Unstable approach — ASA647

ASA647 (Alaska Airlines) was operating from KSTL to KRNT on 2026-06-09. SkyMeter detected a low approach-stability score at Renton Municipal Airport (KRNT) on runway 16 at 04:37 UTC. Trace data at the event: 1116 ft AGL, 134 kt GS. Approach stability score: 42/100. 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 4 kt wind, 1 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.

• SECURITY6/4348 2026-03-08 07:00Z – 2026-11-01 06:59Z SFC–2,400 ft

  GRAND FORKS AFB, ND, Sunday, March 8, 2026 through Sunday, November 1, 2026 Local

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• 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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• HAZARDS6/3585 2026-05-28 14:00Z – 2026-06-11 03:00Z SFC–9,000 ft

  74NM S MILES CITY, MT, Thursday, May 28, 2026 through Thursday, June 11, 2026 UTC

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• HAZARDS6/3649 2026-05-28 14:00Z – 2026-06-11 03:00Z SFC–9,000 ft

  74NM S MILES CITY, MT, Thursday, May 28, 2026 through Thursday, June 11, 2026 UTC

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• 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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• HAZARDS6/3574 2026-05-29 14:00Z – 2026-06-10 02:00Z SFC–13,000 ft

  38NM SE TWIN FALLS, ID, Friday, May 29, 2026 through Wednesday, June 10, 2026 UTC

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• HAZARDS6/3888 2026-05-29 14:00Z – 2026-06-10 04:00Z SFC–13,000 ft

  38NM SE TWIN FALLS, ID, Friday, May 29, 2026 through Wednesday, June 10, 2026 UTC

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• HAZARDS6/3908 2026-05-29 14:00Z – 2026-06-12 04:00Z SFC–9,000 ft

  23NM SE GLENDIVE, MT, Friday, May 29, 2026 through Friday, June 12, 2026 UTC

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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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• SECURITY6/4146 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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• SECURITY6/4155 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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• SECURITY6/4013 2026-06-01 07:00Z – 2026-07-21 06:59Z SFC–400 ft

  Seattle, WA, 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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• HAZARDS6/4940 2026-06-02 14:18Z – 2026-06-09 23:30Z SFC–6,500 ft

  10NM NW ELY, MN, Tuesday, June 2, 2026 through Tuesday, June 9, 2026 UTC

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• HAZARDS6/5782 2026-06-05 02:29Z – 2026-06-11 06:00Z SFC–6,500 ft

  20NM E YAKIMA, WA, Friday, June 5, 2026 through Thursday, June 11, 2026 UTC

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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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• 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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• HAZARDS6/6143 2026-06-08 15:00Z – 2026-06-13 04:00Z SFC–8,000 ft

  3NM S CHELAN, WA, Monday, June 8, 2026 through Saturday, June 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.

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