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sensors Mode-S transponder

C023BD

ICAO 24-bit transponder address · allocated to Canada

Currently assigned to C-FNNW · BOEING 777-300ER · operated by Air Canada

Hex
C023BD
Octal
60021675
Decimal
12,592,061
Country
CA
Tail
C-FNNW
Type
B77W
Transponder active on ground
Flights observed
241
Distinct callsigns
20
Country
CA
Last broadcast
21m ago

Last known position

Most recent position reported by Mode-S C023BD.

Country allocation

The ICAO 24-bit address C023BD 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 20 distinct

Callsign Airline Flights Last seen
ACA874 - 22 2026-07-09
ACA893 - 20 2026-07-13
ACA871 - 20 2026-07-12
ACA898 - 19 2026-07-13
ACA5 - 19 2026-06-28
ACA899 - 18 2026-07-01
ACA892 - 18 2026-07-13
ACA870 - 18 2026-07-12
ACA875 - 16 2026-07-10
ACA311 - 16 2026-07-10
ACA304 - 15 2026-07-11
ACA6 Air Canada 14 2026-06-29
ACA833 Air Canada 6 2026-06-28
ACA832 - 5 2026-06-27
ACA922 Air Canada 3 2026-04-25
ACA923 Air Canada 2 2026-04-25
ACA7058 Air Canada 2 2026-06-14
ACA7051 Air Canada 2 2026-06-09
ACA306 Air Canada 2 2026-06-26
ACA301 - 2 2026-06-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 ACA898 - Jul 13, 23:05 UTCJul 14, 07:15 UTC8h 10m
2026-07-13 ACA893 - Jul 13, 17:30 UTCJul 13, 18:45 UTC1h 15m
2026-07-13 ACA893 - Jul 13, 10:30 UTCJul 13, 17:25 UTC6h 55m
2026-07-13 ACA892 - Jul 13, 00:10 UTCJul 13, 07:40 UTC7h 30m
2026-07-13 ACA892 YUL → FCO Jul 13, 00:06 UTCJul 13, 07:43 UTC7h 37m
2026-07-12 ACA871 - Jul 12, 13:40 UTCJul 12, 20:15 UTC6h 35m
2026-07-12 ACA870 YUL → CDG Jul 12, 02:01 UTCJul 12, 08:25 UTC6h 25m
2026-07-11 ACA304 YVR → YUL Jul 11, 16:45 UTCJul 11, 20:45 UTC4h 0m
2026-07-10 ACA311 YUL → YVR Jul 10, 22:00 UTCJul 11, 02:50 UTC4h 50m
2026-07-10 ACA875 - Jul 10, 09:50 UTCJul 10, 16:55 UTC7h 5m
2026-07-09 ACA874 YUL → CDG Jul 9, 23:10 UTCJul 10, 05:09 UTC5h 59m
2026-07-09 ACA874 YUL → CDG Jul 9, 23:10 UTCJul 10, 05:20 UTC6h 10m
2026-07-09 ACA871 - Jul 9, 12:45 UTCJul 9, 13:15 UTC30m
2026-07-09 ACA871 CDG → YUL Jul 9, 12:40 UTCJul 9, 19:42 UTC7h 2m
2026-07-09 ACA870 YUL → CDG Jul 9, 02:00 UTCJul 9, 08:05 UTC6h 5m
2026-07-09 ACA870 - Jul 9, 02:00 UTCJul 9, 03:10 UTC1h 10m
2026-07-08 ACA893 FCO → YUL Jul 8, 12:45 UTCJul 8, 20:50 UTC8h 5m
2026-07-08 ACA892 - Jul 8, 02:25 UTCJul 8, 10:00 UTC7h 35m
2026-07-07 ACA875 - Jul 7, 08:30 UTCJul 7, 15:10 UTC6h 40m
2026-07-06 ACA874 YUL → CDG Jul 6, 23:15 UTCJul 7, 05:20 UTC6h 5m
2026-07-06 ACA874 YUL → CDG Jul 6, 23:11 UTCJul 7, 05:12 UTC6h 1m
