Unstable approach — CUL558

KRAP · 32

2026-06-13 21:42 UTC· KBIL → KRAP· CSC DELAWARE TRUST CO TRUSTEE· C550

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CUL558 (CSC Delaware Trust) was operating from KBIL to KRAP on 2026-06-13. SkyMeter detected a low approach-stability score at Rapid City Regional Airport (KRAP) on runway 32 at 21:42 UTC. Trace data at the event: 4261 ft AGL, 169 kt GS. METAR at the time reported 13 kt wind, 1 kt crosswind component, 4,023 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)
  • HAZARDS6/7480 2026-06-11 12:00Z – 2026-06-23 03:00Z SFC–9,500 ft

    24NM SW CHADRON, NE, Thursday, June 11, 2026 through Tuesday, June 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 32
  • 4261 ft AGL at event
  • 169 kt ground speed
  • 0 fpm vertical
  • 13 kt wind
  • 1 kt crosswind component
  • 4,023 m visibility
  • KRAP 120548Z AUTO 30003KT 2 1/2SM VCTS -RA BR OVC002 10/10 A2981 RMK AO2 LTG DSNT W AND NW RAE00B33 PRESRR P0000 $

Flight context

  • CUL558
  • CSC Delaware Trust
  • C550
  • KBIL → KRAP
  • 2026-06-13 21:42 UTC
  • KRAP runway 32

All events on this flight

Unstable approach 21:42:59 UTC · KRAP runway 32 · 4,261 ft AGL · 169 kt GS
Unstable approach 21:42:59 UTC · KRAP runway 32 · 4,261 ft AGL · 169 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· KRAP