Apparatus

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sensors Mode-S transponder

7C3C75

ICAO 24-bit transponder address · allocated to Australia

Hex
7C3C75
Octal
37036165
Decimal
8,141,941
Country
AU
No current signal · last broadcast 19h ago
Flights observed
97
Distinct callsigns
1
Country
AU
Last broadcast
19h ago

Last known position

Most recent position reported by Mode-S 7C3C75.

Country allocation

The ICAO 24-bit address 7C3C75 falls within the block assigned to Australia (AU) by ICAO Annex 10, Volume III. Every aircraft registered in Australia 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
L77 - 97 2026-06-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 L77 JAD → JAD Jun 2, 01:25 UTCJun 2, 01:35 UTC10m
2026-05-30 L77 JAD → JAD May 30, 05:15 UTCMay 30, 05:50 UTC35m
2026-05-30 L77 JAD → JAD May 30, 03:05 UTCMay 30, 04:35 UTC1h 30m
2026-05-29 L77 JAD → JAD May 29, 23:45 UTCMay 30, 02:30 UTC2h 45m
2026-05-28 L77 JAD → JAD May 28, 07:50 UTCMay 28, 09:00 UTC1h 10m
2026-05-28 L77 JAD → JAD May 28, 05:10 UTCMay 28, 06:25 UTC1h 15m
2026-05-28 L77 JAD → JAD May 28, 02:20 UTCMay 28, 03:25 UTC1h 5m
2026-05-28 L77 JAD → JAD May 28, 00:45 UTCMay 28, 01:35 UTC50m
2026-05-26 L77 JAD → JAD May 26, 23:39 UTCMay 27, 03:45 UTC4h 5m
2026-05-26 L77 JAD → JAD May 26, 07:19 UTCMay 26, 08:45 UTC1h 25m
2026-05-26 L77 JAD → JAD May 26, 04:50 UTCMay 26, 06:39 UTC1h 50m
2026-05-26 L77 JAD → JAD May 26, 02:10 UTCMay 26, 03:00 UTC50m
2026-05-25 L77 JAD → JAD May 25, 23:45 UTCMay 26, 01:34 UTC1h 50m
2026-05-25 L77 JAD → JAD May 25, 04:45 UTCMay 25, 06:15 UTC1h 30m
2026-05-25 L77 JAD → JAD May 25, 02:40 UTCMay 25, 03:05 UTC25m
2026-05-23 L77 JAD → JAD May 23, 04:30 UTCMay 23, 06:05 UTC1h 35m
2026-05-23 L77 JAD → JAD May 23, 02:00 UTCMay 23, 03:20 UTC1h 20m
2026-05-22 L77 JAD → JAD May 22, 05:45 UTCMay 22, 07:05 UTC1h 20m
2026-05-22 L77 JAD → JAD May 22, 03:20 UTCMay 22, 04:45 UTC1h 25m
2026-05-22 L77 JAD → JAD May 22, 00:10 UTCMay 22, 02:10 UTC2h 0m
2026-05-21 L77 JAD → JAD May 21, 07:00 UTCMay 21, 07:55 UTC55m
2026-05-21 L77 JAD → JAD May 21, 04:35 UTCMay 21, 06:00 UTC1h 25m
2026-05-21 L77 JAD → JAD May 21, 00:05 UTCMay 21, 03:15 UTC3h 10m
2026-05-20 L77 JAD → JAD May 20, 07:25 UTCMay 20, 09:10 UTC1h 45m
2026-05-20 L77 JAD → JAD May 20, 04:20 UTCMay 20, 05:35 UTC1h 16m
2026-05-19 L77 JAD → JAD May 19, 23:55 UTCMay 20, 03:15 UTC3h 20m
2026-05-19 L77 JAD → JAD May 19, 07:25 UTCMay 19, 08:40 UTC1h 15m
2026-05-19 L77 JAD → JAD May 19, 00:10 UTCMay 19, 06:35 UTC6h 25m
2026-05-18 L77 JAD → JAD May 18, 04:45 UTCMay 18, 06:20 UTC1h 35m
2026-05-17 L77 JAD → JAD May 17, 07:15 UTCMay 17, 08:35 UTC1h 20m
2026-05-17 L77 JAD → JAD May 17, 05:20 UTCMay 17, 06:40 UTC1h 20m
2026-05-17 L77 JAD → JAD May 17, 02:25 UTCMay 17, 04:00 UTC1h 35m
2026-05-16 L77 JAD → JAD May 16, 02:25 UTCMay 16, 06:10 UTC3h 46m
2026-05-16 L77 JAD → JAD May 16, 01:05 UTCMay 16, 01:55 UTC50m
2026-05-15 L77 JAD → JAD May 15, 05:30 UTCMay 15, 06:20 UTC50m
2026-05-13 L77 JAD → JAD May 13, 23:55 UTCMay 14, 00:10 UTC15m
2026-05-10 L77 JAD → JAD May 10, 05:14 UTCMay 10, 06:04 UTC50m
2026-05-10 L77 JAD → JAD May 10, 00:15 UTCMay 10, 01:34 UTC1h 20m
2026-05-08 L77 JAD → JAD May 8, 05:14 UTCMay 8, 07:04 UTC1h 50m
2026-05-08 L77 JAD → JAD May 8, 02:19 UTCMay 8, 03:35 UTC1h 15m
2026-05-07 L77 JAD → JAD May 7, 04:40 UTCMay 7, 05:05 UTC25m
2026-05-07 L77 - May 7, 03:05 UTCMay 7, 03:40 UTC35m
2026-05-07 L77 - May 7, 02:40 UTCMay 7, 03:00 UTC20m
2026-05-06 L77 JAD → JAD May 6, 23:50 UTCMay 7, 01:15 UTC1h 25m
2026-05-06 L77 JAD → JAD May 6, 02:15 UTCMay 6, 03:45 UTC1h 30m
2026-05-05 L77 JAD → JAD May 5, 23:50 UTCMay 6, 01:40 UTC1h 50m
2026-05-05 L77 JAD → JAD May 5, 04:50 UTCMay 5, 05:50 UTC1h 0m
2026-05-05 L77 JAD → JAD May 5, 02:30 UTCMay 5, 03:40 UTC1h 10m
2026-05-04 L77 JAD → JAD May 4, 05:30 UTCMay 4, 07:00 UTC1h 30m
2026-05-03 L77 JAD → JAD May 3, 04:35 UTCMay 3, 05:55 UTC1h 20m

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.

Mode-S 7C3C75 frequently asked

What is Mode-S code 7C3C75?
7C3C75 is an ICAO 24-bit transponder address. Allocated to Australia.
Where is Mode-S 7C3C75 registered?
Mode-S code 7C3C75 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C3C75 broadcasting right now?
No active broadcast right now. Last signal was 19h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C3C75, octal 37036165, decimal 8,141,941.
What flights does 7C3C75 operate?
Mode-S 7C3C75 has broadcast 1 distinct callsign, including L77.