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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
Broadcasting now · callsign ACA833 · 34,725 ft
Flights observed
264
Distinct callsigns
20
Country
CA
Last broadcast
3h ago

Current position

C023B7 is currently broadcasting. Map zoomed to live position.

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 - 30 2026-07-13
ACA870 - 28 2026-07-13
ACA6 - 26 2026-07-10
ACA5 - 25 2026-07-09
ACA874 - 23 2026-07-08
ACA304 - 22 2026-07-12
ACA892 - 19 2026-07-05
ACA311 - 19 2026-07-11
ACA893 Air Canada 18 2026-07-06
ACA875 - 17 2026-07-09
ACA899 - 9 2026-07-04
ACA832 - 7 2026-07-13
ACA898 - 5 2026-07-03
ACA833 Air Canada 5 2026-06-29
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
2026-07-13 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
2026-07-06 ACA311 YUL → YVR Jul 6, 21:50 UTCJul 7, 02:40 UTC4h 50m
2026-07-06 ACA893 FCO → YUL Jul 6, 09:55 UTCJul 6, 18:10 UTC8h 15m
2026-07-05 ACA892 YUL → FCO Jul 5, 23:45 UTCJul 6, 06:50 UTC7h 5m
2026-07-05 ACA304 - Jul 5, 16:40 UTCJul 5, 20:40 UTC4h 0m
2026-07-04 ACA311 YUL → YVR Jul 4, 22:10 UTCJul 5, 03:05 UTC4h 55m
2026-07-04 ACA899 - Jul 4, 18:40 UTCJul 4, 19:40 UTC1h 0m
2026-07-04 ACA899 - Jul 4, 10:05 UTCJul 4, 18:35 UTC8h 30m
2026-07-04 ACA899 ATH → YUL Jul 4, 10:03 UTCJul 4, 19:24 UTC9h 21m
2026-07-03 ACA898 YUL → ATH Jul 3, 22:40 UTCJul 4, 06:50 UTC8h 10m
2026-07-03 ACA871 - Jul 3, 12:30 UTCJul 3, 19:20 UTC6h 50m
2026-07-03 ACA870 - Jul 3, 04:20 UTCJul 3, 10:15 UTC5h 55m
2026-07-02 ACA875 - Jul 2, 08:35 UTCJul 2, 16:00 UTC7h 25m
2026-07-01 ACA874 YUL → CDG Jul 1, 22:45 UTCJul 2, 04:50 UTC6h 5m
2026-07-01 ACA893 FCO → YUL Jul 1, 10:05 UTCJul 1, 18:25 UTC8h 20m
2026-06-30 ACA892 - Jun 30, 23:50 UTCJul 1, 05:45 UTC5h 55m
2026-06-30 ACA892 YUL → FCO Jun 30, 23:46 UTCJul 1, 06:49 UTC7h 3m
2026-06-30 ACA6 NRT → YUL Jun 30, 08:55 UTCJun 30, 20:35 UTC11h 40m
2026-06-29 ACA5 YUL → NRT Jun 29, 18:05 UTCJun 30, 06:25 UTC12h 20m
2026-06-29 ACA833 BRU → YUL Jun 29, 08:39 UTCJun 29, 15:30 UTC6h 50m
2026-06-28 ACA832 YUL → BRU Jun 28, 22:59 UTCJun 29, 05:15 UTC6h 15m
2026-06-28 ACA871 - Jun 28, 12:25 UTCJun 28, 19:14 UTC6h 50m
2026-06-28 ACA870 YUL → CDG Jun 28, 02:25 UTCJun 28, 08:34 UTC6h 10m
2026-06-27 ACA304 YVR → YUL Jun 27, 16:44 UTCJun 27, 20:55 UTC4h 10m
2026-06-26 ACA311 YUL → YVR Jun 26, 21:55 UTCJun 27, 02:50 UTC4h 55m
2026-06-26 ACA899 - Jun 26, 09:55 UTCJun 26, 11:45 UTC1h 50m
2026-06-26 ACA899 ATH → YUL Jun 26, 09:54 UTCJun 26, 18:58 UTC9h 4m
2026-06-25 ACA898 YUL → ATH Jun 25, 22:39 UTCJun 26, 07:05 UTC8h 25m
2026-06-25 ACA875 - Jun 25, 08:24 UTCJun 25, 15:15 UTC6h 50m
2026-06-24 ACA874 - Jun 24, 22:49 UTCJun 25, 04:54 UTC6h 5m
2026-06-24 ACA871 - Jun 24, 13:00 UTCJun 24, 19:55 UTC6h 55m
2026-06-24 ACA870 YUL → CDG Jun 24, 01:44 UTCJun 24, 07:40 UTC5h 55m

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?
Yes. Mode-S C023B7 is currently airborne.
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, ACA870, ACA6, ACA5, ACA874.