Return to field — CUL561

KSTS · 14

2026-08-04 18:15 UTC· KSTS → KSTS· COULSON AVIATION USA INC· C560

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CUL561 (Coulson Aviation USA) had departed KSTS on 2026-08-04. SkyMeter detected a return to field at Charles M. Schulz Sonoma County Airport (KSTS) on runway 14 at 18:15 UTC. Peak altitude 13,328 ft, turnaround area near Rio Vista, US. Approach stability score: 29/100. 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 0 kt wind, 16,093 m visibility. Detection algorithm and known limitations: see SkyMeter methodology.

Active FAA TFR during this flight

Source: FAA TFR archive (hourly snapshot)
  • 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

    View FAA NOTAM →
  • HAZARDS6/1795 2026-08-04 20:57Z – 2026-08-18 04:00Z SFC–6,000 ft

    27NM NE STOCKTON, CA, Tuesday, August 4, 2026 through Tuesday, August 18, 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 14
  • 13328 ft AGL at event
  • 337 kt ground speed
  • 0 fpm vertical
  • Approach stability 29/100
  • 0 kt wind
  • 0 kt crosswind component
  • 16,093 m visibility
  • KSTS 162153Z 18011KT 10SM CLR 23/12 A2992 RMK AO2 SLP124 T02330117

Flight context

  • CUL561
  • Coulson Aviation USA
  • C560
  • KSTS → KSTS
  • 2026-08-04 18:15 UTC
  • KSTS runway 14

All events on this flight

Return to field 18:15:03 UTC · KSTS runway 14 · 13,328 ft AGL · 337 kt GS
Unstable approach 21:38:00 UTC · KSTS runway 20 · 1,221 ft AGL · 145 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· KSTS