Unstable approach — SKW4104

KBZN · 30

2026-06-06 21:00 UTC· KSEA → KBZN· SKYWEST AIRLINES INC· E75L

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SKW4104 (Skywest Airlines) was operating from KSEA to KBZN on 2026-06-06. SkyMeter detected a low approach-stability score at Gallatin Field (KBZN) on runway 30 at 21:00 UTC. Trace data at the event: 5516 ft AGL, 167 kt GS. Approach stability score: 47/100. 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 1 kt wind, 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.

Active FAA TFR during this flight

Source: FAA TFR archive (hourly snapshot)
  • 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

    View FAA NOTAM →
  • 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

    View FAA NOTAM →

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.

Pilot review data

  • Runway 30
  • 5516 ft AGL at event
  • 167 kt ground speed
  • 0 fpm vertical
  • Approach stability 47/100
  • 1 kt wind
  • 0 kt crosswind component
  • 16,093 m visibility
  • KBZN 142156Z 07003KT 10SM CLR 08/01 A3023 RMK AO2 SLP255 T00830006

Flight context

  • SKW4104
  • Skywest Airlines
  • E75L
  • KSEA → KBZN
  • 2026-06-06 21:00 UTC
  • KBZN runway 30

All events on this flight

Unstable approach 21:00:14 UTC · KBZN runway 30 · 5,516 ft AGL · 167 kt GS
Unstable approach 21:00:14 UTC · KBZN runway 30 · 5,516 ft AGL · 167 kt GS

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

SkyMeter · trace data observed via ADS-B· KBZN