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sensors Mode-S transponder

C023B7

ICAO 24-bit transponder address · allocated to Canada

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

Hex
C023B7
Octal
60021667
Decimal
12,592,055
Country
CA
Tail
C-FNNQ
Type
B77W
No current signal · last broadcast Jul 26, 15:25 UTC
Flights observed
295
Distinct callsigns
20
Country
CA
Last broadcast
Jul 26, 15:25 UTC

Last known position

Most recent position reported by Mode-S C023B7.

Country allocation

The ICAO 24-bit address C023B7 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
ACA871 Air Canada 31 2026-07-19
ACA6 Air Canada 30 2026-07-23
ACA870 - 29 2026-07-19
ACA5 Air Canada 29 2026-07-22
ACA874 Air Canada 25 2026-07-25
ACA304 Air Canada 23 2026-07-25
ACA892 - 21 2026-07-18
ACA311 Air Canada 21 2026-07-24
ACA893 - 20 2026-07-18
ACA875 Air Canada 19 2026-07-26
ACA899 - 10 2026-07-17
ACA832 Air Canada 10 2026-07-21
ACA833 Air Canada 9 2026-07-22
ACA898 - 7 2026-07-16
ACA922 Air Canada 3 2026-04-22
ACA923 Air Canada 2 2026-04-22
ACA803 Air Canada 1 2026-06-18
ACA802 Air Canada 1 2026-06-18
ACA424 Air Canada 1 2026-06-01
ACA150 Air Canada 1 2026-05-31

