Squawk 7600 transmission — SWA4444

2026-06-07 21:48 UTC· KTPA → KBNA· SOUTHWEST AIRLINES CO· B737

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SWA4444 (Southwest Airlines) was operating from KTPA to KBNA on 2026-06-07. SkyMeter recorded a 7600 transponder transmission at 21:48 UTC. Code 7600 indicates a lost-comms / NORDO state; brief transmissions are often transient radio or transponder issues that resolve without crew action. Trace data at the event: 27320 ft AGL, 458 kt GS. Approach stability score: 92/100. Scores in this band are observed on roughly 50% of approaches at this runway and represent the centerline of normal operations. METAR at the time reported 5 kt wind. Detection algorithm and known limitations: see SkyMeter methodology.

Active FAA TFR during this flight

Source: FAA TFR archive (hourly snapshot)
  • HAZARDS6/3292 2026-05-27 17:20Z – 2026-06-10 00:15Z SFC–2,000 ft

    22NM SW TALLAHASSEE, FL, Wednesday, May 27, 2026 through Wednesday, June 10, 2026 UTC

    View FAA NOTAM →
  • SECURITY6/3979 2026-06-01 04:00Z – 2026-07-21 03:59Z SFC–400 ft

    ATLANTA, GA, Monday, June 1, 2026 through Tuesday, July 21, 2026 UTC

    View FAA NOTAM →
  • SECURITY6/3980 2026-06-01 04:00Z – 2026-07-21 03:59Z SFC–400 ft

    CHATTANOOGA, TN, Monday, June 1, 2026 through Monday, July 20, 2026 Local

    View FAA NOTAM →
  • SECURITY6/3990 2026-06-01 04:00Z – 2026-07-21 03:59Z SFC–400 ft

    CHATTANOOGA, TN, Monday, June 1, 2026 through Monday, July 20, 2026 Local

    View FAA NOTAM →
  • SECURITY6/3991 2026-06-01 04:00Z – 2026-07-21 03:59Z SFC–400 ft

    MARIETTA, GA, Monday, June 1, 2026 through Monday, July 20, 2026 Local

    View FAA NOTAM →
  • SECURITY6/4153 2026-06-01 04:00Z – 2026-07-21 03:59Z SFC–400 ft

    Tampa, FL, Monday, June 1, 2026 through Monday, July 20, 2026 Local

    View FAA NOTAM →
  • SECURITY6/4156 2026-06-01 04:00Z – 2026-07-21 03:59Z SFC–400 ft

    TAMPA, FL, Monday, June 1, 2026 through Monday, July 20, 2026 Local

    View FAA NOTAM →
  • SECURITY6/4121 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

    Nashville, TN, Monday, June 1, 2026 through Monday, July 20, 2026 Local

    View FAA NOTAM →
  • HAZARDS6/5656 2026-06-04 16:19Z – 2026-06-18 00:15Z SFC–2,000 ft

    22NM SW TALLAHASSEE, FL, Thursday, June 4, 2026 through Thursday, June 18, 2026 UTC

    View FAA NOTAM →
  • HAZARDS6/5771 2026-06-04 21:47Z – 2026-06-18 00:15Z SFC–3,500 ft

    22NM SW TALLAHASSEE, FL, Thursday, June 4, 2026 through Thursday, June 18, 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

  • 27320 ft AGL at event
  • 458 kt ground speed
  • 0 fpm vertical
  • Approach stability 92/100
  • 5 kt wind
  • 0 kt crosswind component

Flight context

  • SWA4444
  • Southwest Airlines
  • B737
  • KTPA → KBNA
  • 2026-06-07 21:48 UTC

All events on this flight

Squawk 7600 transmission 21:48:33 UTC · · 27,320 ft AGL · 458 kt GS
Squawk 7600 transmission 21:48:33 UTC · · 27,320 ft AGL · 458 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