Unstable approach — N89MD

KBIS · 31

2026-07-20 23:00 UTC· KPSC → KBIS· FUTURESOURCE CAPITAL CORP, MONTANA-DAKOTA UTILITIES (MDU) CO· C560

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N89MD (Futuresource Capital) was operating from KPSC to KBIS on 2026-07-20. SkyMeter detected a low approach-stability score at Bismarck Municipal Airport (KBIS) on runway 31 at 23:00 UTC. Trace data at the event: 2725 ft AGL, 190 kt GS. Approach stability score: 52/100. Scores in this band occur on roughly 10-15% of approaches at this runway, with multiple gates outside the per-runway envelope. METAR at the time reported 25 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.

Active FAA TFR during this flight

Source: FAA TFR archive (hourly snapshot)
  • 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

    View FAA NOTAM →
  • HAZARDS6/6568 2026-07-18 01:12Z – 2026-07-31 03:00Z SFC–6,000 ft

    48NM NE KENNEWICK, WA, Saturday, July 18, 2026 through Friday, July 31, 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 31
  • 2725 ft AGL at event
  • 190 kt ground speed
  • 0 fpm vertical
  • Approach stability 52/100
  • 25 kt wind
  • 1 kt crosswind component
  • 16,093 m visibility
  • SPECI KBIS 261822Z 21007KT 10SM FEW008 BKN026 OVC030 19/18 A2986 RMK AO2 RAE13 P0000 T01940178

Flight context

  • N89MD
  • Futuresource Capital
  • C560
  • KPSC → KBIS
  • 2026-07-20 23:00 UTC
  • KBIS runway 31

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· KBIS