Unstable approach — N551GM

N551GM (Gary McGrath) was operating from KDPA to KSTS on 2026-09-01. SkyMeter detected a low approach-stability score at Charles M. Schulz Sonoma County Airport (KSTS) on runway 14 at 21:58 UTC. Trace data at the event: 1228 ft AGL, 123 kt GS. METAR at the time reported 12 kt wind, 12 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.

• 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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• 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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• HAZARDS6/7121 2026-08-23 03:30Z – 2026-09-05 04:00Z SFC–10,000 ft

  60NM SW MOUNTAIN HOME, ID, Sunday, August 23, 2026 through Saturday, September 5, 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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• HAZARDS6/7347 2026-08-24 13:00Z – 2026-09-07 04:00Z SFC–10,000 ft

  35NM SW PROVO, UT, Monday, August 24, 2026 through Monday, September 7, 2026 UTC

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• HAZARDS6/7530 2026-08-24 17:00Z – 2026-09-06 03:00Z SFC–10,000 ft

  35NM SW PROVO, UT, Monday, August 24, 2026 through Sunday, September 6, 2026 UTC

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• HAZARDS6/7609 2026-08-24 23:37Z – 2026-09-07 03:00Z SFC–8,000 ft

  15NM NE ALTURAS, CA, Monday, August 24, 2026 through Monday, September 7, 2026 UTC

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• HAZARDS6/7654 2026-08-25 13:00Z – 2026-09-07 04:00Z SFC–10,000 ft

  35NM SW PROVO, UT, Tuesday, August 25, 2026 through Monday, September 7, 2026 UTC

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• HAZARDS6/7708 2026-08-25 13:13Z – 2026-09-08 03:00Z SFC–8,000 ft

  15NM NE ALTURAS, CA, Tuesday, August 25, 2026 through Tuesday, September 8, 2026 UTC

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• HAZARDS6/7986 2026-08-25 21:45Z – 2026-09-07 04:00Z SFC–12,000 ft

  32NM SW TOOELE, UT, Tuesday, August 25, 2026 through Monday, September 7, 2026 UTC

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• HAZARDS6/7989 2026-08-25 22:30Z – 2026-09-08 03:00Z SFC–11,000 ft

  14NM NE CEDARVILLE, CA, Tuesday, August 25, 2026 through Tuesday, September 8, 2026 UTC

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• HAZARDS6/8111 2026-08-26 02:30Z – 2026-09-09 04:00Z SFC–10,000 ft

  60NM SW MOUNTAIN HOME, ID, Wednesday, August 26, 2026 through Wednesday, September 9, 2026 UTC

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• HAZARDS6/8105 2026-08-26 03:30Z – 2026-09-08 03:00Z SFC–11,000 ft

  14NM E CEDARVILLE, CA, Wednesday, August 26, 2026 through Tuesday, September 8, 2026 UTC

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• HAZARDS6/8238 2026-08-26 15:00Z – 2026-09-02 03:00Z SFC–13,000 ft

  7NM E WINNEMUCCA, NV, Wednesday, August 26, 2026 through Wednesday, September 2, 2026 UTC

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• HAZARDS6/8332 2026-08-26 17:45Z – 2026-09-05 04:00Z SFC–11,000 ft

  51NM NE FALLON, NV, Wednesday, August 26, 2026 through Saturday, September 5, 2026 UTC

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• HAZARDS6/8467 2026-08-26 23:45Z – 2026-09-02 03:00Z SFC–10,500 ft

  62NM NE WINNEMUCCA, NV, Wednesday, August 26, 2026 through Wednesday, September 2, 2026 UTC

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• HAZARDS6/8474 2026-08-27 00:30Z – 2026-09-04 03:00Z SFC–13,000 ft

  37NM N WINNEMUCCA, NV, Thursday, August 27, 2026 through Friday, September 4, 2026 UTC

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• HAZARDS6/8507 2026-08-27 03:15Z – 2026-09-05 03:00Z SFC–11,000 ft

  51NM NE FALLON, NV, Thursday, August 27, 2026 through Saturday, September 5, 2026 UTC

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• HAZARDS6/8501 2026-08-27 14:00Z – 2026-09-04 06:00Z SFC–11,000 ft

  104NM SE BURNS, OR, Thursday, August 27, 2026 through Friday, September 4, 2026 UTC

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• HAZARDS6/8587 2026-08-27 17:45Z – 2026-09-09 03:00Z SFC–8,500 ft

  25NM NW OGDEN, UT, Thursday, August 27, 2026 through Wednesday, September 9, 2026 UTC

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• HAZARDS6/8588 2026-08-27 18:00Z – 2026-09-09 03:00Z SFC–10,500 ft

  62NM NE WINNEMUCCA, NV, Thursday, August 27, 2026 through Wednesday, September 9, 2026 UTC

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• HAZARDS6/8676 2026-08-27 23:15Z – 2026-09-10 03:00Z SFC–13,000 ft

  37NM N WINNEMUCCA, NV, Thursday, August 27, 2026 through Thursday, September 10, 2026 UTC

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• HAZARDS6/8775 2026-08-28 14:00Z – 2026-09-09 03:00Z SFC–8,500 ft

  25NM NW OGDEN, UT, Friday, August 28, 2026 through Wednesday, September 9, 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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• HAZARDS6/8869 2026-08-28 21:32Z – 2026-09-12 03:00Z SFC–10,000 ft

  18NM SW LOVELAND, CO, Friday, August 28, 2026 through Saturday, September 12, 2026 UTC

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• HAZARDS6/9396 2026-08-31 18:00Z – 2026-09-04 01:30Z SFC–14,000 ft

  Bailey, CO, Monday, August 31, 2026 through Friday, September 4, 2026 UTC

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• HAZARDS6/9645 2026-08-31 18:00Z – 2026-09-04 01:30Z SFC–14,000 ft

  BAILEY, CO, Monday, August 31, 2026 through Friday, September 4, 2026 UTC

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• HAZARDS6/9646 2026-08-31 18:00Z – 2026-09-04 01:30Z SFC–14,000 ft

  BAILEY, CO, Monday, August 31, 2026 through Friday, September 4, 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