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sensors Mode-S transponder

C023AE

ICAO 24-bit transponder address · allocated to Canada

Currently assigned to C-FNNH · BOEING 777-200LR · operated by Air Canada

Hex
C023AE
Octal
60021656
Decimal
12,592,046
Country
CA
Tail
C-FNNH
Type
B77L
No current signal · last broadcast Jul 26, 18:30 UTC
Flights observed
242
Distinct callsigns
20
Country
CA
Last broadcast
Jul 26, 18:30 UTC

Last known position

Most recent position reported by Mode-S C023AE.

Country allocation

The ICAO 24-bit address C023AE 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
ACA34 - 54 2026-07-05
ACA33 Air Canada 47 2026-07-04
ACA43 Air Canada 23 2026-07-22
ACA42 Air Canada 20 2026-07-22
ACA855 Air Canada 11 2026-07-26
ACA843 Air Canada 10 2026-07-25
ACA852 Air Canada 9 2026-07-26
ACA842 Air Canada 9 2026-07-25
ACA897 - 6 2026-07-08
ACA881 - 6 2026-07-10
ACA880 - 6 2026-07-10
ACA139 Air Canada 5 2026-04-23
ACA107 Air Canada 5 2026-05-14
ACA896 - 4 2026-07-07
ACA887 Air Canada 4 2026-07-07
ACA146 Air Canada 4 2026-04-23
ACA112 Air Canada 4 2026-05-14
ACA886 - 2 2026-07-07
ACA48 Air Canada 2 2026-05-24
ACA2385 Air Canada 2 2026-04-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ACA855 LHR → YYZ Jul 26, 11:05 UTCJul 26, 18:20 UTC7h 15m
2026-07-26 ACA852 YYZ → LHR Jul 26, 01:55 UTCJul 26, 08:15 UTC6h 21m
2026-07-25 ACA843 FRA → YYZ Jul 25, 15:25 UTCJul 25, 23:15 UTC7h 50m
2026-07-25 ACA842 YYZ → FRA Jul 25, 02:20 UTCJul 25, 09:15 UTC6h 55m
2026-07-24 ACA855 LHR → YYZ Jul 24, 11:20 UTCJul 24, 18:30 UTC7h 10m
2026-07-24 ACA852 YYZ → LHR Jul 24, 02:10 UTCJul 24, 08:40 UTC6h 30m
2026-07-22 ACA43 DEL → YYZ Jul 22, 17:30 UTCJul 23, 08:55 UTC15h 25m
2026-07-22 ACA43 DEL → YYZ Jul 22, 17:29 UTCJul 23, 08:57 UTC15h 28m
2026-07-22 ACA42 YYZ → DEL Jul 22, 00:55 UTCJul 22, 14:20 UTC13h 25m
2026-07-21 ACA855 LHR → YYZ Jul 21, 11:40 UTCJul 21, 18:50 UTC7h 10m
2026-07-21 ACA852 YYZ → LHR Jul 21, 03:00 UTCJul 21, 09:30 UTC6h 30m
2026-07-20 ACA843 FRA → YYZ Jul 20, 15:55 UTCJul 20, 17:30 UTC1h 35m
2026-07-20 ACA843 FRA → YYZ Jul 20, 15:55 UTCJul 20, 23:32 UTC7h 37m
2026-07-20 ACA842 YYZ → FRA Jul 20, 01:50 UTCJul 20, 09:00 UTC7h 10m
2026-07-19 ACA843 FRA → YYZ Jul 19, 15:30 UTCJul 19, 23:10 UTC7h 40m
2026-07-19 ACA842 YYZ → FRA Jul 19, 02:06 UTCJul 19, 08:58 UTC6h 52m
2026-07-19 ACA842 YYZ → FRA Jul 19, 02:10 UTCJul 19, 03:30 UTC1h 20m
2026-07-18 ACA843 FRA → YYZ Jul 18, 15:20 UTCJul 18, 23:30 UTC8h 10m
2026-07-18 ACA842 YYZ → FRA Jul 18, 02:00 UTCJul 18, 09:25 UTC7h 26m
2026-07-17 ACA843 FRA → YYZ Jul 17, 15:40 UTCJul 17, 17:30 UTC1h 50m
