Unstable approach — N170WC

N170WC (WCA Holdings IV) was inbound to KSTS on 2026-08-30. SkyMeter detected a low approach-stability score at Charles M. Schulz Sonoma County Airport (KSTS) on runway 14 at 02:00 UTC. Trace data at the event: 1236 ft AGL, 151 kt GS. Approach stability score: 38/100. 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, 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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• HAZARDS6/5246 2026-08-16 02:15Z – 2026-08-30 04:00Z SFC–13,000 ft

  37NM SE SOUTH LAKE TAHOE, CA, Sunday, August 16, 2026 through Sunday, August 30, 2026 UTC

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• HAZARDS6/5250 2026-08-16 13:00Z – 2026-08-30 04:00Z SFC–11,000 ft

  52NM NE FALLON, NV, Sunday, August 16, 2026 through Sunday, August 30, 2026 UTC

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• HAZARDS6/5252 2026-08-16 13:00Z – 2026-08-30 04:00Z SFC–13,000 ft

  37NM SE SOUTH LAKE TAHOE, CA, Sunday, August 16, 2026 through Sunday, August 30, 2026 UTC

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• HAZARDS6/5423 2026-08-16 19:15Z – 2026-08-30 04:00Z SFC–11,000 ft

  52NM NE FALLON, NV, Sunday, August 16, 2026 through Sunday, August 30, 2026 UTC

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• HAZARDS6/5463 2026-08-17 13:00Z – 2026-08-30 04:00Z SFC–13,000 ft

  20NM NE SALT LAKE CITY, UT, Monday, August 17, 2026 through Sunday, August 30, 2026 UTC

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• HAZARDS6/5937 2026-08-18 13:00Z – 2026-08-31 03:00Z SFC–13,000 ft

  4NM W RICHFIELD, UT, Tuesday, August 18, 2026 through Monday, August 31, 2026 UTC

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• HAZARDS6/5897 2026-08-18 14:00Z – 2026-08-31 02:00Z SFC–7,500 ft

  15NM NW RENO, NV, Tuesday, August 18, 2026 through Monday, August 31, 2026 UTC

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• HAZARDS6/6067 2026-08-18 18:15Z – 2026-09-01 02:00Z SFC–11,000 ft

  52NM NE FALLON, NV, Tuesday, August 18, 2026 through Tuesday, September 1, 2026 UTC

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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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• HAZARDS6/7347 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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• HAZARDS6/7655 2026-08-25 14:00Z – 2026-09-01 04:00Z SFC–11,000 ft

  7NM N WELLS, NV, Tuesday, August 25, 2026 through Tuesday, September 1, 2026 UTC

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• HAZARDS6/7667 2026-08-25 14:00Z – 2026-08-31 04:00Z SFC–11,500 ft

  1NM W RENO, NV, Tuesday, August 25, 2026 through Monday, August 31, 2026 UTC

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• HAZARDS6/7898 2026-08-25 19:45Z – 2026-09-01 04:00Z SFC–13,000 ft

  7NM E WINNEMUCCA, NV, Tuesday, August 25, 2026 through Tuesday, September 1, 2026 UTC

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• HAZARDS6/7943 2026-08-25 20:30Z – 2026-08-31 04:00Z SFC–13,000 ft

  7NM E WINNEMUCCA, NV, Tuesday, August 25, 2026 through Monday, August 31, 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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• HAZARDS6/8105 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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• HAZARDS6/8587 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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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