Apparatus

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sensors Mode-S transponder

C078AC

ICAO 24-bit transponder address · allocated to Canada

Currently assigned to C-GTSD · AIRBUS A-330-300 · operated by Air Transat A T Inc.

Hex
C078AC
Octal
60074254
Decimal
12,613,804
Country
CA
Tail
C-GTSD
Type
A333
Broadcasting now · callsign TSC308 · 39,000 ft
Flights observed
197
Distinct callsigns
20
Country
CA
Last broadcast
Jul 26, 21:50 UTC

Current position

C078AC is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address C078AC 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
TSC309 Air Transat 43 2026-07-26
TSC308 Air Transat 40 2026-07-26
TSC765 Air Transat 6 2026-07-24
TSC764 Air Transat 6 2026-07-24
TSC427 Air Transat 6 2026-04-19
TSC426 Air Transat 6 2026-04-18
TSC327 Air Transat 6 2026-04-28
TSC122 - 6 2026-07-11
TSC326 Air Transat 5 2026-04-28
TSC123 - 5 2026-07-11
TSC987 Air Transat 4 2026-04-29
TSC986 Air Transat 4 2026-04-20
TSC481 - 4 2026-07-06
TSC480 - 3 2026-07-06
TSC435 Air Transat 3 2026-06-12
TSC434 Air Transat 3 2026-06-12
TSC283 Air Transat 3 2026-07-23
TSC282 Air Transat 3 2026-07-23
TSC681 Air Transat 2 2026-06-09
TSC680 Air Transat 2 2026-06-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TSC309 FCO → YYZ Jul 26, 12:35 UTCJul 26, 21:40 UTC9h 5m
2026-07-26 TSC308 YYZ → FCO Jul 26, 02:20 UTCJul 26, 10:25 UTC8h 6m
2026-07-25 TSC309 FCO → YYZ Jul 25, 12:50 UTCJul 25, 21:35 UTC8h 45m
2026-07-25 TSC308 YYZ → FCO Jul 25, 02:10 UTCJul 25, 10:20 UTC8h 10m
2026-07-24 TSC765 OPO → YYZ Jul 24, 13:10 UTCJul 24, 20:20 UTC7h 10m
2026-07-24 TSC764 YYZ → OPO Jul 24, 04:15 UTCJul 24, 11:00 UTC6h 45m
2026-07-23 TSC283 LGW → YYZ Jul 23, 09:35 UTCJul 23, 17:00 UTC7h 25m
2026-07-23 TSC282 YYZ → LGW Jul 23, 00:15 UTCJul 23, 07:05 UTC6h 50m
2026-07-22 TSC309 FCO → YYZ Jul 22, 12:35 UTCJul 22, 21:45 UTC9h 10m
2026-07-22 TSC308 YYZ → FCO Jul 22, 01:55 UTCJul 22, 10:25 UTC8h 30m
2026-07-21 TSC309 FCO → YYZ Jul 21, 13:05 UTCJul 21, 22:15 UTC9h 10m
2026-07-21 TSC308 YYZ → FCO Jul 21, 02:55 UTCJul 21, 11:05 UTC8h 10m
2026-07-20 TSC207 MAN → YYZ Jul 20, 13:20 UTCJul 20, 20:15 UTC6h 55m
2026-07-20 TSC206 YYZ → MAN Jul 20, 06:15 UTCJul 20, 11:20 UTC5h 5m
2026-07-20 TSC206 YYZ → MAN Jul 20, 04:50 UTCJul 20, 06:10 UTC1h 20m
2026-07-19 TSC309 - Jul 19, 13:20 UTCJul 19, 22:20 UTC9h 0m
2026-07-19 TSC308 YYZ → FCO Jul 19, 02:10 UTCJul 19, 10:15 UTC8h 5m
2026-07-18 TSC309 - Jul 18, 13:05 UTCJul 18, 22:20 UTC9h 15m
2026-07-18 TSC308 YYZ → FCO Jul 18, 02:09 UTCJul 18, 10:50 UTC8h 41m
2026-07-17 TSC309 FCO → YYZ Jul 17, 12:45 UTCJul 17, 21:44 UTC9h 0m
