Unstable approach — ASA4

ASA4 (Alaska Airlines) was operating from KSEA to KDCA on 2026-06-18. SkyMeter detected a low approach-stability score at Ronald Reagan Washington National Airport (KDCA) on runway 19 at 19:22 UTC. Trace data at the event: 1138 ft AGL, 160 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 15 kt wind, 14 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.

• SECURITY6/3475 2026-03-08 09:00Z – 2026-11-01 09:59Z SFC–180 ft

  BEALE AFB, CA, Sunday, March 8, 2026 through Sunday, November 1, 2026 Local

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• 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

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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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• SECURITY6/4125 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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• SECURITY6/4128 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

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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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• SECURITY6/4157 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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• SECURITY6/4162 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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• SECURITY6/4158 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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• SECURITY6/4164 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

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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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• SECURITY6/4034 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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• SECURITY6/4011 2026-06-01 07:00Z – 2026-07-21 06:59Z SFC–400 ft

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

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• HAZARDS6/5894 2026-06-05 20:31Z – 2026-06-19 02:00Z SFC–10,000 ft

  38NM SE TWIN FALLS, ID, Friday, June 5, 2026 through Friday, June 19, 2026 UTC

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• HAZARDS6/5936 2026-06-06 03:00Z – 2026-06-19 02:00Z SFC–7,500 ft

  27NM SE TWIN FALLS, ID, Saturday, June 6, 2026 through Friday, June 19, 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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• 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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• HAZARDS6/6827 2026-06-09 17:15Z – 2026-06-22 02:00Z SFC–10,000 ft

  9NM SW TOOELE, UT, Tuesday, June 9, 2026 through Monday, June 22, 2026 UTC

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• HAZARDS6/6965 2026-06-10 14:00Z – 2026-06-22 03:00Z SFC–10,000 ft

  9NM SW TOOELE, UT, Wednesday, June 10, 2026 through Monday, June 22, 2026 UTC

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• HAZARDS6/7480 2026-06-11 12:00Z – 2026-06-23 03:00Z SFC–9,500 ft

  24NM SW CHADRON, NE, Thursday, June 11, 2026 through Tuesday, June 23, 2026 UTC

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• UAS PUBLIC GATHERING6/5706 2026-06-11 14:00Z – 2026-06-23 04:00Z SFC–400 ft

  Omaha, NE, Thursday, June 11, 2026 through Tuesday, June 23, 2026 UTC

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• HAZARDS6/7811 2026-06-12 03:18Z – 2026-06-25 04:00Z SFC–12,500 ft

  29NM SE GLENWOOD SPRINGS, CO, Friday, June 12, 2026 through Thursday, June 25, 2026 UTC

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• HAZARDS6/8221 2026-06-14 20:07Z – 2026-06-28 03:00Z SFC–6,000 ft

  22NM SE RICHLAND, WA, Sunday, June 14, 2026 through Sunday, June 28, 2026 UTC

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• HAZARDS6/8252 2026-06-15 04:35Z – 2026-06-26 04:00Z SFC–5,500 ft

  12NM NE PASCO, WA, Monday, June 15, 2026 through Friday, June 26, 2026 UTC

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• HAZARDS6/8253 2026-06-15 15:00Z – 2026-06-30 05:00Z SFC–6,000 ft

  3NM W BENTON CITY, WA, Monday, June 15, 2026 through Tuesday, June 30, 2026 UTC

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• HAZARDS6/8503 2026-06-15 21:15Z – 2026-06-20 04:00Z SFC–6,500 ft

  20NM S YAKIMA, WA, Monday, June 15, 2026 through Saturday, June 20, 2026 UTC

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• HAZARDS6/8549 2026-06-16 02:58Z – 2026-06-30 04:00Z SFC–12,000 ft

  12NM NE GRAND JUNCTION, CO, Tuesday, June 16, 2026 through Tuesday, June 30, 2026 UTC

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• HAZARDS6/8752 2026-06-16 20:30Z – 2026-06-23 04:00Z SFC–6,500 ft

  12NM NE PASCO, WA, Tuesday, June 16, 2026 through Tuesday, June 23, 2026 UTC

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• HAZARDS6/8961 2026-06-17 15:50Z – 2026-06-24 04:00Z SFC–7,500 ft

  11NM NE YAKIMA, WA, Wednesday, June 17, 2026 through Wednesday, June 24, 2026 UTC

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• HAZARDS6/9121 2026-06-18 13:00Z – 2026-07-01 05:00Z SFC–7,000 ft

  10NM SE PENDLETON, OR, Thursday, June 18, 2026 through Wednesday, July 1, 2026 UTC

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• HAZARDS6/8821 2026-06-18 14:00Z – 2026-07-02 05:00Z SFC–7,500 ft

  34NM SE COEUR D'ALENE, ID, Thursday, June 18, 2026 through Thursday, July 2, 2026 UTC

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• HAZARDS6/9120 2026-06-18 14:00Z – 2026-06-24 05:00Z SFC–7,000 ft

  34NM SW PULLMAN, WA, Thursday, June 18, 2026 through Wednesday, June 24, 2026 UTC

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• SECURITY6/8416 2026-06-18 15:00Z – 2026-06-18 19:00Z SFC–4,999 ft

  Chicago, IL, Thursday, June 18, 2026 Local

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• HAZARDS6/9233 2026-06-18 16:23Z – 2026-06-19 04:00Z SFC–6,000 ft

  11NM NE YAKIMA, WA, Thursday, June 18, 2026 through Friday, June 19, 2026 UTC

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• HAZARDS6/8985 2026-06-18 16:30Z – 2026-06-18 18:30Z SFC–4,500 ft

  KEEWATIN, MN, Thursday, June 18, 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