Apparatus

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sensors Mode-S transponder

C0171A

ICAO 24-bit transponder address · allocated to Canada

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

Hex
C0171A
Octal
60013432
Decimal
12,588,826
Country
CA
Tail
C-FITL
Type
B77W
Broadcasting now · callsign ACA922 · 19,225 ft
Flights observed
145
Distinct callsigns
20
Country
CA
Last broadcast
3h ago

Current position

C0171A is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address C0171A 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
ACA891 Air Canada 17 2026-04-26
ACA821 Air Canada 13 2026-05-23
ACA890 Air Canada 12 2026-04-26
ACA820 Air Canada 10 2026-05-22
ACA854 Air Canada 9 2026-05-26
ACA853 Air Canada 9 2026-05-27
ACA2 Air Canada 8 2026-05-28
ACA1 Air Canada 8 2026-05-28
ACA810 Air Canada 7 2026-05-21
ACA897 Air Canada 6 2026-05-26
ACA896 Air Canada 5 2026-05-25
ACA872 Air Canada 4 2026-05-19
ACA811 Air Canada 4 2026-05-21
ACA185 Air Canada 4 2026-05-20
ACA873 Air Canada 3 2026-05-19
ACA4 Air Canada 3 2026-04-30
ACA3 Air Canada 3 2026-04-29
ACA110 Air Canada 3 2026-04-17
ACA920 Air Canada 2 2026-05-29
ACA855 Air Canada 2 2026-05-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 ACA923 MCO → YYZ May 29, 13:05 UTCMay 29, 22:40 UTC9h 35m
2026-05-29 ACA920 YYZ → PBI May 29, 01:38 UTCMay 29, 10:47 UTC9h 9m
2026-05-29 ACA920 YYZ → PBI May 29, 01:40 UTCMay 29, 10:55 UTC9h 15m
2026-05-28 ACA2 HND → YYZ May 28, 09:32 UTCMay 28, 20:57 UTC11h 25m
2026-05-28 ACA2 HND → YYZ May 28, 09:35 UTCMay 28, 10:10 UTC35m
2026-05-28 ACA1 YYZ → HND May 28, 06:45 UTCMay 28, 06:55 UTC10m
2026-05-27 ACA1 YYZ → HND May 27, 17:34 UTCMay 28, 06:28 UTC12h 54m
2026-05-27 ACA1 YYZ → HND May 27, 17:35 UTCMay 28, 06:55 UTC13h 20m
2026-05-27 ACA853 LHR → YYZ May 27, 08:20 UTCMay 27, 15:25 UTC7h 5m
2026-05-26 ACA854 YYZ → LHR May 26, 22:50 UTCMay 26, 23:49 UTC1h 0m
2026-05-26 ACA854 YYZ → LHR May 26, 22:49 UTCMay 27, 05:14 UTC6h 25m
2026-05-26 ACA897 ATH → YYZ May 26, 18:50 UTCMay 26, 20:20 UTC1h 30m
2026-05-26 ACA897 ATH → YYZ May 26, 10:46 UTCMay 26, 20:05 UTC9h 19m
2026-05-26 ACA897 ATH → YYZ May 26, 10:50 UTCMay 26, 18:40 UTC7h 50m
2026-05-25 ACA896 YYZ → ATH May 25, 22:59 UTCMay 26, 07:53 UTC8h 54m
2026-05-25 ACA896 YYZ → ATH May 25, 23:00 UTCMay 26, 00:29 UTC1h 30m
2026-05-24 ACA897 ATH → YYZ May 24, 11:15 UTCMay 24, 21:09 UTC9h 54m
2026-05-24 ACA897 ATH → YYZ May 24, 11:15 UTCMay 24, 21:15 UTC10h 0m
2026-05-23 ACA896 YYZ → ATH May 23, 23:20 UTCMay 24, 08:20 UTC9h 0m
2026-05-23 ACA821 BCN → YYZ May 23, 11:55 UTCMay 23, 20:00 UTC8h 6m
