Apparatus

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sensors Mode-S transponder

C023C8

ICAO 24-bit transponder address · allocated to Canada

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

Hex
C023C8
Octal
60021710
Decimal
12,592,072
Country
CA
Tail
C-FNOH
Type
B789
Broadcasting now · callsign ACA91 · 34,000 ft
Flights observed
141
Distinct callsigns
20
Country
CA
Last broadcast
12h ago

Current position

C023C8 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address C023C8 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
ACA90 Air Canada 13 2026-05-29
ACA91 Air Canada 11 2026-05-14
ACA881 Air Canada 8 2026-04-17
ACA880 Air Canada 8 2026-04-17
ACA026 Air Canada 8 2026-05-27
ACA025 Air Canada 7 2026-05-26
ACA843 Air Canada 4 2026-05-18
ACA840 Air Canada 4 2026-04-23
ACA4 Air Canada 4 2026-05-03
ACA107 Air Canada 4 2026-05-12
ACA96 Air Canada 3 2026-05-13
ACA921 Air Canada 3 2026-05-17
ACA920 Air Canada 3 2026-05-17
ACA842 Air Canada 3 2026-05-18
ACA800 Air Canada 3 2026-04-18
ACA62 Air Canada 3 2026-05-09
ACA23 Air Canada 3 2026-05-04
ACA112 Air Canada 3 2026-05-28
ACA987 Air Canada 2 2026-04-15
ACA986 Air Canada 2 2026-04-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 ACA90 YYZ → GRU May 29, 03:45 UTCMay 29, 12:50 UTC9h 5m
2026-05-28 ACA112 YVR → YYZ May 28, 21:05 UTCMay 29, 00:55 UTC3h 50m
2026-05-28 ACA839 FRA → YOW May 28, 09:10 UTCMay 28, 18:35 UTC9h 25m
2026-05-28 ACA839 FRA → YOW May 28, 09:07 UTCMay 28, 18:31 UTC9h 24m
2026-05-27 ACA838 YOW → FRA May 27, 21:35 UTCMay 28, 06:30 UTC8h 55m
2026-05-27 ACA026 PVG → YVR May 27, 02:29 UTCMay 27, 18:30 UTC16h 0m
2026-05-26 ACA026 PVG → YVR May 26, 22:05 UTCMay 27, 18:30 UTC20h 25m
2026-05-26 ACA025 YVR → PVG May 26, 20:05 UTCMay 27, 18:30 UTC22h 25m
2026-05-26 ACA025 YVR → PVG May 26, 18:05 UTCMay 27, 18:00 UTC23h 55m
2026-05-25 ACA030 PEK → YVR May 25, 12:00 UTCMay 25, 21:35 UTC9h 34m
2026-05-24 ACA029 YYZ → PEK May 24, 20:21 UTCMay 25, 08:03 UTC11h 42m
2026-05-24 ACA029 YYZ → PEK May 24, 20:25 UTCMay 25, 06:45 UTC10h 20m
2026-05-24 ACA026 PVG → YVR May 24, 02:15 UTCMay 24, 18:00 UTC15h 45m
2026-05-23 ACA025 YVR → PVG May 23, 20:05 UTCMay 24, 18:00 UTC21h 55m
2026-05-23 ACA025 YVR → PVG May 23, 18:05 UTCMay 24, 18:00 UTC23h 55m
2026-05-23 ACA8 ICN → YVR May 23, 01:50 UTCMay 23, 12:40 UTC10h 50m
2026-05-22 ACA7 ICN → HKG May 22, 08:05 UTCMay 22, 21:15 UTC13h 10m
2026-05-22 ACA127 YYZ → YVR May 22, 01:30 UTCMay 22, 05:50 UTC4h 20m
2026-05-22 ACA127 YYZ → YVR May 22, 01:29 UTCMay 22, 05:38 UTC4h 9m
2026-05-21 ACA837 MUC → YYZ May 21, 10:00 UTCMay 21, 18:00 UTC8h 0m