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ACA875 CDG → YUL Jul 26, 08:30 UTCJul 26, 15:20 UTC6h 50m
2026-07-25 ACA874 YUL → CDG Jul 25, 23:35 UTCJul 26, 05:35 UTC6h 0m
2026-07-25 ACA304 YVR → YUL Jul 25, 16:25 UTCJul 25, 20:30 UTC4h 5m
2026-07-24 ACA311 YUL → YVR Jul 24, 21:50 UTCJul 25, 02:35 UTC4h 45m
2026-07-24 ACA311 YUL → YVR Jul 24, 21:48 UTCJul 25, 02:21 UTC4h 33m
2026-07-24 ACA875 CDG → YUL Jul 24, 08:30 UTCJul 24, 15:05 UTC6h 35m
2026-07-23 ACA874 YUL → CDG Jul 23, 22:55 UTCJul 24, 05:00 UTC6h 5m
2026-07-23 ACA6 NRT → YUL Jul 23, 08:50 UTCJul 23, 20:15 UTC11h 25m
2026-07-22 ACA5 YUL → NRT Jul 22, 17:25 UTCJul 23, 06:30 UTC13h 5m
2026-07-22 ACA833 BRU → YUL Jul 22, 13:15 UTCJul 22, 14:50 UTC1h 35m
2026-07-21 ACA832 YUL → BRU Jul 21, 22:55 UTCJul 22, 05:20 UTC6h 25m
2026-07-21 ACA6 - Jul 21, 08:55 UTCJul 21, 20:25 UTC11h 30m
2026-07-21 ACA6 NRT → YUL Jul 21, 08:50 UTCJul 21, 20:17 UTC11h 27m
2026-07-20 ACA5 YUL → NRT Jul 20, 17:44 UTCJul 21, 06:16 UTC12h 32m
2026-07-20 ACA5 YUL → NRT Jul 20, 17:45 UTCJul 21, 06:35 UTC12h 50m
2026-07-20 ACA833 BRU → YUL Jul 20, 08:20 UTCJul 20, 15:05 UTC6h 45m
2026-07-20 ACA833 BRU → YUL Jul 20, 08:18 UTCJul 20, 14:48 UTC6h 30m
2026-07-19 ACA832 YUL → BRU Jul 19, 22:45 UTCJul 20, 05:05 UTC6h 20m
2026-07-19 ACA832 YUL → BRU Jul 19, 22:41 UTCJul 20, 05:00 UTC6h 19m
2026-07-19 ACA871 CDG → YUL Jul 19, 13:15 UTCJul 19, 19:55 UTC6h 40m
2026-07-19 ACA870 YUL → CDG Jul 19, 04:35 UTCJul 19, 10:55 UTC6h 20m
2026-07-18 ACA893 - Jul 18, 09:55 UTCJul 18, 18:00 UTC8h 5m
2026-07-18 ACA892 - Jul 18, 00:00 UTCJul 18, 07:25 UTC7h 26m
2026-07-17 ACA899 ATH → YUL Jul 17, 11:15 UTCJul 17, 20:29 UTC9h 15m
2026-07-16 ACA898 YUL → ATH Jul 16, 23:51 UTCJul 17, 08:15 UTC8h 24m
2026-07-16 ACA898 YUL → ATH Jul 16, 23:55 UTCJul 17, 08:20 UTC8h 25m
2026-07-16 ACA893 - Jul 16, 11:10 UTCJul 16, 19:20 UTC8h 10m
2026-07-15 ACA892 - Jul 15, 23:55 UTCJul 16, 07:30 UTC7h 35m
2026-07-15 ACA6 - Jul 15, 09:00 UTCJul 15, 20:05 UTC11h 5m
2026-07-14 ACA5 YUL → NRT Jul 14, 17:25 UTCJul 15, 06:05 UTC12h 39m
2026-07-14 ACA833 BRU → YUL Jul 14, 08:10 UTCJul 14, 14:45 UTC6h 35m
2026-07-13 ACA832 YUL → BRU Jul 13, 23:20 UTCJul 14, 05:45 UTC6h 25m
2026-07-13 ACA871 - Jul 13, 12:40 UTCJul 13, 19:30 UTC6h 50m
2026-07-13 ACA870 YUL → CDG Jul 13, 02:01 UTCJul 13, 08:20 UTC6h 20m
2026-07-12 ACA304 YVR → YUL Jul 12, 16:37 UTCJul 12, 20:29 UTC3h 52m
2026-07-12 ACA304 - Jul 12, 16:40 UTCJul 12, 20:40 UTC4h 0m
2026-07-11 ACA311 YUL → YVR Jul 11, 22:10 UTCJul 12, 02:54 UTC4h 44m
2026-07-11 0311 - Jul 11, 22:10 UTCJul 11, 23:45 UTC1h 35m
2026-07-11 ACA871 - Jul 11, 12:30 UTCJul 11, 19:15 UTC6h 45m
2026-07-11 ACA871 CDG → YUL Jul 11, 12:21 UTCJul 11, 19:02 UTC6h 41m
2026-07-11 ACA870 - Jul 11, 02:10 UTCJul 11, 08:15 UTC6h 5m
2026-07-10 ACA6 - Jul 10, 09:00 UTCJul 10, 20:45 UTC11h 45m
2026-07-09 ACA5 YUL → NRT Jul 9, 17:50 UTCJul 10, 06:15 UTC12h 25m
2026-07-09 ACA5 YUL → NRT Jul 9, 17:47 UTCJul 10, 06:04 UTC12h 17m
2026-07-09 ACA875 - Jul 9, 08:30 UTCJul 9, 15:40 UTC7h 10m
2026-07-08 ACA874 - Jul 8, 23:05 UTCJul 9, 05:15 UTC6h 10m
2026-07-08 ACA304 YVR → YUL Jul 8, 16:29 UTCJul 8, 20:19 UTC3h 50m
2026-07-08 ACA304 - Jul 8, 16:30 UTCJul 8, 20:35 UTC4h 5m
2026-07-07 ACA311 YUL → YVR Jul 7, 23:25 UTCJul 8, 04:15 UTC4h 50m
2026-07-07 ACA304 YVR → YUL Jul 7, 16:30 UTCJul 7, 20:35 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-FNNQ page for operator, model, and routing details .

Mode-S C023B7 frequently asked

What is Mode-S code C023B7?
C023B7 is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-FNNQ.
Where is Mode-S C023B7 registered?
Mode-S code C023B7 is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C023B7 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 15:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C023B7, octal 60021667, decimal 12,592,055.
What flights does C023B7 operate?
Mode-S C023B7 has broadcast 20 distinct callsigns, including ACA871, ACA6, ACA870, ACA5, ACA874.