2026-05-22 ACA820 YYZ → BCN May 22, 23:45 UTCMay 23, 06:25 UTC6h 39m
2026-05-22 ACA897 ATH → YYZ May 22, 11:05 UTCMay 22, 20:40 UTC9h 35m
2026-05-22 ACA896 YYZ → ATH May 22, 00:09 UTCMay 22, 08:40 UTC8h 31m
2026-05-22 ACA896 YYZ → ATH May 22, 00:10 UTCMay 22, 08:45 UTC8h 35m
2026-05-21 ACA811 LIS → YYZ May 21, 12:40 UTCMay 21, 20:05 UTC7h 25m
2026-05-21 ACA810 YYZ → LIS May 21, 03:55 UTCMay 21, 10:00 UTC6h 5m
2026-05-20 ACA114 YVR → YYZ May 20, 20:23 UTCMay 21, 00:03 UTC3h 40m
2026-05-20 ACA114 YVR → YYZ May 20, 20:25 UTCMay 21, 00:10 UTC3h 45m
2026-05-20 ACA185 YYZ → YVR May 20, 12:30 UTCMay 20, 16:55 UTC4h 25m
2026-05-19 ACA873 CDG → YYZ May 19, 11:10 UTCMay 19, 18:45 UTC7h 35m
2026-05-19 ACA872 YYZ → CDG May 19, 00:55 UTCMay 19, 07:45 UTC6h 50m
2026-05-18 ACA811 LIS → YYZ May 18, 12:30 UTCMay 18, 19:55 UTC7h 24m
2026-05-18 ACA810 YYZ → LIS May 18, 03:27 UTCMay 18, 09:32 UTC6h 5m
2026-05-18 ACA810 YYZ → LIS May 18, 03:30 UTCMay 18, 09:45 UTC6h 15m
2026-05-16 ACA853 LHR → YYZ May 16, 08:16 UTCMay 16, 15:25 UTC7h 10m
2026-05-16 ACA854 YYZ → LHR May 16, 00:00 UTCMay 16, 06:20 UTC6h 21m
2026-05-15 ACA821 BCN → YYZ May 15, 12:00 UTCMay 15, 20:15 UTC8h 14m
2026-05-14 ACA820 YYZ → BCN May 14, 23:45 UTCMay 15, 06:45 UTC7h 0m
2026-05-14 ACA2 HND → YYZ May 14, 09:35 UTCMay 14, 21:25 UTC11h 50m
2026-05-13 ACA1 YYZ → HND May 13, 17:20 UTCMay 14, 06:20 UTC13h 0m
2026-05-13 ACA853 LHR → YYZ May 13, 07:35 UTCMay 13, 14:45 UTC7h 10m
2026-05-12 ACA854 YYZ → LHR May 12, 22:55 UTCMay 13, 05:35 UTC6h 40m
2026-05-12 ACA811 LIS → YYZ May 12, 12:50 UTCMay 12, 19:35 UTC6h 45m
2026-05-12 ACA810 YYZ → LIS May 12, 03:10 UTCMay 12, 09:50 UTC6h 40m
2026-05-12 ACA810 YYZ → LIS May 12, 03:07 UTCMay 12, 09:40 UTC6h 33m
2026-05-11 ACA486 YYZ → YUL May 11, 20:05 UTCMay 11, 20:55 UTC50m
2026-05-10 ACA821 BCN → YYZ May 10, 11:40 UTCMay 10, 19:50 UTC8h 10m
2026-05-10 ACA821 BCN → YYZ May 10, 11:38 UTCMay 10, 19:40 UTC8h 2m
2026-05-10 ACA820 YYZ → BCN May 10, 00:54 UTCMay 10, 08:06 UTC7h 12m
2026-05-10 ACA820 YYZ → BCN May 10, 00:55 UTCMay 10, 02:30 UTC1h 35m

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

Mode-S C0171A frequently asked

What is Mode-S code C0171A?
C0171A is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-FITL.
Where is Mode-S C0171A registered?
Mode-S code C0171A is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C0171A broadcasting right now?
Yes. Mode-S C0171A is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C0171A, octal 60013432, decimal 12,588,826.
What flights does C0171A operate?
Mode-S C0171A has broadcast 20 distinct callsigns, including ACA891, ACA821, ACA890, ACA820, ACA854.