Unstable approach — SIS94

KTRK · 11

2026-08-13 20:39 UTC· KVNY → KTRK· SIERRA PAPA II LLC· C25B

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SIS94 (Sierra Papa II) was operating from KVNY to KTRK on 2026-08-13. SkyMeter detected a low approach-stability score at Truckee Tahoe Airport (KTRK) on runway 11 at 20:39 UTC. Trace data at the event: 6973 ft AGL, 154 kt GS. Approach stability score: 11/100. 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 17 kt wind, 15 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)
  • HAZARDS6/2489 2026-08-06 02:15Z – 2026-08-19 04:00Z SFC–9,000 ft

    27NM S BAKERSFIELD, CA, Thursday, August 6, 2026 through Wednesday, August 19, 2026 UTC

    View FAA NOTAM →
  • HAZARDS6/2916 2026-08-08 01:45Z – 2026-08-15 05:00Z SFC–6,000 ft

    25NM S BAKERSFIELD, CA, Saturday, August 8, 2026 through Saturday, August 15, 2026 UTC

    View FAA NOTAM →
  • HAZARDS6/4110 2026-08-12 14:00Z – 2026-08-26 03:00Z SFC–12,500 ft

    12NM SE DRESSLERVILLE, NV, Wednesday, August 12, 2026 through Wednesday, August 26, 2026 UTC

    View FAA NOTAM →
  • HAZARDS6/4729 2026-08-13 02:35Z – 2026-08-21 03:00Z SFC–10,500 ft

    10NM W LAKE TAHOE, CA, Thursday, August 13, 2026 through Friday, August 21, 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 11
  • 6973 ft AGL at event
  • 154 kt ground speed
  • 0 fpm vertical
  • Approach stability 11/100
  • 17 kt wind
  • 15 kt crosswind component
  • 16,093 m visibility
  • KTRK 161850Z 21010G20KT 10SM SCT100 19/M03 A3009 RMK FU ALF DSNT NE

Flight context

  • SIS94
  • Sierra Papa II
  • C25B
  • KVNY → KTRK
  • 2026-08-13 20:39 UTC
  • KTRK runway 11

All events on this flight

Unstable approach 20:39:56 UTC · KTRK runway 11 · 6,973 ft AGL · 154 kt GS
Unstable approach 20:39:56 UTC · KTRK runway 11 · 6,973 ft AGL · 154 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· KTRK