2026-07-17 TSC308 - Jul 17, 02:15 UTCJul 17, 10:30 UTC8h 15m
2026-07-16 TSC309 - Jul 16, 13:34 UTCJul 16, 22:49 UTC9h 15m
2026-07-16 TSC308 YYZ → FCO Jul 16, 02:15 UTCJul 16, 10:29 UTC8h 15m
2026-07-15 TSC309 - Jul 15, 12:50 UTCJul 15, 21:55 UTC9h 5m
2026-07-15 TSC308 YYZ → FCO Jul 15, 02:20 UTCJul 15, 10:25 UTC8h 5m
2026-07-14 TSC309 - Jul 14, 12:40 UTCJul 14, 21:40 UTC9h 0m
2026-07-14 TSC308 YYZ → FCO Jul 14, 01:55 UTCJul 14, 10:20 UTC8h 25m
2026-07-13 TSC309 - Jul 13, 15:25 UTCJul 13, 22:15 UTC6h 50m
2026-07-13 TSC309 - Jul 13, 13:15 UTCJul 13, 15:20 UTC2h 5m
2026-07-13 TSC308 - Jul 13, 01:55 UTCJul 13, 10:20 UTC8h 25m
2026-07-12 TSC309 - Jul 12, 12:35 UTCJul 12, 21:25 UTC8h 50m
2026-07-12 TSC308 - Jul 12, 02:10 UTCJul 12, 10:35 UTC8h 25m
2026-07-11 TSC123 LGW → YYZ Jul 11, 12:10 UTCJul 11, 19:35 UTC7h 25m
2026-07-11 TSC122 - Jul 11, 08:30 UTCJul 11, 10:00 UTC1h 30m
2026-07-11 TSC122 - Jul 11, 03:20 UTCJul 11, 05:01 UTC1h 40m
2026-07-10 TSC765 OPO → YYZ Jul 10, 13:05 UTCJul 10, 20:40 UTC7h 35m
2026-07-10 TSC764 YYZ → OPO Jul 10, 04:15 UTCJul 10, 10:40 UTC6h 25m
2026-07-09 TSC283 LGW → YYZ Jul 9, 09:35 UTCJul 9, 17:15 UTC7h 40m
2026-07-09 TSC282 YYZ → LGW Jul 9, 00:15 UTCJul 9, 07:05 UTC6h 50m
2026-07-08 TSC309 - Jul 8, 12:50 UTCJul 8, 21:50 UTC9h 0m
2026-07-08 TSC308 YYZ → FCO Jul 8, 02:25 UTCJul 8, 10:55 UTC8h 30m
2026-07-07 TSC765 OPO → YYZ Jul 7, 13:30 UTCJul 7, 20:35 UTC7h 5m
2026-07-07 TSC764 - Jul 7, 04:50 UTCJul 7, 11:35 UTC6h 45m
2026-07-06 TSC481 LIS → YYZ Jul 6, 12:00 UTCJul 6, 19:35 UTC7h 35m
2026-07-06 TSC480 YYZ → LIS Jul 6, 02:00 UTCJul 6, 08:30 UTC6h 30m
2026-07-05 TSC309 - Jul 5, 12:55 UTCJul 5, 22:15 UTC9h 20m
2026-07-05 TSC308 YYZ → FCO Jul 5, 02:00 UTCJul 5, 09:45 UTC7h 45m
2026-07-04 TSC309 - Jul 4, 20:30 UTCJul 4, 22:05 UTC1h 35m
2026-07-04 TSC309 - Jul 4, 12:50 UTCJul 4, 20:20 UTC7h 30m
2026-07-04 TSC308 YYZ → FCO Jul 4, 02:15 UTCJul 4, 10:15 UTC8h 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-GTSD page for operator, model, and routing details .

Mode-S C078AC frequently asked

What is Mode-S code C078AC?
C078AC is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-GTSD.
Where is Mode-S C078AC registered?
Mode-S code C078AC is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C078AC broadcasting right now?
Yes. Mode-S C078AC is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C078AC, octal 60074254, decimal 12,613,804.
What flights does C078AC operate?
Mode-S C078AC has broadcast 20 distinct callsigns, including TSC309, TSC308, TSC765, TSC764, TSC427.