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sensors Mode-S transponder

C0055D

ICAO 24-bit transponder address · allocated to Canada

Currently assigned to C-FCAU · CESSNA 172 Skyhawk · operated by Aquila Aviation Ltd.

Hex
C0055D
Octal
60002535
Decimal
12,584,285
Country
CA
Tail
C-FCAU
Type
C172
Broadcasting now · callsign CFCAU · 550 ft
Flights observed
238
Distinct callsigns
1
Country
CA
Last broadcast
1h ago

Current position

C0055D is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address C0055D 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 1 distinct

Callsign Airline Flights Last seen
CFCAU - 238 2026-06-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 CFCAU - Jun 2, 22:30 UTCJun 2, 23:10 UTC40m
2026-06-02 CFCAU - Jun 2, 20:20 UTCJun 2, 21:05 UTC45m
2026-06-02 CFCAU YXX → YXX Jun 2, 17:40 UTCJun 2, 18:20 UTC40m
2026-06-02 CFCAU - Jun 2, 15:55 UTCJun 2, 16:40 UTC45m
2026-06-02 CFCAU - Jun 2, 02:05 UTCJun 2, 02:55 UTC50m
2026-06-02 CFCAU - Jun 2, 00:05 UTCJun 2, 00:55 UTC50m
2026-06-01 CFCAU - Jun 1, 22:20 UTCJun 1, 22:40 UTC20m
2026-06-01 CFCAU - Jun 1, 20:00 UTCJun 1, 20:45 UTC45m
2026-06-01 CFCAU YXX → YXX Jun 1, 17:55 UTCJun 1, 19:15 UTC1h 20m
2026-05-31 CFCAU - May 31, 00:00 UTCMay 31, 00:55 UTC55m
2026-05-30 CFCAU YXX → YXX May 30, 21:40 UTCMay 30, 22:40 UTC1h 0m
2026-05-30 CFCAU - May 30, 20:25 UTCMay 30, 20:50 UTC25m
2026-05-30 CFCAU - May 30, 18:10 UTCMay 30, 19:05 UTC55m
2026-05-30 CFCAU YXX → YXX May 30, 15:55 UTCMay 30, 16:40 UTC45m
2026-05-30 CFCAU - May 30, 01:50 UTCMay 30, 03:45 UTC1h 55m
2026-05-29 CFCAU - May 29, 23:50 UTCMay 30, 00:30 UTC40m
2026-05-29 CFCAU - May 29, 22:05 UTCMay 29, 22:50 UTC45m
2026-05-29 CFCAU YXX → YXX May 29, 20:15 UTCMay 29, 21:05 UTC50m
2026-05-29 CFCAU YXX → YXX May 29, 18:40 UTCMay 29, 18:55 UTC15m
2026-05-29 CFCAU YXX → YXX May 29, 15:40 UTCMay 29, 16:55 UTC1h 15m
2026-05-29 CFCAU YXX → YXX May 29, 02:00 UTCMay 29, 03:05 UTC1h 5m
2026-05-29 CFCAU - May 29, 00:05 UTCMay 29, 01:10 UTC1h 5m
2026-05-28 CFCAU - May 28, 22:45 UTCMay 28, 22:55 UTC10m
2026-05-28 CFCAU - May 28, 21:55 UTCMay 28, 22:05 UTC10m
2026-05-28 CFCAU - May 28, 20:10 UTCMay 28, 20:40 UTC30m
2026-05-28 CFCAU - May 28, 19:00 UTCMay 28, 19:15 UTC15m
2026-05-28 CFCAU - May 28, 18:10 UTCMay 28, 18:25 UTC15m
2026-05-28 CFCAU - May 28, 16:05 UTCMay 28, 17:00 UTC55m
2026-05-28 CFCAU - May 28, 01:55 UTCMay 28, 02:50 UTC55m
2026-05-27 CFCAU YXX → YXX May 27, 23:55 UTCMay 28, 00:55 UTC1h 0m
2026-05-27 CFCAU YXX → YXX May 27, 21:55 UTCMay 27, 23:05 UTC1h 10m
2026-05-27 CFCAU - May 27, 20:45 UTCMay 27, 21:05 UTC20m
2026-05-27 CFCAU - May 27, 19:50 UTCMay 27, 20:05 UTC15m
2026-05-27 CFCAU - May 27, 18:15 UTCMay 27, 19:00 UTC45m
2026-05-27 CFCAU - May 27, 16:05 UTCMay 27, 17:00 UTC55m
2026-05-27 CFCAU YXX → YXX May 27, 00:39 UTCMay 27, 01:14 UTC35m
2026-05-26 CFCAU - May 26, 22:25 UTCMay 26, 22:54 UTC30m
2026-05-26 CFCAU - May 26, 02:10 UTCMay 26, 03:00 UTC50m
2026-05-25 CFCAU YXX → YXX May 25, 23:35 UTCMay 26, 00:35 UTC1h 0m
2026-05-25 CFCAU - May 25, 22:00 UTCMay 25, 22:49 UTC50m
2026-05-25 CFCAU - May 25, 19:44 UTCMay 25, 20:30 UTC45m
2026-05-25 CFCAU YXX → YXX May 25, 16:10 UTCMay 25, 16:50 UTC40m
2026-05-24 CFCAU YXX → YXX May 24, 02:05 UTCMay 24, 02:50 UTC45m
2026-05-23 CFCAU - May 23, 23:45 UTCMay 24, 00:25 UTC40m
2026-05-23 CFCAU YXX → YXX May 23, 21:30 UTCMay 23, 21:55 UTC25m
2026-05-23 CFCAU - May 23, 19:50 UTCMay 23, 20:40 UTC50m
2026-05-23 CFCAU YXX → YXX May 23, 17:35 UTCMay 23, 18:20 UTC46m
2026-05-23 CFCAU - May 23, 16:40 UTCMay 23, 16:50 UTC10m
2026-05-23 CFCAU - May 23, 16:00 UTCMay 23, 16:10 UTC10m
2026-05-23 CFCAU YXX → YXX May 23, 01:30 UTCMay 23, 02:30 UTC1h 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-FCAU page for operator, model, and routing details .

Mode-S C0055D frequently asked

What is Mode-S code C0055D?
C0055D is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-FCAU.
Where is Mode-S C0055D registered?
Mode-S code C0055D is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C0055D broadcasting right now?
Yes. Mode-S C0055D is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C0055D, octal 60002535, decimal 12,584,285.
What flights does C0055D operate?
Mode-S C0055D has broadcast 1 distinct callsign, including CFCAU.