Apparatus

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sensors Mode-S transponder

C023C9

ICAO 24-bit transponder address · allocated to Canada

Currently assigned to C-FNOI · BOEING 787-9 Dreamliner · operated by Air Canada

Hex
C023C9
Octal
60021711
Decimal
12,592,073
Country
CA
Tail
C-FNOI
Type
B789
No current signal · last broadcast 1h ago
Flights observed
131
Distinct callsigns
20
Country
CA
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S C023C9.

Country allocation

The ICAO 24-bit address C023C9 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
ACA029 Air Canada 10 2026-05-07
ACA7 Air Canada 8 2026-05-01
ACA64 Air Canada 8 2026-05-21
ACA63 Air Canada 8 2026-05-20
ACA8 Air Canada 6 2026-05-02
ACA881 Air Canada 5 2026-05-26
ACA62 Air Canada 5 2026-05-24
ACA303 Air Canada 5 2026-05-18
ACA801 Air Canada 4 2026-05-28
ACA308 Air Canada 4 2026-05-17
ACA030 Air Canada 4 2026-05-08
ACA026 Air Canada 4 2026-04-27
ACA025 Air Canada 4 2026-04-26
ACA918 Air Canada 3 2026-05-22
ACA880 Air Canada 3 2026-05-26
ACA839 Air Canada 3 2026-05-22
ACA829 Air Canada 3 2026-05-16
ACA828 Air Canada 3 2026-05-16
ACA61 Air Canada 3 2026-05-23
ACA35 Air Canada 3 2026-04-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 ACA9 YYZ → NRT May 29, 18:05 UTCMay 30, 00:15 UTC6h 10m
2026-05-28 ACA801 DUB → YYZ May 28, 10:25 UTCMay 28, 16:40 UTC6h 15m
2026-05-28 ACA800 YYZ → DUB May 28, 01:15 UTCMay 28, 07:25 UTC6h 10m
2026-05-27 ACA837 MUC → YYZ May 27, 10:00 UTCMay 27, 18:05 UTC8h 5m
2026-05-27 ACA837 MUC → YYZ May 27, 09:57 UTCMay 27, 17:53 UTC7h 56m
2026-05-26 ACA836 YYZ → MUC May 26, 21:59 UTCMay 27, 05:24 UTC7h 25m
2026-05-26 ACA881 ZRH → YYZ May 26, 18:10 UTCMay 26, 19:34 UTC1h 25m
2026-05-26 ACA881 ZRH → YYZ May 26, 11:40 UTCMay 26, 19:25 UTC7h 45m
2026-05-26 ACA881 ZRH → YYZ May 26, 11:44 UTCMay 26, 18:05 UTC6h 20m
2026-05-26 ACA880 YYZ → ZRH May 26, 00:49 UTCMay 26, 07:59 UTC7h 10m
2026-05-25 ACA907 FCO → YYZ May 25, 12:45 UTCMay 25, 15:15 UTC2h 30m
2026-05-25 ACA907 FCO → YYZ May 25, 12:42 UTCMay 25, 21:12 UTC8h 30m
2026-05-25 ACA906 YYZ → FCO May 25, 01:55 UTCMay 25, 09:45 UTC7h 50m
2026-05-24 ACA62 ICN → YYZ May 24, 10:15 UTCMay 24, 21:45 UTC11h 30m
2026-05-23 ACA61 YYZ → ICN May 23, 18:10 UTCMay 24, 07:25 UTC13h 15m
2026-05-23 ACA801 DUB → YYZ May 23, 09:00 UTCMay 23, 15:35 UTC6h 35m
2026-05-22 ACA918 YYZ → MIA May 22, 22:25 UTCMay 23, 06:45 UTC8h 19m
2026-05-22 ACA839 FRA → YOW May 22, 09:05 UTCMay 22, 10:15 UTC1h 10m
2026-05-22 ACA839 FRA → YOW May 22, 09:04 UTCMay 22, 18:26 UTC9h 22m
2026-05-21 ACA838 YOW → FRA May 21, 20:50 UTCMay 22, 05:55 UTC9h 5m
