Unstable approach — N155CG

N155CG (Bigees AIR) was inbound to KFSD on 2026-05-28. SkyMeter detected a low approach-stability score at Joe Foss Field Airport (KFSD) on runway 15 at 23:31 UTC. Trace data at the event: 2514 ft AGL, 144 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 10 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.

• HAZARDS6/0887 2026-05-16 18:37Z – 2026-05-30 04:00Z SFC–10,500 ft

  19NM SW TUCUMCARI, NM, Saturday, May 16, 2026 through Saturday, May 30, 2026 UTC

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• HAZARDS6/1358 2026-05-19 00:52Z – 2026-06-02 02:00Z SFC–10,000 ft

  5NM S CAMPO, CO, Tuesday, May 19, 2026 through Tuesday, June 2, 2026 UTC

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• HAZARDS6/2580 2026-05-24 14:00Z – 2026-05-30 04:00Z SFC–10,000 ft

  30NM SW WINNEMUCCA, NV, Sunday, May 24, 2026 through Saturday, May 30, 2026 UTC

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• HAZARDS6/2645 2026-05-25 14:00Z – 2026-05-30 04:00Z SFC–10,000 ft

  30NM SW WINNEMUCCA, NV, Monday, May 25, 2026 through Saturday, May 30, 2026 UTC

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• HAZARDS6/2646 2026-05-25 15:00Z – 2026-06-08 04:00Z SFC–11,000 ft

  22NM SE JACKSON, WY, Monday, May 25, 2026 through Monday, June 8, 2026 UTC

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• AIR SHOWS/SPORTS6/2211 2026-05-26 18:00Z – 2026-05-28 20:30Z SFC–17,999 ft

  Colorado Springs, CO, Tuesday, May 26, 2026 through Thursday, May 28, 2026 UTC

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• HAZARDS6/3703 2026-05-28 15:12Z – 2026-05-29 04:00Z SFC–13,000 ft

  38NM SE TWIN FALLS, ID, Thursday, May 28, 2026 through Friday, May 29, 2026 UTC

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• VIP6/2912 2026-05-28 18:00Z – 2026-05-28 22:00Z SFC–4,999 ft

  Denver, CO, Thursday, May 28, 2026 Local

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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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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