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sensors Mode-S transponder

C0173A

ICAO 24-bit transponder address · allocated to Canada

Currently assigned to C-FIUR · BOEING 777-300ER · operated by Air Canada

Hex
C0173A
Octal
60013472
Decimal
12,588,858
Country
CA
Tail
C-FIUR
Type
B77W
Broadcasting now · callsign ACA896 · 36,350 ft
Flights observed
198
Distinct callsigns
20
Country
CA
Last broadcast
1h ago

Current position

C0173A is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address C0173A 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
ACA820 - 21 2026-07-13
ACA821 - 20 2026-07-13
ACA890 - 13 2026-07-09
ACA2 - 13 2026-07-12
ACA891 - 11 2026-07-09
ACA1 - 11 2026-07-11
ACA859 - 10 2026-06-28
ACA858 - 10 2026-06-28
ACA854 - 10 2026-07-10
ACA853 - 9 2026-07-11
ACA855 - 7 2026-07-10
ACA852 - 7 2026-07-10
ACA185 Air Canada 7 2026-06-27
ACA114 - 7 2026-06-27
ACA810 - 6 2026-06-29
ACA896 - 5 2026-07-13
ACA873 - 5 2026-07-03
ACA872 - 5 2026-07-03
ACA811 - 5 2026-06-29
ACA897 - 4 2026-07-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 ACA896 - Jul 13, 23:00 UTCJul 14, 04:30 UTC5h 30m
2026-07-13 ACA821 BCN → YYZ Jul 13, 11:40 UTCJul 13, 19:30 UTC7h 50m
2026-07-13 ACA820 YYZ → BCN Jul 13, 00:01 UTCJul 13, 07:30 UTC7h 30m
2026-07-12 ACA2 HND → YYZ Jul 12, 09:35 UTCJul 12, 21:00 UTC11h 25m
2026-07-11 ACA1 - Jul 11, 17:35 UTCJul 11, 18:30 UTC55m
2026-07-11 ACA1 YYZ → HND Jul 11, 17:35 UTCJul 12, 05:55 UTC12h 20m
2026-07-11 ACA853 LHR → YYZ Jul 11, 07:50 UTCJul 11, 14:45 UTC6h 55m
2026-07-11 ACA853 LHR → YYZ Jul 11, 07:49 UTCJul 11, 14:48 UTC6h 59m
2026-07-10 ACA854 YYZ → LHR Jul 10, 23:30 UTCJul 11, 05:45 UTC6h 15m
2026-07-10 ACA854 YYZ → LHR Jul 10, 23:31 UTCJul 11, 05:40 UTC6h 9m
2026-07-10 ACA855 LHR → YYZ Jul 10, 13:24 UTCJul 10, 20:32 UTC7h 8m
2026-07-10 ACA855 - Jul 10, 13:25 UTCJul 10, 14:30 UTC1h 5m
2026-07-10 ACA852 YYZ → LHR Jul 10, 04:20 UTCJul 10, 10:40 UTC6h 20m
2026-07-09 ACA891 - Jul 9, 11:40 UTCJul 9, 20:25 UTC8h 45m
2026-07-09 ACA890 - Jul 9, 00:30 UTCJul 9, 02:10 UTC1h 40m
2026-07-09 ACA890 YYZ → FCO Jul 9, 00:29 UTCJul 9, 08:21 UTC7h 52m
2026-07-08 ACA821 BCN → YYZ Jul 8, 12:00 UTCJul 8, 19:50 UTC7h 50m
2026-07-08 ACA821 BCN → YYZ Jul 8, 11:55 UTCJul 8, 19:38 UTC7h 43m
2026-07-07 ACA820 YYZ → BCN Jul 7, 23:50 UTCJul 8, 07:10 UTC7h 20m
2026-07-07 ACA897 ATH → YYZ Jul 7, 10:45 UTCJul 7, 20:10 UTC9h 25m
2026-07-06 ACA896 YYZ → ATH Jul 6, 23:15 UTCJul 7, 08:00 UTC8h 45m
