Apparatus

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sensors Mode-S transponder

C023AA

ICAO 24-bit transponder address · allocated to Canada

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

Hex
C023AA
Octal
60021652
Decimal
12,592,042
Country
CA
Tail
C-FNND
Type
B77L
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
258
Distinct callsigns
20
Country
CA
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S C023AA.

Country allocation

The ICAO 24-bit address C023AA 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 - 69 2026-07-06
ACA33 Air Canada 66 2026-07-05
ACA42 Air Canada 19 2026-07-19
ACA43 Air Canada 18 2026-07-19
ACA886 Air Canada 11 2026-07-26
ACA887 Air Canada 9 2026-07-24
ACA49 Air Canada 8 2026-05-08
ACA48 Air Canada 8 2026-05-22
ACA881 Air Canada 7 2026-07-18
ACA880 Air Canada 7 2026-07-18
ACA852 Air Canada 5 2026-07-22
ACA855 Air Canada 4 2026-07-22
ACA3XC - 3 2026-06-11
ACA891 - 2 2026-07-10
ACA821 - 2 2026-07-07
ACA2410 Air Canada 2 2026-04-26
ACA2385 Air Canada 2 2026-07-25
ACA2314 Air Canada 2 2026-07-25
ACA987 Air Canada 1 2026-04-22
ACA897 Air Canada 1 2026-06-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ACA886 YYZ → VIE Jul 26, 22:20 UTCJul 26, 22:30 UTC10m
2026-07-25 ACA2314 ICN → YVR Jul 25, 21:15 UTCJul 26, 00:50 UTC3h 35m
2026-07-25 ACA2314 ICN → YVR Jul 25, 21:11 UTCJul 26, 00:45 UTC3h 34m
2026-07-25 ACA2385 YEG → YVR Jul 25, 12:30 UTCJul 25, 17:00 UTC4h 30m
2026-07-25 ACA154 YYC → YYZ Jul 25, 06:30 UTCJul 25, 09:30 UTC3h 0m
2026-07-24 ACA325 YUL → YYC Jul 24, 23:50 UTCJul 25, 03:55 UTC4h 5m
2026-07-24 ACA418 YYZ → YUL Jul 24, 20:20 UTCJul 24, 21:10 UTC50m
2026-07-24 ACA887 VIE → YYZ Jul 24, 08:35 UTCJul 24, 10:30 UTC1h 55m
2026-07-24 ACA887 VIE → YYZ Jul 24, 08:34 UTCJul 24, 17:08 UTC8h 34m
2026-07-24 ACA887 VIE → YYZ Jul 24, 08:34 UTCJul 24, 16:54 UTC8h 20m
2026-07-23 ACA886 YYZ → VIE Jul 23, 22:25 UTCJul 24, 05:50 UTC7h 25m
2026-07-23 ACA887 VIE → YYZ Jul 23, 08:50 UTCJul 23, 17:35 UTC8h 45m
2026-07-22 ACA886 YYZ → VIE Jul 22, 22:30 UTCJul 23, 06:10 UTC7h 40m
2026-07-22 ACA855 LHR → YYZ Jul 22, 11:50 UTCJul 22, 12:30 UTC40m
2026-07-22 ACA855 LHR → YYZ Jul 22, 11:45 UTCJul 22, 18:44 UTC6h 59m
2026-07-22 ACA852 YYZ → LHR Jul 22, 01:55 UTCJul 22, 03:40 UTC1h 45m
2026-07-21 ACA843 FRA → YYZ Jul 21, 15:25 UTCJul 21, 23:25 UTC8h 0m
2026-07-21 ACA852 YYZ → LHR Jul 21, 03:00 UTCJul 21, 09:15 UTC6h 15m
2026-07-21 ACA842 YYZ → FRA Jul 21, 02:05 UTCJul 21, 09:05 UTC7h 0m
2026-07-19 ACA43 DEL → YYZ Jul 19, 17:40 UTCJul 20, 08:40 UTC15h 0m