2026-07-17 ACA843 FRA → YYZ Jul 17, 15:38 UTCJul 17, 23:11 UTC7h 33m
2026-07-17 ACA842 YYZ → FRA Jul 17, 02:10 UTCJul 17, 09:35 UTC7h 25m
2026-07-16 ACA843 FRA → YYZ Jul 16, 15:25 UTCJul 16, 23:15 UTC7h 50m
2026-07-16 ACA842 YYZ → FRA Jul 16, 01:50 UTCJul 16, 09:00 UTC7h 10m
2026-07-15 ACA843 FRA → YYZ Jul 15, 15:30 UTCJul 15, 23:10 UTC7h 40m
2026-07-15 ACA846 YUL → FRA Jul 15, 02:10 UTCJul 15, 08:55 UTC6h 45m
2026-07-14 ACA847 FRA → YUL Jul 14, 16:30 UTCJul 14, 23:35 UTC7h 4m
2026-07-14 ACA842 YYZ → FRA Jul 14, 02:00 UTCJul 14, 09:15 UTC7h 15m
2026-07-13 ACA843 FRA → YYZ Jul 13, 15:30 UTCJul 13, 23:05 UTC7h 35m
2026-07-13 ACA842 - Jul 13, 02:50 UTCJul 13, 10:00 UTC7h 10m
2026-07-12 ACA43 - Jul 12, 09:15 UTCJul 12, 09:25 UTC10m
2026-07-11 ACA43 DEL → YYZ Jul 11, 18:02 UTCJul 12, 08:58 UTC14h 56m
2026-07-11 ACA43 DEL → YYZ Jul 11, 18:05 UTCJul 12, 09:25 UTC15h 20m
2026-07-11 ACA42 YYZ → DEL Jul 11, 00:02 UTCJul 11, 13:16 UTC13h 14m
2026-07-11 ACA42 - Jul 11, 00:05 UTCJul 11, 13:25 UTC13h 20m
2026-07-10 ACA881 ZRH → YYZ Jul 10, 12:40 UTCJul 10, 20:50 UTC8h 10m
2026-07-10 ACA880 - Jul 10, 05:25 UTCJul 10, 07:40 UTC2h 15m
2026-07-10 ACA880 - Jul 10, 00:30 UTCJul 10, 02:00 UTC1h 30m
2026-07-09 ACA881 ZRH → YYZ Jul 9, 12:45 UTCJul 9, 20:55 UTC8h 10m
2026-07-09 ACA880 YYZ → ZRH Jul 9, 00:40 UTCJul 9, 07:55 UTC7h 15m
2026-07-08 ACA897 - Jul 8, 10:45 UTCJul 8, 11:30 UTC45m
2026-07-08 ACA897 ATH → YYZ Jul 8, 10:45 UTCJul 8, 20:42 UTC9h 57m
2026-07-07 ACA896 YYZ → ATH Jul 7, 22:50 UTCJul 8, 08:05 UTC9h 15m
2026-07-07 ACA887 VIE → YYZ Jul 7, 09:35 UTCJul 7, 11:30 UTC1h 55m
2026-07-07 ACA887 VIE → YYZ Jul 7, 09:34 UTCJul 7, 17:49 UTC8h 15m
2026-07-07 ACA886 YYZ → VIE Jul 7, 00:20 UTCJul 7, 07:50 UTC7h 30m
2026-07-06 ACA881 ZRH → YYZ Jul 6, 19:45 UTCJul 6, 19:50 UTC5m
2026-07-06 ACA881 ZRH → YYZ Jul 6, 11:39 UTCJul 6, 19:30 UTC7h 51m
2026-07-06 ACA881 ZRH → YYZ Jul 6, 11:40 UTCJul 6, 19:50 UTC8h 10m
2026-07-06 ACA880 YYZ → ZRH Jul 6, 00:15 UTCJul 6, 07:10 UTC6h 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-FNNH page for operator, model, and routing details .

Mode-S C023AE frequently asked

What is Mode-S code C023AE?
C023AE is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-FNNH.
Where is Mode-S C023AE registered?
Mode-S code C023AE is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C023AE broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C023AE, octal 60021656, decimal 12,592,046.
What flights does C023AE operate?
Mode-S C023AE has broadcast 20 distinct callsigns, including ACA34, ACA33, ACA43, ACA42, ACA855.