Unstable approach — N21CG

N21CG (N21cg Leasing) was operating from KRDD to KBOI on 2026-08-30. SkyMeter detected a low approach-stability score at Boise Air Terminal/Gowen Field (KBOI) on runway 28L at 21:34 UTC. Trace data at the event: 3930 ft AGL, 145 kt GS. Approach stability score: 39/100. 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 4 kt wind, 2 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.

• HAZARDS6/6958 2026-08-21 04:00Z – 2026-09-03 04:00Z SFC–11,000 ft

  15NM N KLAMATH FALLS, OR, Friday, August 21, 2026 through Thursday, September 3, 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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• HAZARDS6/7609 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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• HAZARDS6/7708 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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• HAZARDS6/7898 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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• HAZARDS6/7989 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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• HAZARDS6/8464 2026-08-26 21:45Z – 2026-08-31 03:00Z SFC–13,000 ft

  37NM N WINNEMUCCA, NV, Wednesday, August 26, 2026 through Monday, August 31, 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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• HAZARDS6/8492 2026-08-27 01:45Z – 2026-09-04 03:00Z SFC–8,000 ft

  16NM SW BOISE, ID, Thursday, August 27, 2026 through Friday, September 4, 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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• HAZARDS6/8588 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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• AIR SHOWS/SPORTS6/7550 2026-08-29 16:00Z – 2026-08-30 20:30Z SFC–6,500 ft

  Nampa, ID, Saturday, August 29, 2026 through Sunday, August 30, 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