Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

C0841D

ICAO 24-bit transponder address · allocated to Canada

Currently assigned to C-GYAU · CESSNA 172 Skyhawk · operated by Vector Air Limited

Hex
C0841D
Octal
60102035
Decimal
12,616,733
Country
CA
Tail
C-GYAU
Type
C172
No current signal · last broadcast Jul 26, 16:00 UTC
Flights observed
88
Distinct callsigns
1
Country
CA
Last broadcast
Jul 26, 16:00 UTC

Last known position

Most recent position reported by Mode-S C0841D.

Country allocation

The ICAO 24-bit address C0841D falls within the block assigned to Canada (CA) by ICAO Annex 10, Volume III. Every aircraft registered in Canada receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 1 distinct

Callsign Airline Flights Last seen
CGYAU - 88 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CGYAU - Jul 26, 15:25 UTCJul 26, 16:00 UTC35m
2026-07-26 CGYAU - Jul 26, 12:20 UTCJul 26, 13:05 UTC45m
2026-07-24 CGYAU - Jul 24, 12:05 UTCJul 24, 12:25 UTC20m
2026-07-24 CGYAU - Jul 24, 01:30 UTCJul 24, 03:30 UTC2h 0m
2026-07-23 CGYAU - Jul 23, 23:35 UTCJul 24, 00:15 UTC40m
2026-07-23 CGYAU - Jul 23, 19:25 UTCJul 23, 20:20 UTC55m
2026-07-23 CGYAU - Jul 23, 17:40 UTCJul 23, 18:05 UTC25m
2026-07-22 CGYAU - Jul 22, 23:20 UTCJul 22, 23:35 UTC15m
2026-07-22 CGYAU - Jul 22, 22:20 UTCJul 22, 22:45 UTC25m
2026-07-20 CGYAU - Jul 20, 20:25 UTCJul 20, 20:45 UTC20m
2026-07-20 CGYAU - Jul 20, 18:20 UTCJul 20, 19:15 UTC55m
2026-07-20 CGYAU - Jul 20, 16:00 UTCJul 20, 17:00 UTC1h 0m
2026-07-19 CGYAU - Jul 19, 23:55 UTCJul 20, 01:00 UTC1h 5m
2026-07-17 CGYAU - Jul 17, 23:14 UTCJul 17, 23:39 UTC25m
2026-07-14 CGYAU - Jul 14, 01:50 UTCJul 14, 03:40 UTC1h 50m
2026-07-13 CGYAU - Jul 13, 16:00 UTCJul 13, 16:50 UTC50m
2026-07-13 CGYAU - Jul 13, 01:55 UTCJul 13, 02:25 UTC30m
2026-07-13 CGYAU - Jul 13, 01:10 UTCJul 13, 01:45 UTC35m
2026-07-12 CGYAU - Jul 12, 20:55 UTCJul 12, 22:45 UTC1h 50m
2026-07-12 CGYAU - Jul 12, 18:40 UTCJul 12, 19:20 UTC40m
2026-07-12 CGYAU - Jul 12, 04:05 UTCJul 12, 05:15 UTC1h 10m
2026-07-12 CGYAU - Jul 12, 01:45 UTCJul 12, 02:50 UTC1h 5m
2026-07-11 CGYAU - Jul 11, 01:15 UTCJul 11, 04:05 UTC2h 50m
2026-07-09 CGYAU - Jul 9, 15:20 UTCJul 9, 16:50 UTC1h 30m
2026-07-07 CGYAU - Jul 7, 23:50 UTCJul 8, 00:20 UTC30m
2026-07-07 CGYAU - Jul 7, 21:05 UTCJul 7, 22:15 UTC1h 10m
2026-07-05 CGYAU - Jul 5, 14:50 UTCJul 5, 15:25 UTC35m
2026-07-05 CGYAU - Jul 5, 13:00 UTCJul 5, 13:35 UTC35m
2026-07-04 CGYAU - Jul 4, 18:05 UTCJul 4, 19:00 UTC55m
2026-07-03 CGYAU - Jul 3, 13:55 UTCJul 3, 15:25 UTC1h 30m
2026-07-03 CGYAU - Jul 3, 01:25 UTCJul 3, 01:35 UTC10m
2026-06-29 CGYAU - Jun 29, 21:30 UTCJun 29, 22:15 UTC45m
2026-06-29 CGYAU - Jun 29, 13:24 UTCJun 29, 13:39 UTC15m
2026-06-29 CGYAU - Jun 29, 11:14 UTCJun 29, 11:39 UTC25m
2026-06-27 CGYAU - Jun 27, 23:50 UTCJun 28, 00:55 UTC1h 5m
2026-06-27 CGYAU - Jun 27, 22:49 UTCJun 27, 23:04 UTC15m
2026-06-27 CGYAU - Jun 27, 19:34 UTCJun 27, 19:55 UTC20m
2026-06-25 CGYAU - Jun 25, 13:09 UTCJun 25, 14:09 UTC1h 0m
2026-06-24 CGYAU - Jun 24, 23:40 UTCJun 25, 00:40 UTC1h 0m
2026-06-24 CGYAU - Jun 24, 16:50 UTCJun 24, 17:14 UTC25m
2026-06-23 CGYAU - Jun 23, 15:19 UTCJun 23, 15:59 UTC40m
2026-06-22 CGYAU - Jun 22, 13:35 UTCJun 22, 14:24 UTC50m
2026-06-21 CGYAU - Jun 21, 15:09 UTCJun 21, 15:54 UTC45m
2026-06-19 CGYAU - Jun 19, 23:39 UTCJun 20, 02:04 UTC2h 25m
2026-06-13 CGYAU - Jun 13, 12:35 UTCJun 13, 14:35 UTC2h 0m
2026-06-13 CGYAU - Jun 13, 01:45 UTCJun 13, 03:25 UTC1h 40m
2026-06-08 CGYAU - Jun 8, 18:25 UTCJun 8, 19:10 UTC45m
2026-06-08 CGYAU - Jun 8, 15:20 UTCJun 8, 16:00 UTC40m
2026-06-08 CGYAU - Jun 8, 13:15 UTCJun 8, 13:55 UTC40m
2026-06-07 CGYAU - Jun 7, 20:05 UTCJun 7, 20:45 UTC40m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the C-GYAU page for operator, model, and routing details .

Mode-S C0841D frequently asked

What is Mode-S code C0841D?
C0841D is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-GYAU.
Where is Mode-S C0841D registered?
Mode-S code C0841D is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C0841D broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 16:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C0841D, octal 60102035, decimal 12,616,733.
What flights does C0841D operate?
Mode-S C0841D has broadcast 1 distinct callsign, including CGYAU.