Unstable approach — TKR137

KMCC · 16

2026-08-10 00:48 UTC· K4SD → KMCC· CSC DELAWARE TRUST CO TRUSTEE· B733

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TKR137 (CSC Delaware Trust) was operating from K4SD to KMCC on 2026-08-10. SkyMeter detected a low approach-stability score at Mc Clellan Airfield (KMCC) on runway 16 at 00:48 UTC. Trace data at the event: 1184 ft AGL, 141 kt GS. Approach stability score: 40/100. 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 10 kt wind, 5 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.

Active FAA TFR during this flight

Source: FAA TFR archive (hourly snapshot)
  • 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

    View FAA NOTAM →
  • HAZARDS6/9397 2026-07-28 01:03Z – 2026-08-11 04:00Z SFC–5,000 ft

    9NM NW GRASS VALLEY, CA, Tuesday, July 28, 2026 through Tuesday, August 11, 2026 UTC

    View FAA NOTAM →
  • HAZARDS6/3039 2026-08-08 17:30Z – 2026-08-22 04:00Z SFC–11,500 ft

    6NM SW RENO, NV, Saturday, August 8, 2026 through Saturday, August 22, 2026 UTC

    View FAA NOTAM →
  • HAZARDS6/3100 2026-08-09 02:44Z – 2026-08-22 04:00Z SFC–6,000 ft

    7NM E GRASS VALLEY, CA, Sunday, August 9, 2026 through Saturday, August 22, 2026 UTC

    View FAA NOTAM →
  • HAZARDS6/3128 2026-08-09 14:45Z – 2026-08-23 04:00Z SFC–11,000 ft

    15NM NW RENO, NV, Sunday, August 9, 2026 through Sunday, August 23, 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 16
  • 1184 ft AGL at event
  • 141 kt ground speed
  • 0 fpm vertical
  • Approach stability 40/100
  • 10 kt wind
  • 5 kt crosswind component
  • 16,093 m visibility
  • KMCC 152255Z AUTO VRB05G10KT 10SM CLR 30/12 A3003 RMK AO2

Flight context

  • TKR137
  • CSC Delaware Trust
  • B733
  • K4SD → KMCC
  • 2026-08-10 00:48 UTC
  • KMCC runway 16

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· KMCC