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
Broadcasting now · callsign ACA34 · 31,000 ft
Flights observed
125
Distinct callsigns
14
Country
CA
Last broadcast
40m ago

Current position

C023AA is currently broadcasting. Map zoomed to live position.

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 14 distinct

Callsign Airline Flights Last seen
ACA34 Air Canada 43 2026-05-29
ACA33 Air Canada 43 2026-05-29
ACA49 Air Canada 8 2026-05-08
ACA48 Air Canada 8 2026-05-22
ACA42 Air Canada 8 2026-05-23
ACA43 Air Canada 6 2026-05-23
ACA2410 Air Canada 2 2026-04-26
ACA987 Air Canada 1 2026-04-22
ACA855 Air Canada 1 2026-04-27
ACA852 Air Canada 1 2026-04-27
ACA3XC Air Canada 1 2026-04-29
ACA2385 Air Canada 1 2026-04-26
ACA146 Air Canada 1 2026-04-24
ACA139 Air Canada 1 2026-04-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 ACA34 SYD → YVR May 29, 23:50 UTCMay 30, 00:30 UTC40m
2026-05-29 ACA33 YVR → SYD May 29, 21:20 UTCMay 29, 21:35 UTC15m
2026-05-29 ACA33 YVR → SYD May 29, 06:31 UTCMay 29, 21:02 UTC14h 31m
2026-05-29 ACA33 YVR → SYD May 29, 06:35 UTCMay 29, 07:00 UTC25m
2026-05-28 ACA33 YVR → SYD May 28, 23:20 UTCMay 29, 03:30 UTC4h 10m
2026-05-28 ACA34 SYD → YVR May 28, 16:30 UTCMay 28, 20:30 UTC4h 0m
2026-05-27 ACA34 SYD → YVR May 27, 23:35 UTCMay 28, 13:45 UTC14h 10m
2026-05-27 ACA33 YVR → SYD May 27, 06:20 UTCMay 27, 20:50 UTC14h 30m
2026-05-26 ACA33 YVR → SYD May 26, 23:19 UTCMay 27, 03:45 UTC4h 25m
2026-05-26 ACA34 SYD → YVR May 26, 16:30 UTCMay 26, 20:24 UTC3h 55m
2026-05-26 ACA34 SYD → YVR May 26, 00:39 UTCMay 26, 14:05 UTC13h 25m
2026-05-25 ACA33 YVR → SYD May 25, 06:25 UTCMay 25, 21:04 UTC14h 40m
2026-05-25 ACA33 YVR → SYD May 25, 01:55 UTCMay 25, 04:30 UTC2h 35m
2026-05-23 ACA43 DEL → YYZ May 23, 17:45 UTCMay 24, 09:10 UTC15h 25m
2026-05-23 ACA42 YYZ → DEL May 23, 00:35 UTCMay 23, 14:10 UTC13h 35m
2026-05-22 ACA48 YYZ → DEL May 22, 02:05 UTCMay 22, 07:15 UTC5h 10m
2026-05-21 ACA34 SYD → YVR May 21, 16:15 UTCMay 21, 20:05 UTC3h 50m
2026-05-21 ACA34 SYD → YVR May 21, 00:05 UTCMay 21, 14:00 UTC13h 55m
2026-05-20 ACA33 YVR → SYD May 20, 06:15 UTCMay 20, 21:00 UTC14h 45m
2026-05-19 ACA33 YVR → SYD May 19, 23:15 UTCMay 20, 03:40 UTC4h 25m
2026-05-19 ACA33 YVR → SYD May 19, 23:10 UTCMay 20, 03:25 UTC4h 15m
2026-05-19 ACA34 SYD → YVR May 19, 16:10 UTCMay 19, 19:55 UTC3h 45m
2026-05-18 ACA34 SYD → YVR May 18, 23:40 UTCMay 19, 00:30 UTC50m
2026-05-18 ACA34 SYD → YVR May 18, 23:39 UTCMay 19, 13:25 UTC13h 46m
2026-05-18 ACA33 YVR → SYD May 18, 06:10 UTCMay 18, 21:15 UTC15h 4m
2026-05-17 ACA33 YVR → SYD May 17, 23:24 UTCMay 18, 03:40 UTC4h 16m
2026-05-17 ACA33 YVR → SYD May 17, 23:25 UTCMay 18, 03:55 UTC4h 30m
2026-05-17 ACA34 SYD → YVR May 17, 16:25 UTCMay 17, 20:10 UTC3h 45m
2026-05-16 ACA34 SYD → YVR May 16, 23:55 UTCMay 17, 13:35 UTC13h 40m
2026-05-16 ACA33 YVR → SYD May 16, 06:16 UTCMay 16, 20:55 UTC14h 40m
2026-05-15 ACA33 YVR → SYD May 15, 23:30 UTCMay 16, 03:55 UTC4h 25m
2026-05-15 ACA34 SYD → YVR May 15, 16:25 UTCMay 15, 20:15 UTC3h 50m
2026-05-15 ACA34 SYD → YVR May 15, 00:00 UTCMay 15, 13:40 UTC13h 40m
2026-05-14 ACA33 YVR → SYD May 14, 06:05 UTCMay 14, 21:55 UTC15h 50m
2026-05-13 ACA33 YVR → SYD May 13, 23:20 UTCMay 14, 03:40 UTC4h 20m
2026-05-13 ACA34 SYD → YVR May 13, 16:50 UTCMay 13, 20:40 UTC3h 50m
2026-05-13 ACA34 SYD → YVR May 13, 00:05 UTCMay 13, 00:40 UTC35m
2026-05-13 ACA34 SYD → YVR May 13, 00:05 UTCMay 13, 13:43 UTC13h 38m
2026-05-12 ACA33 YVR → SYD May 12, 06:40 UTCMay 12, 21:50 UTC15h 10m
2026-05-12 ACA33 YVR → SYD May 12, 02:45 UTCMay 12, 04:20 UTC1h 35m
2026-05-11 ACA34 SYD → YVR May 11, 16:24 UTCMay 11, 19:57 UTC3h 33m
2026-05-11 ACA34 SYD → YVR May 11, 16:25 UTCMay 11, 16:30 UTC5m
2026-05-11 ACA34 SYD → YVR May 11, 00:00 UTCMay 11, 14:00 UTC14h 0m
2026-05-10 ACA33 YVR → SYD May 10, 06:25 UTCMay 10, 21:35 UTC15h 10m
2026-05-09 ACA33 YVR → SYD May 9, 23:35 UTCMay 10, 03:55 UTC4h 20m
2026-05-08 ACA49 DEL → YYZ May 8, 20:00 UTCMay 9, 11:30 UTC15h 30m
2026-05-08 ACA48 YYZ → DEL May 8, 04:00 UTCMay 8, 17:35 UTC13h 35m
2026-05-06 ACA43 DEL → YYZ May 6, 17:50 UTCMay 7, 09:15 UTC15h 25m
2026-05-06 ACA43 DEL → YYZ May 6, 17:48 UTCMay 7, 09:02 UTC15h 14m
2026-05-06 ACA42 YYZ → DEL May 6, 00:40 UTCMay 6, 14:55 UTC14h 14m

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?
Yes. Mode-S C023AA is currently airborne.
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 14 distinct callsigns, including ACA34, ACA33, ACA49, ACA48, ACA42.