2026-07-19 ACA42 YYZ → DEL Jul 19, 00:10 UTCJul 19, 14:00 UTC13h 50m
2026-07-18 ACA881 ZRH → YYZ Jul 18, 11:40 UTCJul 18, 19:40 UTC8h 0m
2026-07-18 ACA881 ZRH → YYZ Jul 18, 11:38 UTCJul 18, 19:29 UTC7h 51m
2026-07-18 ACA880 YYZ → ZRH Jul 18, 00:45 UTCJul 18, 02:29 UTC1h 45m
2026-07-18 ACA880 YYZ → ZRH Jul 18, 00:44 UTCJul 18, 08:10 UTC7h 26m
2026-07-17 ACA881 ZRH → YYZ Jul 17, 11:30 UTCJul 17, 19:25 UTC7h 55m
2026-07-17 ACA880 YYZ → ZRH Jul 17, 00:25 UTCJul 17, 07:44 UTC7h 20m
2026-07-15 ACA43 - Jul 15, 18:15 UTCJul 16, 08:55 UTC14h 40m
2026-07-15 ACA42 YYZ → DEL Jul 15, 00:25 UTCJul 15, 14:20 UTC13h 55m
2026-07-14 ACA881 ZRH → YYZ Jul 14, 12:05 UTCJul 14, 20:00 UTC7h 55m
2026-07-14 ACA880 YYZ → ZRH Jul 14, 00:25 UTCJul 14, 07:55 UTC7h 30m
2026-07-13 ACA887 VIE → YYZ Jul 13, 08:50 UTCJul 13, 17:15 UTC8h 25m
2026-07-12 ACA886 YYZ → VIE Jul 12, 22:35 UTCJul 13, 06:30 UTC7h 55m
2026-07-12 ACA886 YYZ → VIE Jul 12, 22:32 UTCJul 13, 06:17 UTC7h 45m
2026-07-12 ACA887 VIE → YYZ Jul 12, 08:45 UTCJul 12, 17:10 UTC8h 25m
2026-07-11 ACA886 YYZ → VIE Jul 11, 22:20 UTCJul 12, 06:05 UTC7h 45m
2026-07-11 ACA886 YYZ → VIE Jul 11, 22:19 UTCJul 12, 06:05 UTC7h 46m
2026-07-11 ACA887 VIE → YYZ Jul 11, 08:45 UTCJul 11, 17:15 UTC8h 30m
2026-07-11 ACA887 VIE → YYZ Jul 11, 08:43 UTCJul 11, 17:09 UTC8h 26m
2026-07-10 ACA886 YYZ → VIE Jul 10, 22:15 UTCJul 11, 05:50 UTC7h 35m
2026-07-10 ACA891 - Jul 10, 10:50 UTCJul 10, 19:45 UTC8h 55m
2026-07-10 ACA891 FCO → YYZ Jul 10, 10:46 UTCJul 10, 19:29 UTC8h 43m
2026-07-10 ACA890 - Jul 10, 00:35 UTCJul 10, 08:25 UTC7h 50m
2026-07-08 ACA43 DEL → YYZ Jul 8, 17:27 UTCJul 9, 08:41 UTC15h 14m
2026-07-08 ACA43 - Jul 8, 17:30 UTCJul 8, 18:15 UTC45m
2026-07-08 ACA42 - Jul 8, 00:05 UTCJul 8, 14:00 UTC13h 55m
2026-07-07 ACA821 - Jul 7, 18:15 UTCJul 7, 19:30 UTC1h 15m
2026-07-07 ACA821 - Jul 7, 11:55 UTCJul 7, 18:10 UTC6h 15m
2026-07-07 ACA820 YYZ → BCN Jul 7, 00:10 UTCJul 7, 07:15 UTC7h 5m
2026-07-06 ACA34 YVR → YYZ Jul 6, 16:15 UTCJul 6, 20:05 UTC3h 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-FNND page for operator, model, and routing details .

Mode-S C023AA frequently asked

What is Mode-S code C023AA?
C023AA is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-FNND.
Where is Mode-S C023AA registered?
Mode-S code C023AA is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C023AA broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C023AA, octal 60021652, decimal 12,592,042.
What flights does C023AA operate?
Mode-S C023AA has broadcast 20 distinct callsigns, including ACA34, ACA33, ACA42, ACA43, ACA886.