Squawk 7600 transmission — ACA337

ACA337 (AIR Canada) was operating from CYUL to CYEG on 2026-08-01. SkyMeter recorded a 7600 transponder transmission at 02:26 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: 29365 ft AGL, 441 kt GS. METAR at the time reported 3 kt wind, 1 kt crosswind component. Detection algorithm and known limitations: see SkyMeter methodology.

• SECURITY6/4348 2026-03-08 07:00Z – 2026-11-01 06:59Z SFC–2,400 ft

  GRAND FORKS AFB, ND, Sunday, March 8, 2026 through Sunday, November 1, 2026 Local

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• HAZARDS6/6777 2026-07-19 19:05Z – 2026-08-20 07:00Z SFC–7,000 ft

  10NM N ELY, MN, Sunday, July 19, 2026 through Thursday, August 20, 2026 UTC

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• HAZARDS6/6779 2026-07-19 19:09Z – 2026-08-20 07:00Z SFC–7,000 ft

  20NM N ELY, MN, Sunday, July 19, 2026 through Thursday, August 20, 2026 UTC

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• HAZARDS6/6899 2026-07-20 14:30Z – 2026-08-02 06:00Z SFC–7,000 ft

  14NM N ORR, MN, Monday, July 20, 2026 through Sunday, August 2, 2026 UTC

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• HAZARDS6/7199 2026-07-21 14:00Z – 2026-08-03 02:00Z SFC–7,000 ft

  20NM N ELY, MN, Tuesday, July 21, 2026 through Monday, August 3, 2026 UTC

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• HAZARDS6/8575 2026-07-26 15:00Z – 2026-08-09 03:00Z SFC–12,000 ft

  18NM NW HARLOWTON, MT, Sunday, July 26, 2026 through Sunday, August 9, 2026 UTC

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• HAZARDS6/8871 2026-07-27 14:00Z – 2026-08-09 04:00Z SFC–8,000 ft

  83NM N SPEARFISH, SD, Monday, July 27, 2026 through Sunday, August 9, 2026 UTC

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• HAZARDS6/8883 2026-07-27 14:00Z – 2026-08-09 04:00Z SFC–11,000 ft

  23NM SE HAMILTON, MT, Monday, July 27, 2026 through Sunday, August 9, 2026 UTC

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• HAZARDS6/9880 2026-07-29 14:00Z – 2026-08-12 03:00Z SFC–9,000 ft

  26NM E MILES CITY, MT, Wednesday, July 29, 2026 through Wednesday, August 12, 2026 UTC

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• HAZARDS6/0287 2026-07-30 13:00Z – 2026-08-01 05:00Z SFC–2,500 ft

  21NM NW ELY, MN, Thursday, July 30, 2026 through Saturday, August 1, 2026 UTC

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• HAZARDS6/0307 2026-07-30 14:00Z – 2026-08-13 04:00Z SFC–12,000 ft

  20NM SE HELENA, MT, Thursday, July 30, 2026 through Thursday, August 13, 2026 UTC

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• AIR SHOWS/SPORTS6/8432 2026-07-31 16:30Z – 2026-08-02 20:30Z SFC–16,000 ft

  St Cloud, MN, Friday, July 31, 2026 through Sunday, August 2, 2026 UTC

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• HAZARDS6/0709 2026-07-31 22:58Z – 2026-08-02 04:00Z SFC–12,000 ft

  56NM E HELENA, MT, Friday, July 31, 2026 through Sunday, August 2, 2026 UTC

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• HAZARDS6/0711 2026-08-01 01:16Z – 2026-08-02 04:00Z SFC–8,000 ft

  23NM S BILLINGS, MT, Saturday, August 1, 2026 through Sunday, August 2, 2026 UTC

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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