable approach — SWA3397

SWA3397 (Southwest Airlines) was operating from KSEA to KDEN on 2026-07-11. SkyMeter detected a low approach-stability score at Denver International Airport (KDEN) on runway 25 at 19:04 UTC. Trace data at the event: 6485 ft AGL, 174 kt GS. Approach stability score: 38/100. 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 6 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.

• SECURITY6/4167 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

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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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• SECURITY6/4158 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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• SECURITY6/4033 2026-06-01 07:00Z – 2026-07-21 06:59Z SFC–400 ft

  RENTON, WA, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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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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• HAZARDS6/1675 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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• HAZARDS6/1787 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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• HAZARDS6/1598 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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• HAZARDS6/2268 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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• HAZARDS6/2586 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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• 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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• SECURITY6/7864 2026-07-03 15:07Z – 2026-07-21 05:59Z SFC–400 ft

  Sandy, UT

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• SECURITY6/7862 2026-07-03 16:07Z – 2026-07-21 05:59Z SFC–400 ft

  Salt Lake City, UT

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• HAZARDS6/2989 2026-07-05 17:35Z – 2026-07-20 05:00Z SFC–7,000 ft

  15NM E PENDLETON, OR, Sunday, July 5, 2026 through Monday, July 20, 2026 UTC

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• HAZARDS6/3000 2026-07-05 20:27Z – 2026-07-13 05:00Z SFC–8,000 ft

  3NM E WENATCHEE, WA, Sunday, July 5, 2026 through Monday, July 13, 2026 UTC

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• HAZARDS6/3022 2026-07-06 14:00Z – 2026-07-20 05:00Z SFC–8,000 ft

  15NM E PENDLETON, OR, Monday, July 6, 2026 through Monday, July 20, 2026 UTC

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• HAZARDS6/3024 2026-07-06 15:00Z – 2026-07-13 05:00Z SFC–8,000 ft

  3NM E WENATCHEE, WA, Monday, July 6, 2026 through Monday, July 13, 2026 UTC

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• SECURITY6/3019 2026-07-07 14:00Z – 2026-07-13 03:00Z SFC–400 ft

  Sun Valley, ID, Tuesday, July 7, 2026 through Sunday, July 12, 2026 Local

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• HAZARDS6/3388 2026-07-07 14:00Z – 2026-07-21 04:00Z SFC–10,000 ft

  17NM NE WINNEMUCCA, NV, Tuesday, July 7, 2026 through Tuesday, July 21, 2026 UTC

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• HAZARDS6/3783 2026-07-08 01:08Z – 2026-07-22 05:00Z SFC–10,000 ft

  40NM NW BASQUE, OR, Wednesday, July 8, 2026 through Wednesday, July 22, 2026 UTC

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• HAZARDS6/3798 2026-07-08 01:35Z – 2026-07-22 05:00Z SFC–10,000 ft

  40NM NW BASQUE, OR, Wednesday, July 8, 2026 through Wednesday, July 22, 2026 UTC

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• HAZARDS6/3807 2026-07-08 15:00Z – 2026-07-22 15:00Z SFC–9,000 ft

  10NM SE FALL RIVER MILLS, CA, Wednesday, July 8, 2026 through Wednesday, July 22, 2026 UTC

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• HAZARDS6/4014 2026-07-08 16:17Z – 2026-07-22 15:00Z SFC–9,000 ft

  10NM SE FALL RIVER MILLS, CA, Wednesday, July 8, 2026 through Wednesday, July 22, 2026 UTC

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• SECURITY6/7871 2026-07-09 11:07Z – 2026-07-21 05:59Z SFC–400 ft

  Boise, ID

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• SECURITY6/7869 2026-07-09 11:07Z – 2026-07-21 05:59Z SFC–400 ft

  Meridian, ID

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• HAZARDS6/4242 2026-07-09 13:00Z – 2026-07-23 05:00Z SFC–11,000 ft

  25 NM NE JOHN DAY, OR, Thursday, July 9, 2026 through Thursday, July 23, 2026 UTC

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• HAZARDS6/4238 2026-07-09 13:00Z – 2026-07-23 05:00Z SFC–11,000 ft

  25 NM NE JOHN DAY, OR, Thursday, July 9, 2026 through Thursday, July 23, 2026 UTC

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• HAZARDS6/4239 2026-07-09 14:00Z – 2026-07-23 05:00Z SFC–11,500 ft

  20NM NW BAKER CITY, OR, Thursday, July 9, 2026 through Thursday, July 23, 2026 UTC

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• HAZARDS6/4558 2026-07-10 04:00Z – 2026-07-21 15:00Z SFC–9,000 ft

  10NM SE FALL RIVER MILLS, CA, Friday, July 10, 2026 through Tuesday, July 21, 2026 UTC

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• HAZARDS6/4559 2026-07-10 04:00Z – 2026-07-21 15:00Z SFC–9,000 ft

  10NM SE FALL RIVER MILLS, CA, Friday, July 10, 2026 through Tuesday, July 21, 2026 UTC

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• HAZARDS6/4548 2026-07-10 14:00Z – 2026-07-24 05:00Z SFC–11,500 ft

  20NM NW BAKER CITY, OR, Friday, July 10, 2026 through Friday, July 24, 2026 UTC

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• HAZARDS6/4549 2026-07-10 14:00Z – 2026-07-24 05:00Z SFC–11,500 ft

  20NM NW BAKER CITY, OR, Friday, July 10, 2026 through Friday, July 24, 2026 UTC

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• HAZARDS6/4555 2026-07-10 14:00Z – 2026-07-23 04:00Z SFC–10,500 ft

  44NM NE WELLS, NV, Friday, July 10, 2026 through Thursday, July 23, 2026 UTC

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• HAZARDS6/4906 2026-07-11 02:45Z – 2026-07-24 04:00Z SFC–14,000 ft

  7NM N OREM, UT, Saturday, July 11, 2026 through Friday, July 24, 2026 UTC

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• HAZARDS6/4908 2026-07-11 14:00Z – 2026-07-25 04:00Z SFC–8,000 ft

  35NM E LEWISTON, ID, Saturday, July 11, 2026 through Saturday, July 25, 2026 UTC

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• SPACE OPERATIONS6/3530 2026-07-11 15:00Z – 2026-07-12 06:00Z SFC–350 ft

  30 ZLC AIRSPACE BLACK ROCK, NV, Saturday, July 11, 2026 through Sunday, July 12, 2026 UTC

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• HAZARDS6/4953 2026-07-11 18:45Z – 2026-07-13 04:00Z SFC–7,500 ft

  OGDEN, UT, Saturday, July 11, 2026 through Monday, July 13, 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