Unstable approach — DAL820

KDCA · 19

2026-07-31 20:56 UTC· KSLC → KDCA· A21N

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DAL820 was operating from KSLC to KDCA on 2026-07-31. SkyMeter detected a low approach-stability score at Ronald Reagan Washington National Airport (KDCA) on runway 19 at 20:56 UTC. Trace data at the event: 1141 ft AGL, 152 kt GS. Approach stability score: 44/100. 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 4 kt wind, 4 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)
  • HAZARDS6/6894 2026-07-20 14:02Z – 2026-08-03 04:00Z SFC–12,500 ft

    12NM NW CRAIG, CO, Monday, July 20, 2026 through Monday, August 3, 2026 UTC

    View FAA NOTAM →
  • HAZARDS6/6900 2026-07-20 14:42Z – 2026-08-03 04:00Z SFC–13,500 ft

    11NM SW KREMMLING, CO, Monday, July 20, 2026 through Monday, August 3, 2026 UTC

    View FAA NOTAM →
  • HAZARDS6/7220 2026-07-21 04:00Z – 2026-08-04 04:00Z SFC–12,000 ft

    19NM SW MEEKER, CO, Tuesday, July 21, 2026 through Tuesday, August 4, 2026 UTC

    View FAA NOTAM →
  • HAZARDS6/7221 2026-07-21 04:00Z – 2026-08-04 04:00Z SFC–13,500 ft

    7NM SE STEAMBOAT SPRINGS, CO, Tuesday, July 21, 2026 through Tuesday, August 4, 2026 UTC

    View FAA NOTAM →
  • HAZARDS6/7604 2026-07-22 03:00Z – 2026-08-05 04:00Z SFC–17,000 ft

    3NM W LEADVILLE, CO, Wednesday, July 22, 2026 through Wednesday, August 5, 2026 UTC

    View FAA NOTAM →
  • HAZARDS6/7702 2026-07-22 13:08Z – 2026-08-05 04:00Z SFC–11,500 ft

    11NM SW CRAIG, CO, Wednesday, July 22, 2026 through Wednesday, August 5, 2026 UTC

    View FAA NOTAM →
  • HAZARDS6/7655 2026-07-22 13:10Z – 2026-08-04 04:00Z SFC–13,000 ft

    17NM NW MEEKER, CO, Wednesday, July 22, 2026 through Tuesday, August 4, 2026 UTC

    View FAA NOTAM →
  • HAZARDS6/9861 2026-07-29 00:45Z – 2026-08-01 04:00Z SFC–12,500 ft

    19NM NW GRAND JUNCTION, CO, Wednesday, July 29, 2026 through Saturday, August 1, 2026 UTC

    View FAA NOTAM →
  • HAZARDS6/9884 2026-07-29 12:00Z – 2026-08-12 04:00Z SFC–12,500 ft

    19NM NW GRAND JUNCTION, CO, Wednesday, July 29, 2026 through Wednesday, August 12, 2026 UTC

    View FAA NOTAM →
  • VIP6/0143 2026-07-31 13:30Z – 2026-07-31 19:45Z SFC–4,999 ft

    THURMONT, MD, Friday, July 31, 2026 Local

    View FAA NOTAM →
  • VIP6/9918 2026-07-31 14:00Z – 2026-07-31 19:30Z SFC–17,999 ft

    THURMONT, MD, Friday, July 31, 2026 Local

    View FAA NOTAM →
  • VIP6/9920 2026-07-31 14:00Z – 2026-07-31 19:30Z SFC–17,999 ft

    THURMONT, MD, Friday, July 31, 2026 Local

    View FAA NOTAM →
  • VIP6/9921 2026-07-31 14:00Z – 2026-07-31 19:30Z SFC–17,999 ft

    THURMONT, MD, Friday, July 31, 2026 Local

    View FAA NOTAM →
  • VIP6/0568 2026-07-31 19:00Z – 2026-08-03 22:30Z SFC–4,999 ft

    Middleburg, VA, Friday, July 31, 2026 through Monday, August 3, 2026 Local

    View FAA NOTAM →
  • VIP6/0675 2026-07-31 20:07Z – 2026-07-31 22:00Z SFC–17,999 ft

    THURMONT, MD

    View FAA NOTAM →
  • VIP6/0678 2026-07-31 20:07Z – 2026-07-31 21:00Z SFC–4,999 ft

    THURMONT, MD

    View FAA NOTAM →
  • VIP6/0685 2026-07-31 20:07Z – 2026-07-31 22:00Z SFC–17,999 ft

    THURMONT, MD

    View FAA NOTAM →
  • VIP6/0686 2026-07-31 20:07Z – 2026-07-31 22:00Z SFC–17,999 ft

    THURMONT, MD

    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 19
  • 1141 ft AGL at event
  • 152 kt ground speed
  • 0 fpm vertical
  • Approach stability 44/100
  • 4 kt wind
  • 4 kt crosswind component
  • 16,093 m visibility
  • KDCA 151552Z 03003KT 10SM FEW040 FEW250 29/20 A3016 RMK AO2 SLP214 T02940200 $

Flight context

  • DAL820
  • A21N
  • KSLC → KDCA
  • 2026-07-31 20:56 UTC
  • KDCA runway 19

All events on this flight

Unstable approach 20:56:21 UTC · KDCA runway 19 · 1,141 ft AGL · 152 kt GS
Unstable approach 20:56:21 UTC · KDCA runway 19 · 1,141 ft AGL · 152 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· KDCA