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sensors Mode-S transponder

7C7FD4

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-ZJA · CESSNA 172 Skyhawk · operated by INTERNATIONAL AVIATION ALLIANCE PTY LTD

Hex
7C7FD4
Octal
37077724
Decimal
8,159,188
Country
AU
Tail
VH-ZJA
Type
C172
No current signal · last broadcast Jul 26, 00:45 UTC
Flights observed
189
Distinct callsigns
1
Country
AU
Last broadcast
Jul 26, 00:45 UTC

Last known position

Most recent position reported by Mode-S 7C7FD4.

Country allocation

The ICAO 24-bit address 7C7FD4 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
ZJA - 189 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ZJA - Jul 26, 00:00 UTCJul 26, 00:45 UTC45m
2026-07-23 ZJA - Jul 23, 23:40 UTCJul 24, 01:25 UTC1h 45m
2026-07-21 ZJA - Jul 21, 03:50 UTCJul 21, 04:45 UTC55m
2026-07-21 ZJA - Jul 21, 01:50 UTCJul 21, 03:45 UTC1h 55m
2026-07-21 ZJA - Jul 21, 00:25 UTCJul 21, 00:55 UTC30m
2026-07-20 ZJA - Jul 20, 23:10 UTCJul 20, 23:40 UTC30m
2026-07-20 ZJA - Jul 20, 22:35 UTCJul 20, 23:00 UTC25m
2026-07-20 ZJA - Jul 20, 02:20 UTCJul 20, 03:45 UTC1h 25m
2026-07-18 ZJA - Jul 18, 01:05 UTCJul 18, 02:00 UTC55m
2026-07-17 ZJA - Jul 17, 04:39 UTCJul 17, 05:39 UTC1h 0m
2026-07-17 ZJA - Jul 17, 03:14 UTCJul 17, 03:50 UTC35m
2026-07-17 ZJA - Jul 17, 01:20 UTCJul 17, 02:15 UTC55m
2026-07-17 ZJA - Jul 17, 00:10 UTCJul 17, 00:45 UTC35m
2026-07-15 ZJA - Jul 15, 04:25 UTCJul 15, 05:10 UTC45m
2026-07-10 ZJA - Jul 10, 23:45 UTCJul 11, 00:15 UTC30m
2026-07-10 ZJA - Jul 10, 05:25 UTCJul 10, 06:40 UTC1h 15m
2026-07-10 ZJA - Jul 10, 03:55 UTCJul 10, 04:50 UTC55m
2026-07-10 ZJA - Jul 10, 01:10 UTCJul 10, 02:45 UTC1h 35m
2026-07-09 ZJA - Jul 9, 05:15 UTCJul 9, 06:25 UTC1h 10m
2026-07-09 ZJA - Jul 9, 03:40 UTCJul 9, 04:40 UTC1h 0m
2026-07-08 ZJA - Jul 8, 23:50 UTCJul 9, 02:25 UTC2h 35m
2026-07-08 ZJA - Jul 8, 04:55 UTCJul 8, 05:55 UTC1h 0m
2026-07-08 ZJA - Jul 8, 03:20 UTCJul 8, 04:25 UTC1h 5m
2026-07-07 ZJA - Jul 7, 03:55 UTCJul 7, 04:40 UTC45m
2026-07-06 ZJA - Jul 6, 04:35 UTCJul 6, 06:25 UTC1h 50m
2026-07-06 ZJA - Jul 6, 00:50 UTCJul 6, 03:55 UTC3h 5m
2026-07-05 ZJA - Jul 5, 22:20 UTCJul 6, 00:10 UTC1h 50m
2026-07-04 ZJA - Jul 4, 02:05 UTCJul 4, 02:50 UTC45m
2026-07-03 ZJA - Jul 3, 22:45 UTCJul 3, 23:30 UTC45m
2026-07-01 ZJA - Jul 1, 02:45 UTCJul 1, 04:30 UTC1h 45m
2026-07-01 ZJA - Jul 1, 00:25 UTCJul 1, 01:05 UTC40m
2026-06-30 ZJA - Jun 30, 22:35 UTCJun 30, 23:20 UTC45m
2026-06-29 ZJA - Jun 29, 04:04 UTCJun 29, 04:20 UTC15m
2026-06-28 ZJA - Jun 28, 22:59 UTCJun 28, 23:34 UTC35m
2026-06-27 ZJA - Jun 27, 02:39 UTCJun 27, 02:55 UTC15m
2026-06-26 ZJA - Jun 26, 05:30 UTCJun 26, 06:45 UTC1h 15m
2026-06-26 ZJA - Jun 26, 03:20 UTCJun 26, 04:04 UTC45m
2026-06-25 ZJA - Jun 25, 04:54 UTCJun 25, 05:25 UTC30m
2026-06-24 ZJA - Jun 24, 07:59 UTCJun 24, 09:09 UTC1h 10m
2026-06-24 ZJA - Jun 24, 04:39 UTCJun 24, 05:15 UTC35m
2026-06-24 ZJA - Jun 24, 02:54 UTCJun 24, 03:35 UTC40m
2026-06-24 ZJA - Jun 24, 00:30 UTCJun 24, 00:55 UTC25m
2026-06-23 ZJA - Jun 23, 21:20 UTCJun 23, 21:59 UTC40m
2026-06-23 ZJA - Jun 23, 04:50 UTCJun 23, 05:29 UTC40m
2026-06-23 ZJA - Jun 23, 02:45 UTCJun 23, 03:00 UTC15m
2026-06-23 ZJA - Jun 23, 02:15 UTCJun 23, 02:40 UTC25m
2026-06-23 ZJA - Jun 23, 01:00 UTCJun 23, 01:40 UTC40m
2026-06-23 ZJA - Jun 23, 00:30 UTCJun 23, 00:50 UTC20m
2026-06-22 ZJA - Jun 22, 05:49 UTCJun 22, 06:39 UTC50m
2026-06-22 ZJA - Jun 22, 04:09 UTCJun 22, 04:59 UTC50m

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 VH-ZJA page for operator, model, and routing details .

Mode-S 7C7FD4 frequently asked

What is Mode-S code 7C7FD4?
7C7FD4 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-ZJA.
Where is Mode-S 7C7FD4 registered?
Mode-S code 7C7FD4 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C7FD4 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 00:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C7FD4, octal 37077724, decimal 8,159,188.
What flights does 7C7FD4 operate?
Mode-S 7C7FD4 has broadcast 1 distinct callsign, including ZJA.