Apparatus

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sensors Mode-S transponder

C0173F

ICAO 24-bit transponder address · allocated to Canada

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

Hex
C0173F
Octal
60013477
Decimal
12,588,863
Country
CA
Tail
C-FIUW
Type
B77W
No current signal · last broadcast Jul 26, 18:15 UTC
Flights observed
240
Distinct callsigns
20
Country
CA
Last broadcast
Jul 26, 18:15 UTC

Last known position

Most recent position reported by Mode-S C0173F.

Country allocation

The ICAO 24-bit address C0173F 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
ACA858 - 23 2026-07-16
ACA859 - 21 2026-07-16
ACA861 - 18 2026-07-09
ACA860 - 17 2026-07-10
ACA185 - 12 2026-07-14
ACA114 - 10 2026-07-14
ACA854 Air Canada 8 2026-07-25
ACA853 Air Canada 8 2026-07-26
ACA821 Air Canada 8 2026-07-25
ACA811 - 8 2026-07-11
ACA810 - 8 2026-07-11
ACA1 Air Canada 8 2026-07-26
ACA820 Air Canada 7 2026-07-25
ACA2 Air Canada 6 2026-07-23
ACA921 - 5 2026-06-15
ACA897 - 5 2026-07-13
ACA886 - 5 2026-06-29
ACA873 Air Canada 5 2026-07-21
ACA872 - 5 2026-07-12
ACA855 - 4 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ACA1 YYZ → HND Jul 26, 17:40 UTCJul 26, 18:15 UTC35m
2026-07-26 ACA853 LHR → YYZ Jul 26, 07:55 UTCJul 26, 14:55 UTC7h 0m
2026-07-26 ACA853 LHR → YYZ Jul 26, 07:55 UTCJul 26, 09:15 UTC1h 20m
2026-07-25 ACA854 YYZ → LHR Jul 25, 23:00 UTCJul 26, 05:30 UTC6h 30m
2026-07-25 ACA821 BCN → YYZ Jul 25, 11:44 UTCJul 25, 19:14 UTC7h 30m
2026-07-25 ACA821 BCN → YYZ Jul 25, 11:44 UTCJul 25, 19:13 UTC7h 29m
2026-07-25 ACA820 YYZ → BCN Jul 25, 00:12 UTCJul 25, 07:22 UTC7h 10m
2026-07-25 ACA820 YYZ → BCN Jul 25, 00:15 UTCJul 25, 07:35 UTC7h 20m
2026-07-24 ACA821 BCN → YYZ Jul 24, 11:50 UTCJul 24, 19:50 UTC8h 0m
2026-07-24 ACA820 YYZ → BCN Jul 24, 00:35 UTCJul 24, 07:50 UTC7h 15m
2026-07-23 ACA2 HND → YYZ Jul 23, 09:40 UTCJul 23, 21:00 UTC11h 20m
2026-07-22 ACA1 YYZ → HND Jul 22, 17:33 UTCJul 23, 06:37 UTC13h 4m
2026-07-22 ACA1 YYZ → HND Jul 22, 17:35 UTCJul 23, 06:45 UTC13h 10m
2026-07-22 ACA853 - Jul 22, 10:20 UTCJul 22, 15:00 UTC4h 40m
2026-07-21 ACA854 YYZ → LHR Jul 21, 23:15 UTCJul 22, 05:25 UTC6h 10m
2026-07-21 ACA873 CDG → YYZ Jul 21, 11:25 UTCJul 21, 18:55 UTC7h 30m
2026-07-21 ACA870 YUL → CDG Jul 21, 02:55 UTCJul 21, 09:05 UTC6h 10m
2026-07-20 ACA7058 YYZ → YUL Jul 20, 23:55 UTCJul 21, 00:45 UTC50m
2026-07-20 ACA2 HND → YYZ Jul 20, 09:30 UTCJul 20, 21:10 UTC11h 40m
2026-07-19 ACA1 YYZ → HND Jul 19, 17:45 UTCJul 20, 06:30 UTC12h 45m
