Unstable approach — CNS117

K4B8 · 02

2026-08-20 17:11 UTC· KF45 K4B8· RIGI INC· PC24

CNS117 (Rigi) was operating from KF45 to K4B8 on 2026-08-20. SkyMeter detected a low approach-stability score at Robertson Field (K4B8) on runway 02 at 17:11 UTC. Trace data at the event: 1340 ft AGL, 112 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 4 kt wind, 1 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.

Active FAA TFR during this flight

Source: FAA TFR archive (hourly snapshot)
  • SECURITY5/2811 2025-10-20 12:00Z – 2026-10-20 12:00Z SFC–1,000 ft

    NEW YORK, NY, Monday, October 20, 2025 through Tuesday, October 20, 2026 Local

    View FAA NOTAM →
  • SECURITY6/5452 2026-08-17 12:30Z – 2026-08-22 06:00Z SFC–2,500 ft

    MAYPORT, FL, Monday, August 17, 2026 through Saturday, August 22, 2026 Local

    View FAA NOTAM →
  • SECURITY6/5076 2026-08-19 15:00Z – 2026-08-30 22:00Z SFC–1,000 ft

    Williamsport, PA, Wednesday, August 19, 2026 through Sunday, August 30, 2026 Local

    View FAA NOTAM →
  • SPACE OPERATIONS6/5393 2026-08-20 15:19Z – 2026-08-20 20:01Z SFC–180 ft

    Cape Canaveral, FL, Thursday, August 20, 2026 Local

    View FAA NOTAM →
  • SPACE OPERATIONS6/5395 2026-08-20 15:19Z – 2026-08-20 20:01Z SFC–180 ft

    Cape Canaveral, FL, Thursday, August 20, 2026 Local

    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 02
  • 1340 ft AGL at event
  • 112 kt ground speed
  • 0 fpm vertical
  • Approach stability 40/100
  • 4 kt wind
  • 1 kt crosswind component
  • 14,484 m visibility
  • METAR K4B8 062335Z AUTO 00000KT 9SM CLR 18/16 A2999 RMK AO2 T01760163 $

Flight context

  • CNS117
  • Rigi
  • PC24
  • KF45 → K4B8
  • 2026-08-20 17:11 UTC
  • K4B8 runway 02

All events on this flight

Unstable approach 17:11:29 UTC · K4B8 runway 02 · 1,340 ft AGL · 112 kt GS
Unstable approach 17:11:29 UTC · K4B8 runway 02 · 1,340 ft AGL · 112 kt GS

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· K4B8