Unstable approach — FFL938

FFL938 (Efficiency Aloft) was operating from KCYS to KSTS on 2026-07-06. SkyMeter detected a low approach-stability score at Charles M. Schulz Sonoma County Airport (KSTS) on runway 14 at 04:59 UTC. Trace data at the event: 1106 ft AGL, 127 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 6 kt wind, 1 kt crosswind component, 4,023 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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• SECURITY6/4164 2026-06-01 06:00Z – 2026-07-21 05:59Z SFC–400 ft

  Sandy, UT, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• SECURITY6/4167 2026-06-01 06:00Z – 2026-07-21 05:59Z SFC–400 ft

  Salt Lake City, UT, Monday, June 1, 2026 through Monday, July 20, 2026 Local

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• HAZARDS6/9985 2026-06-23 13:54Z – 2026-07-07 15:00Z SFC–11,000 ft

  27NM SW PROVO, UT, Tuesday, June 23, 2026 through Tuesday, July 7, 2026 UTC

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• HAZARDS6/0277 2026-06-24 12:00Z – 2026-07-08 04:00Z SFC–12,000 ft

  2NM S RIFLE, CO, Wednesday, June 24, 2026 through Wednesday, July 8, 2026 UTC

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• HAZARDS6/0276 2026-06-24 15:00Z – 2026-07-07 04:00Z SFC–10,500 ft

  4NM SW SALT LAKE CITY, UT, Wednesday, June 24, 2026 through Tuesday, July 7, 2026 UTC

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• HAZARDS6/1019 2026-06-26 23:25Z – 2026-07-08 04:00Z SFC–11,000 ft

  27NM SW PROVO, UT, Friday, June 26, 2026 through Wednesday, July 8, 2026 UTC

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• HAZARDS6/1072 2026-06-27 14:12Z – 2026-07-10 04:00Z SFC–11,000 ft

  27NM SW PROVO, UT, Saturday, June 27, 2026 through Friday, July 10, 2026 UTC

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• HAZARDS6/1074 2026-06-27 14:41Z – 2026-07-10 04:00Z SFC–11,000 ft

  7NM S SCIPIO, UT, Saturday, June 27, 2026 through Friday, July 10, 2026 UTC

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• HAZARDS6/1144 2026-06-28 14:00Z – 2026-07-11 04:00Z SFC–11,000 ft

  27NM SW PROVO, UT, Sunday, June 28, 2026 through Saturday, July 11, 2026 UTC

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• HAZARDS6/1220 2026-06-28 16:15Z – 2026-07-11 04:00Z SFC–15,500 ft

  3NM E BEAVER, UT, Sunday, June 28, 2026 through Saturday, July 11, 2026 UTC

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• HAZARDS6/1335 2026-06-29 01:32Z – 2026-07-13 04:00Z SFC–12,000 ft

  6NM S SCIPIO, UT, Monday, June 29, 2026 through Monday, July 13, 2026 UTC

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• HAZARDS6/1333 2026-06-29 03:06Z – 2026-07-13 04:00Z SFC–17,000 ft

  8NM SW LEADVILLE, CO, Monday, June 29, 2026 through Monday, July 13, 2026 UTC

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• HAZARDS6/1334 2026-06-29 12:00Z – 2026-07-13 04:00Z SFC–12,000 ft

  25NM W GRAND JUNCTION, CO, Monday, June 29, 2026 through Monday, July 13, 2026 UTC

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• HAZARDS6/1416 2026-06-29 14:37Z – 2026-07-14 04:00Z SFC–13,500 ft

  15NM NW CAÑON CITY, CO, Monday, June 29, 2026 through Tuesday, July 14, 2026 UTC

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• HAZARDS6/2598 2026-07-02 04:42Z – 2026-07-16 04:00Z SFC–12,000 ft

  25NM W GRAND JUNCTION, CO, Thursday, July 2, 2026 through Thursday, July 16, 2026 UTC

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• SECURITY6/7864 2026-07-03 15:07Z – 2026-07-21 05:59Z SFC–400 ft

  Sandy, UT

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• SECURITY6/7862 2026-07-03 16:07Z – 2026-07-21 05:59Z SFC–400 ft

  Salt Lake City, UT

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• HAZARDS6/2845 2026-07-04 00:10Z – 2026-07-17 04:00Z SFC–12,500 ft

  6NM S SCIPIO, UT, Saturday, July 4, 2026 through Friday, July 17, 2026 UTC

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• HAZARDS6/2942 2026-07-05 12:00Z – 2026-07-19 04:00Z SFC–17,000 ft

  2NM W LEADVILLE, CO, Sunday, July 5, 2026 through Sunday, July 19, 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