2026-07-06 ACA891 - Jul 6, 11:05 UTCJul 6, 19:55 UTC8h 50m
2026-07-06 ACA890 - Jul 6, 00:20 UTCJul 6, 08:30 UTC8h 10m
2026-07-05 ACA2 HND → YYZ Jul 5, 09:35 UTCJul 5, 21:00 UTC11h 25m
2026-07-04 ACA1 - Jul 4, 17:35 UTCJul 5, 05:30 UTC11h 55m
2026-07-04 ACA853 - Jul 4, 07:45 UTCJul 4, 15:10 UTC7h 25m
2026-07-03 ACA854 YYZ → LHR Jul 3, 23:00 UTCJul 4, 05:25 UTC6h 25m
2026-07-03 ACA854 YYZ → LHR Jul 3, 23:00 UTCJul 4, 05:03 UTC6h 3m
2026-07-03 ACA873 - Jul 3, 17:40 UTCJul 3, 18:50 UTC1h 10m
2026-07-03 ACA873 - Jul 3, 11:20 UTCJul 3, 17:10 UTC5h 50m
2026-07-03 ACA872 - Jul 3, 02:55 UTCJul 3, 07:55 UTC5h 0m
2026-07-03 ACA872 YYZ → CDG Jul 3, 01:16 UTCJul 3, 07:47 UTC6h 31m
2026-07-03 ACA872 - Jul 3, 01:20 UTCJul 3, 02:50 UTC1h 30m
2026-07-02 ACA891 - Jul 2, 11:00 UTCJul 2, 20:00 UTC9h 0m
2026-07-02 ACA890 - Jul 2, 08:15 UTCJul 2, 08:25 UTC10m
2026-07-02 ACA890 - Jul 2, 00:15 UTCJul 2, 02:15 UTC2h 0m
2026-07-02 ACA890 YYZ → FCO Jul 2, 00:15 UTCJul 2, 08:00 UTC7h 45m
2026-07-01 ACA2 HND → YYZ Jul 1, 09:36 UTCJul 1, 21:13 UTC11h 37m
2026-07-01 ACA2 HND → YYZ Jul 1, 09:40 UTCJul 1, 21:25 UTC11h 45m
2026-06-30 ACA1 YYZ → HND Jun 30, 17:45 UTCJul 1, 06:10 UTC12h 25m
2026-06-30 ACA853 - Jun 30, 07:45 UTCJun 30, 14:45 UTC7h 0m
2026-06-29 ACA854 YYZ → LHR Jun 29, 23:05 UTCJun 30, 05:25 UTC6h 21m
2026-06-29 ACA811 LIS → YYZ Jun 29, 12:39 UTCJun 29, 20:04 UTC7h 25m
2026-06-29 ACA810 - Jun 29, 03:29 UTCJun 29, 09:44 UTC6h 15m
2026-06-28 ACA859 - Jun 28, 17:10 UTCJun 29, 00:05 UTC6h 55m
2026-06-28 ACA859 LHR → YYZ Jun 28, 17:08 UTCJun 28, 23:51 UTC6h 43m
2026-06-28 ACA858 YYZ → LHR Jun 28, 04:46 UTCJun 28, 10:58 UTC6h 12m
2026-06-28 ACA858 - Jun 28, 04:50 UTCJun 28, 11:04 UTC6h 15m
2026-06-27 ACA114 - Jun 27, 21:29 UTCJun 28, 01:29 UTC4h 0m
2026-06-27 ACA185 YYZ → YVR Jun 27, 12:19 UTCJun 27, 16:44 UTC4h 25m

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

Mode-S C0173A frequently asked

What is Mode-S code C0173A?
C0173A is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-FIUR.
Where is Mode-S C0173A registered?
Mode-S code C0173A is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C0173A broadcasting right now?
Yes. Mode-S C0173A is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C0173A, octal 60013472, decimal 12,588,858.
What flights does C0173A operate?
Mode-S C0173A has broadcast 20 distinct callsigns, including ACA820, ACA821, ACA890, ACA2, ACA891.