Unstable approach — UAL557

UAL557 (United Airlines) was operating from KBIL to KFTG on 2026-08-10. SkyMeter detected a low approach-stability score at Colorado Air and Space Port (KFTG) on runway 36 at 14:24 UTC. Trace data at the event: 6571 ft AGL, 182 kt GS. Approach stability score: 44/100. 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 7 kt wind, 6 kt crosswind component. 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.

• HAZARDS6/1471 2026-08-04 14:00Z – 2026-08-19 04:00Z SFC–9,500 ft

  33NM SW BROADUS, MT, Tuesday, August 4, 2026 through Wednesday, August 19, 2026 UTC

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• HAZARDS6/2768 2026-08-07 14:00Z – 2026-08-22 04:00Z SFC–12,500 ft

  8NM SW RIFLE, CO, Friday, August 7, 2026 through Saturday, August 22, 2026 UTC

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• HAZARDS6/3139 2026-08-09 22:49Z – 2026-08-11 04:00Z SFC–16,000 ft

  13NM SE LANDER, WY, Sunday, August 9, 2026 through Tuesday, August 11, 2026 UTC

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• HAZARDS6/3161 2026-08-10 12:00Z – 2026-08-25 03:30Z SFC–16,000 ft

  13NM SE LANDER, WY, Monday, August 10, 2026 through Tuesday, August 25, 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