2026-05-21 ACA64 ICN → YVR May 21, 09:05 UTCMay 21, 18:00 UTC8h 55m
2026-05-21 ACA64 ICN → YVR May 21, 09:02 UTCMay 21, 17:51 UTC8h 49m
2026-05-20 ACA63 YVR → ICN May 20, 20:00 UTCMay 21, 07:00 UTC11h 0m
2026-05-20 ACA107 YYZ → YVR May 20, 13:20 UTCMay 20, 17:40 UTC4h 20m
2026-05-20 ACA91 EZE → GRU May 20, 00:50 UTCMay 20, 10:30 UTC9h 41m
2026-05-19 ACA90 YYZ → GRU May 19, 02:40 UTCMay 19, 12:15 UTC9h 35m
2026-05-18 ACA112 YVR → YYZ May 18, 19:40 UTCMay 18, 23:30 UTC3h 50m
2026-05-18 ACA303 YUL → YVR May 18, 12:45 UTCMay 18, 14:15 UTC1h 30m
2026-05-18 ACA303 YUL → YVR May 18, 12:45 UTCMay 18, 17:23 UTC4h 38m
2026-05-17 ACA308 YVR → YUL May 17, 20:20 UTCMay 17, 22:15 UTC1h 55m
2026-05-17 ACA308 YVR → YUL May 17, 20:20 UTCMay 18, 00:19 UTC3h 59m
2026-05-17 ACA919 MIA → YYZ May 17, 09:00 UTCMay 17, 17:10 UTC8h 10m
2026-05-17 ACA800 YYZ → DUB May 17, 01:00 UTCMay 17, 07:00 UTC6h 0m
2026-05-16 ACA829 CPH → YYZ May 16, 10:55 UTCMay 16, 18:20 UTC7h 25m
2026-05-16 ACA829 CPH → YYZ May 16, 10:51 UTCMay 16, 18:15 UTC7h 24m
2026-05-16 ACA828 YYZ → CPH May 16, 01:55 UTCMay 16, 09:01 UTC7h 6m
2026-05-15 ACA841 FRA → YYZ May 15, 08:20 UTCMay 15, 16:05 UTC7h 44m
2026-05-14 ACA840 YYZ → FRA May 14, 20:55 UTCMay 15, 03:50 UTC6h 55m
2026-05-14 ACA829 CPH → YYZ May 14, 11:01 UTCMay 14, 18:40 UTC7h 40m
2026-05-14 ACA828 YYZ → CPH May 14, 01:34 UTCMay 14, 08:28 UTC6h 54m
2026-05-14 ACA828 YYZ → CPH May 14, 01:35 UTCMay 14, 08:40 UTC7h 5m
2026-05-13 ACA62 ICN → YYZ May 13, 10:45 UTCMay 13, 23:20 UTC12h 35m
2026-05-12 ACA61 YYZ → ICN May 12, 18:30 UTCMay 13, 08:40 UTC14h 10m
2026-05-11 ACA62 ICN → YYZ May 11, 11:40 UTCMay 11, 12:10 UTC30m
2026-05-11 ACA62 ICN → YYZ May 11, 11:38 UTCMay 11, 23:56 UTC12h 18m
2026-05-11 ACA62 ICN → YYZ May 11, 11:38 UTCMay 12, 00:25 UTC12h 47m
2026-05-10 ACA61 YYZ → ICN May 10, 18:05 UTCMay 11, 07:45 UTC13h 40m
2026-05-10 ACA801 DUB → YYZ May 10, 09:30 UTCMay 10, 10:15 UTC45m
2026-05-10 ACA801 DUB → YYZ May 10, 09:29 UTCMay 10, 15:56 UTC6h 27m
2026-05-09 ACA918 YYZ → MIA May 9, 22:25 UTCMay 10, 06:25 UTC8h 0m

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

Mode-S C023C9 frequently asked

What is Mode-S code C023C9?
C023C9 is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-FNOI.
Where is Mode-S C023C9 registered?
Mode-S code C023C9 is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C023C9 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C023C9, octal 60021711, decimal 12,592,073.
What flights does C023C9 operate?
Mode-S C023C9 has broadcast 20 distinct callsigns, including ACA029, ACA7, ACA64, ACA63, ACA8.