Unstable approach — N77TG

KSAT · 13R

2026-08-24 21:02 UTC· KOPF → KSAT· BARRON 421 LLC· B350

▶ Replay 📊 Analyse

N77TG (Barron 421) was operating from KOPF to KSAT on 2026-08-24. SkyMeter detected a low approach-stability score at San Antonio International Airport (KSAT) on runway 13R at 21:02 UTC. Trace data at the event: 1879 ft AGL, 161 kt GS. Approach stability score: 37/100. 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 8 kt wind, 3 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)
  • SECURITY5/6914 2025-05-06 23:30Z – 2027-10-18 11:03Z SFC–6,000 ft

    South Padre Island, TX, Tuesday, May 6, 2025 Local

    View FAA NOTAM →
  • SECURITY5/3678 2026-01-01 05:00Z – 2027-01-01 05:59Z SFC–2,000 ft

    Brownsville, TX, Thursday, January 1, 2026 through Friday, January 1, 2027 Local

    View FAA NOTAM →
  • SECURITY5/3679 2026-01-01 05:00Z – 2027-01-01 05:59Z SFC–5,000 ft

    Brownsville, TX, Thursday, January 1, 2026 through Friday, January 1, 2027 Local

    View FAA NOTAM →
  • HAZARDS6/6701 2026-08-21 05:00Z – 2026-08-26 05:00Z SFC–5,000 ft

    BROWNSVILLE, TX, Friday, August 21, 2026 through Wednesday, August 26, 2026 UTC

    View FAA NOTAM →
  • HAZARDS6/7111 2026-08-24 05:00Z – 2026-09-05 05:00Z SFC–10,000 ft

    BROWNSVILLE, TX, Monday, August 24, 2026 through Saturday, September 5, 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 13R
  • 1879 ft AGL at event
  • 161 kt ground speed
  • 0 fpm vertical
  • Approach stability 37/100
  • 8 kt wind
  • 3 kt crosswind component
  • 16,093 m visibility
  • KSAT 161151Z COR 16009KT 10SM BKN015 BKN250 26/23 A3014 RMK AO2 SLP186 T02560233 10267 20256 53008 $

Flight context

  • N77TG
  • Barron 421
  • B350
  • KOPF → KSAT
  • 2026-08-24 21:02 UTC
  • KSAT runway 13R

All events on this flight

Unstable approach 21:02:16 UTC · KSAT runway 13R · 1,879 ft AGL · 161 kt GS
Unstable approach 21:02:18 UTC · KSAT runway 13R · 1,894 ft AGL · 160 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· KSAT