Unstable approach — CBC871

CBC871 (Registration Pending) was operating from KAPA to KSTS on 2026-09-02. SkyMeter detected a low approach-stability score at Charles M. Schulz Sonoma County Airport (KSTS) on runway 14 at 19:24 UTC. Trace data at the event: 1232 ft AGL, 136 kt GS. Approach stability score: 59/100. 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 5 kt wind, 4 kt crosswind component, 14,484 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.

• SECURITY6/3475 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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• SECURITY6/5797 2026-04-03 00:01Z – 2026-09-28 23:59Z SFC–400 ft

  SACRAMENTO, CA, Thursday, April 2, 2026 through Monday, September 28, 2026 Local

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• SECURITY6/6491 2026-07-20 07:01Z – 2026-09-16 06:59Z SFC–1,499 ft

  Concord, CA, Monday, July 20, 2026 through Tuesday, September 15, 2026 Local

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• HAZARDS6/7092 2026-08-22 13:00Z – 2026-09-04 03:00Z SFC–14,000 ft

  26NM SW PRICE, UT, Saturday, August 22, 2026 through Friday, September 4, 2026 UTC

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• HAZARDS6/7113 2026-08-22 20:30Z – 2026-09-05 03:00Z SFC–11,500 ft

  1NM W RENO, NV, Saturday, August 22, 2026 through Saturday, September 5, 2026 UTC

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• HAZARDS6/7115 2026-08-22 23:30Z – 2026-09-04 03:00Z SFC–13,000 ft

  41NM E PRICE, UT, Saturday, August 22, 2026 through Friday, September 4, 2026 UTC

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• HAZARDS6/7127 2026-08-23 05:30Z – 2026-09-06 03:00Z SFC–11,500 ft

  1NM W RENO, NV, Sunday, August 23, 2026 through Sunday, September 6, 2026 UTC

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• HAZARDS6/7283 2026-08-23 16:00Z – 2026-09-06 03:00Z SFC–11,500 ft

  1NM W RENO, NV, Sunday, August 23, 2026 through Sunday, September 6, 2026 UTC

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• HAZARDS6/7463 2026-08-25 12:00Z – 2026-09-08 08:00Z SFC–16,500 ft

  1NM NE OURAY, CO, Tuesday, August 25, 2026 through Tuesday, September 8, 2026 UTC

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• HAZARDS6/8805 2026-08-28 15:00Z – 2026-09-04 04:00Z SFC–11,500 ft

  1NM W RENO, NV, Friday, August 28, 2026 through Friday, September 4, 2026 UTC

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• HAZARDS6/0223 2026-09-02 02:30Z – 2026-09-16 03:00Z SFC–8,000 ft

  30NM NE MERCED, CA, Wednesday, September 2, 2026 through Wednesday, September 16, 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.

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