2026-05-21 ACA837 MUC → YYZ May 21, 09:56 UTCMay 21, 17:49 UTC7h 53m
2026-05-20 ACA836 YYZ → MUC May 20, 22:35 UTCMay 21, 05:45 UTC7h 10m
2026-05-20 ACA7230 YYZ → MAD May 20, 17:35 UTCMay 20, 19:00 UTC1h 25m
2026-05-18 ACA843 FRA → YYZ May 18, 21:55 UTCMay 18, 23:10 UTC1h 15m
2026-05-18 ACA843 FRA → YYZ May 18, 15:25 UTCMay 18, 17:25 UTC2h 0m
2026-05-18 ACA843 FRA → YYZ May 18, 15:23 UTCMay 18, 22:54 UTC7h 31m
2026-05-18 ACA842 YYZ → FRA May 18, 03:05 UTCMay 18, 08:45 UTC5h 40m
2026-05-18 ACA842 YYZ → FRA May 18, 01:35 UTCMay 18, 03:01 UTC1h 25m
2026-05-17 ACA921 PBI → YYZ May 17, 12:50 UTCMay 17, 22:45 UTC9h 55m
2026-05-17 ACA921 PBI → YYZ May 17, 12:49 UTCMay 17, 22:45 UTC9h 56m
2026-05-17 ACA920 YYZ → PBI May 17, 01:30 UTCMay 17, 10:20 UTC8h 50m
2026-05-17 ACA920 YYZ → PBI May 17, 01:29 UTCMay 17, 10:08 UTC8h 39m
2026-05-16 ACA855 LHR → YYZ May 16, 16:00 UTCMay 16, 23:05 UTC7h 5m
2026-05-16 ACA852 YYZ → LHR May 16, 07:41 UTCMay 16, 14:11 UTC6h 30m
2026-05-14 ACA91 EZE → GRU May 14, 00:45 UTCMay 14, 10:35 UTC9h 50m
2026-05-13 ACA91 EZE → GRU May 13, 19:35 UTCMay 13, 21:45 UTC2h 10m
2026-05-13 ACA90 YYZ → GRU May 13, 15:15 UTCMay 13, 16:00 UTC45m
2026-05-13 ACA90 YYZ → GRU May 13, 15:10 UTCMay 13, 17:33 UTC2h 23m
2026-05-13 ACA96 YUL → GRU May 13, 03:25 UTCMay 13, 12:25 UTC9h 0m
2026-05-13 ACA96 YUL → GRU May 13, 03:25 UTCMay 13, 12:25 UTC9h 0m
2026-05-12 ACA308 YVR → YUL May 12, 20:25 UTCMay 13, 00:25 UTC4h 0m
2026-05-12 ACA107 YYZ → YVR May 12, 14:05 UTCMay 12, 18:25 UTC4h 20m
2026-05-12 ACA107 YYZ → YVR May 12, 14:03 UTCMay 12, 18:17 UTC4h 14m
2026-05-12 ACA91 EZE → GRU May 12, 05:30 UTCMay 12, 11:05 UTC5h 35m
2026-05-11 ACA91 EZE → GRU May 11, 19:40 UTCMay 11, 21:55 UTC2h 15m
2026-05-11 ACA90 YYZ → GRU May 11, 14:50 UTCMay 11, 17:15 UTC2h 26m
2026-05-11 ACA90 YYZ → GRU May 11, 03:32 UTCMay 11, 12:36 UTC9h 4m
2026-05-11 ACA90 YYZ → GRU May 11, 03:35 UTCMay 11, 12:50 UTC9h 15m
2026-05-10 ACA921 PBI → YYZ May 10, 15:05 UTCMay 11, 01:20 UTC10h 15m
2026-05-10 ACA920 YYZ → PBI May 10, 04:04 UTCMay 10, 12:54 UTC8h 50m

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

Mode-S C023C8 frequently asked

What is Mode-S code C023C8?
C023C8 is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-FNOH.
Where is Mode-S C023C8 registered?
Mode-S code C023C8 is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C023C8 broadcasting right now?
Yes. Mode-S C023C8 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C023C8, octal 60021710, decimal 12,592,072.
What flights does C023C8 operate?
Mode-S C023C8 has broadcast 20 distinct callsigns, including ACA90, ACA91, ACA881, ACA880, ACA026.