Squawk 7600 transmission — TLK811

TLK811 (Aviation Starlink) was operating from CYUL to KBOS on 2026-06-01. SkyMeter recorded a 7600 transponder transmission at 14:15 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: 6970 ft AGL, 239 kt GS. Approach stability score: 88/100. 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 4 kt wind. Detection algorithm and known limitations: see SkyMeter methodology.

• SECURITY6/3959 2026-06-01 04:00Z – 2026-07-21 03:59Z SFC–400 ft

  Boston, MA, Monday, June 1, 2026 through Monday, July 20, 2026 Local

  View FAA NOTAM →
• SECURITY6/3969 2026-06-01 04:00Z – 2026-07-21 03:59Z SFC–400 ft

  Waltham, MA, Monday, June 1, 2026 through Monday, July 20, 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.

All events on this flight

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