2026-07-19 ACA853 LHR → YYZ Jul 19, 07:50 UTCJul 19, 14:45 UTC6h 55m
2026-07-18 ACA854 YYZ → LHR Jul 18, 22:55 UTCJul 19, 05:25 UTC6h 30m
2026-07-18 ACA855 LHR → YYZ Jul 18, 12:00 UTCJul 18, 19:10 UTC7h 10m
2026-07-18 ACA852 YYZ → LHR Jul 18, 02:50 UTCJul 18, 09:35 UTC6h 45m
2026-07-16 ACA859 - Jul 16, 17:40 UTCJul 17, 00:35 UTC6h 55m
2026-07-16 ACA858 YYZ → LHR Jul 16, 06:10 UTCJul 16, 13:00 UTC6h 50m
2026-07-15 ACA859 - Jul 15, 17:15 UTCJul 16, 00:20 UTC7h 5m
2026-07-15 ACA858 YYZ → LHR Jul 15, 04:00 UTCJul 15, 10:45 UTC6h 45m
2026-07-14 ACA114 - Jul 14, 21:15 UTCJul 15, 00:55 UTC3h 39m
2026-07-14 ACA185 YYZ → YVR Jul 14, 12:20 UTCJul 14, 16:40 UTC4h 20m
2026-07-13 ACA897 - Jul 13, 21:15 UTCJul 13, 21:45 UTC30m
2026-07-13 ACA897 ATH → YYZ Jul 13, 12:24 UTCJul 13, 22:13 UTC9h 49m
2026-07-13 ACA897 - Jul 13, 12:25 UTCJul 13, 21:10 UTC8h 45m
2026-07-13 ACA896 YYZ → ATH Jul 13, 00:30 UTCJul 13, 09:45 UTC9h 15m
2026-07-12 ACA873 - Jul 12, 11:05 UTCJul 12, 18:20 UTC7h 15m
2026-07-12 ACA872 - Jul 12, 01:05 UTCJul 12, 08:01 UTC6h 55m
2026-07-11 ACA811 LIS → YYZ Jul 11, 12:40 UTCJul 11, 19:45 UTC7h 5m
2026-07-11 ACA810 YYZ → LIS Jul 11, 03:20 UTCJul 11, 09:45 UTC6h 25m
2026-07-10 ACA859 - Jul 10, 17:30 UTCJul 11, 00:35 UTC7h 5m
2026-07-10 ACA859 LHR → YYZ Jul 10, 17:27 UTCJul 11, 00:23 UTC6h 56m
2026-07-10 ACA860 - Jul 10, 11:55 UTCJul 10, 12:00 UTC5m
2026-07-10 ACA860 - Jul 10, 03:25 UTCJul 10, 03:40 UTC15m
2026-07-09 ACA861 - Jul 9, 14:40 UTCJul 9, 23:40 UTC9h 0m
2026-07-09 ACA858 YYZ → LHR Jul 9, 04:10 UTCJul 9, 10:50 UTC6h 40m
2026-07-08 ACA114 - Jul 8, 21:20 UTCJul 9, 01:10 UTC3h 50m
2026-07-08 ACA185 YYZ → YVR Jul 8, 12:15 UTCJul 8, 16:45 UTC4h 30m
2026-07-07 ACA859 - Jul 7, 17:15 UTCJul 7, 17:45 UTC30m
2026-07-07 ACA859 LHR → YYZ Jul 7, 17:15 UTCJul 8, 00:01 UTC6h 46m
2026-07-07 ACA858 YYZ → LHR Jul 7, 04:10 UTCJul 7, 10:50 UTC6h 40m
2026-07-06 ACA114 - Jul 6, 21:25 UTCJul 7, 01:25 UTC4h 0m

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

Mode-S C0173F frequently asked

What is Mode-S code C0173F?
C0173F is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-FIUW.
Where is Mode-S C0173F registered?
Mode-S code C0173F is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C0173F broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 18:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C0173F, octal 60013477, decimal 12,588,863.
What flights does C0173F operate?
Mode-S C0173F has broadcast 20 distinct callsigns, including ACA858, ACA859, ACA861, ACA860, ACA185.