2026-07-06 ACA875 - Jul 6, 08:20 UTCJul 6, 15:15 UTC6h 55m
2026-07-05 ACA874 YUL → CDG Jul 5, 22:40 UTCJul 6, 04:45 UTC6h 5m
2026-07-05 ACA875 - Jul 5, 08:15 UTCJul 5, 15:10 UTC6h 55m
2026-07-04 ACA874 YUL → CDG Jul 4, 23:00 UTCJul 5, 04:55 UTC5h 55m
2026-07-04 ACA875 - Jul 4, 08:35 UTCJul 4, 15:40 UTC7h 5m
2026-07-03 ACA874 - Jul 3, 22:35 UTCJul 4, 04:25 UTC5h 50m
2026-07-03 ACA875 - Jul 3, 08:50 UTCJul 3, 15:50 UTC7h 0m
2026-07-03 ACA874 YUL → CDG Jul 3, 00:19 UTCJul 3, 06:15 UTC5h 56m
2026-07-03 ACA874 - Jul 3, 00:20 UTCJul 3, 01:15 UTC55m
2026-07-02 ACA304 YVR → YUL Jul 2, 16:15 UTCJul 2, 20:25 UTC4h 10m
2026-07-01 ACA311 YUL → YVR Jul 1, 22:10 UTCJul 2, 03:00 UTC4h 50m
2026-07-01 ACA899 YUL → YUL Jul 1, 19:05 UTCJul 1, 19:10 UTC5m
2026-07-01 ACA899 ATH → YUL Jul 1, 09:40 UTCJul 1, 18:50 UTC9h 10m
2026-07-01 ACA899 ATH → YUL Jul 1, 09:40 UTCJul 1, 19:10 UTC9h 30m
2026-07-01 ACA898 - Jul 1, 07:05 UTCJul 1, 07:10 UTC5m
2026-06-30 ACA898 YUL → ATH Jun 30, 22:49 UTCJul 1, 06:47 UTC7h 58m
2026-06-30 ACA898 - Jun 30, 22:50 UTCJul 1, 05:15 UTC6h 25m
2026-06-30 ACA893 FCO → YUL Jun 30, 10:05 UTCJun 30, 18:25 UTC8h 20m
2026-06-30 ACA893 FCO → YUL Jun 30, 10:01 UTCJun 30, 18:11 UTC8h 10m
2026-06-30 ACA892 YUL → FCO Jun 30, 00:09 UTCJun 30, 07:30 UTC7h 21m
2026-06-29 ACA6 NRT → YUL Jun 29, 08:54 UTCJun 29, 20:30 UTC11h 35m
2026-06-28 ACA5 YUL → NRT Jun 28, 17:19 UTCJun 29, 05:59 UTC12h 40m
2026-06-28 ACA5 YUL → NRT Jun 28, 17:19 UTCJun 29, 05:49 UTC12h 30m
2026-06-28 ACA833 BRU → YUL Jun 28, 08:00 UTCJun 28, 14:54 UTC6h 55m
2026-06-27 ACA832 - Jun 27, 22:55 UTCJun 28, 00:15 UTC1h 20m
2026-06-27 ACA832 YUL → BRU Jun 27, 22:51 UTCJun 28, 04:52 UTC6h 1m
2026-06-27 ACA871 - Jun 27, 12:39 UTCJun 27, 19:19 UTC6h 40m
2026-06-27 ACA870 - Jun 27, 01:59 UTCJun 27, 08:14 UTC6h 15m
2026-06-26 ACA306 YVR → YUL Jun 26, 18:49 UTCJun 26, 22:55 UTC4h 5m

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-FNNW page for operator, model, and routing details .

Mode-S C023BD frequently asked

What is Mode-S code C023BD?
C023BD is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-FNNW.
Where is Mode-S C023BD registered?
Mode-S code C023BD is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C023BD broadcasting right now?
Mode-S C023BD is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C023BD, octal 60021675, decimal 12,592,061.
What flights does C023BD operate?
Mode-S C023BD has broadcast 20 distinct callsigns, including ACA874, ACA893, ACA871, ACA898, ACA5.