Unstable approach — DAL2479

KPWM · 29

2026-08-20 16:45 UTC· KATL → KPWM· DELTA AIR LINES INC· A321

▶ Replay 📊 Analyse

DAL2479 (Delta AIR Lines) was operating from KATL to KPWM on 2026-08-20. SkyMeter detected a low approach-stability score at Portland International Jetport (KPWM) on runway 29 at 16:45 UTC. Trace data at the event: 1170 ft AGL, 209 kt GS. Approach stability score: 41/100. 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 7 kt wind, 1 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)
  • SECURITY5/2811 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 →
  • SECURITY6/5076 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 →

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 29
  • 1170 ft AGL at event
  • 209 kt ground speed
  • 0 fpm vertical
  • Approach stability 41/100
  • 7 kt wind
  • 1 kt crosswind component
  • 16,093 m visibility
  • KPWM 162051Z 19007KT 10SM CLR 21/14 A3025 RMK AO2 SLP244 T02060144 56006 $

Flight context

  • DAL2479
  • Delta AIR Lines
  • A321
  • KATL → KPWM
  • 2026-08-20 16:45 UTC
  • KPWM runway 29

All events on this flight

Unstable approach 16:45:56 UTC · KPWM runway 29 · 1,170 ft AGL · 209 kt GS
Unstable approach 16:45:56 UTC · KPWM runway 29 · 1,170 ft AGL · 209 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· KPWM