Unstable approach — TKR136

KS39 · 33

2026-08-08 23:11 UTC· KRDM → KS39· CSC DELAWARE TUST CO TRUSTEE· C130

▶ Replay 📊 Analyse

TKR136 (CSC Delaware Tust) was operating from KRDM to KS39 on 2026-08-08. SkyMeter detected a low approach-stability score at Prineville Airport (KS39) on runway 33 at 23:11 UTC. Trace data at the event: 4322 ft AGL, 133 kt GS. Approach stability score: 31/100. 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 16 kt wind, 10 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)
  • HAZARDS6/9852 2026-07-29 00:30Z – 2026-08-12 04:00Z SFC–9,000 ft

    17NM NW REDMOND, OR, Wednesday, July 29, 2026 through Wednesday, August 12, 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 33
  • 4322 ft AGL at event
  • 133 kt ground speed
  • 0 fpm vertical
  • Approach stability 31/100
  • 16 kt wind
  • 10 kt crosswind component
  • 16,093 m visibility
  • METAR KS39 160335Z AUTO 36009KT 10SM BKN065 OVC075 15/03 A3000 RMK AO2

Flight context

  • TKR136
  • CSC Delaware Tust
  • C130
  • KRDM → KS39
  • 2026-08-08 23:11 UTC
  • KS39 runway 33

All events on this flight

Unstable approach 23:11:24 UTC · KS39 runway 33 · 4,322 ft AGL · 133 kt GS
Unstable approach 23:11:24 UTC · KS39 runway 33 · 4,322 ft AGL · 133 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· KS39