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sensors Mode-S transponder

7C2B59

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-IUJ · AGUSTA AW-139 · operated by INTEGRATED HELICOPTER SERVICES PTY LTD

Hex
7C2B59
Octal
37025531
Decimal
8,137,561
Country
AU
Tail
VH-IUJ
Type
A139
Broadcasting now · callsign IUJ · 3,775 ft
Flights observed
144
Distinct callsigns
1
Country
AU
Last broadcast
4h ago

Current position

7C2B59 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 7C2B59 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
IUJ - 144 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 IUJ - Jul 13, 21:35 UTCJul 13, 22:15 UTC40m
2026-07-13 IUJ - Jul 13, 05:45 UTCJul 13, 07:25 UTC1h 40m
2026-07-13 IUJ - Jul 13, 04:35 UTCJul 13, 05:05 UTC30m
2026-07-13 IUJ - Jul 13, 03:10 UTCJul 13, 03:30 UTC20m
2026-07-13 IUJ - Jul 13, 01:40 UTCJul 13, 02:25 UTC45m
2026-07-12 IUJ - Jul 12, 21:20 UTCJul 12, 21:50 UTC30m
2026-07-10 IUJ - Jul 10, 02:55 UTCJul 10, 03:15 UTC20m
2026-07-09 IUJ - Jul 9, 21:45 UTCJul 9, 22:30 UTC45m
2026-07-09 IUJ - Jul 9, 01:20 UTCJul 9, 02:00 UTC40m
2026-07-08 IUJ - Jul 8, 21:20 UTCJul 8, 22:05 UTC45m
2026-07-08 IUJ - Jul 8, 04:05 UTCJul 8, 05:15 UTC1h 10m
2026-07-08 IUJ - Jul 8, 00:35 UTCJul 8, 01:05 UTC30m
2026-07-07 IUJ - Jul 7, 23:10 UTCJul 7, 23:30 UTC20m
2026-07-07 IUJ - Jul 7, 03:00 UTCJul 7, 03:15 UTC15m
2026-07-06 IUJ - Jul 6, 21:35 UTCJul 6, 22:20 UTC45m
2026-07-04 IUJ WMB → WMB Jul 4, 05:05 UTCJul 4, 05:20 UTC15m
2026-07-03 IUJ - Jul 3, 02:25 UTCJul 3, 02:45 UTC20m
2026-07-02 IUJ - Jul 2, 21:15 UTCJul 2, 21:40 UTC25m
2026-06-30 IUJ - Jun 30, 06:25 UTCJun 30, 06:40 UTC15m
2026-06-30 IUJ - Jun 30, 01:00 UTCJun 30, 01:25 UTC25m
2026-06-29 IUJ - Jun 29, 23:39 UTCJun 30, 00:00 UTC20m
2026-06-29 IUJ - Jun 29, 21:39 UTCJun 29, 22:39 UTC1h 0m
2026-06-29 IUJ - Jun 29, 01:29 UTCJun 29, 01:50 UTC20m
2026-06-28 IUJ - Jun 28, 21:10 UTCJun 28, 21:45 UTC35m
2026-06-27 IUJ - Jun 27, 05:59 UTCJun 27, 06:50 UTC50m
2026-06-27 IUJ - Jun 27, 04:34 UTCJun 27, 05:10 UTC35m
2026-06-27 IUJ - Jun 27, 03:34 UTCJun 27, 04:00 UTC25m
2026-06-27 IUJ - Jun 27, 02:20 UTCJun 27, 02:50 UTC30m
2026-06-26 IUJ - Jun 26, 06:19 UTCJun 26, 06:45 UTC25m
2026-06-26 IUJ - Jun 26, 02:44 UTCJun 26, 02:54 UTC10m
2026-06-26 IUJ - Jun 26, 00:59 UTCJun 26, 01:45 UTC45m
2026-06-25 IUJ - Jun 25, 06:09 UTCJun 25, 06:40 UTC30m
2026-06-24 IUJ - Jun 24, 21:14 UTCJun 24, 22:10 UTC55m
2026-06-24 IUJ WMB → WMB Jun 24, 05:29 UTCJun 24, 06:39 UTC1h 10m
2026-06-24 IUJ - Jun 24, 02:40 UTCJun 24, 03:50 UTC1h 10m
2026-06-24 IUJ - Jun 24, 01:09 UTCJun 24, 01:34 UTC25m
2026-06-23 IUJ - Jun 23, 23:44 UTCJun 24, 00:20 UTC35m
2026-06-23 IUJ - Jun 23, 22:29 UTCJun 23, 22:55 UTC25m
2026-06-23 IUJ - Jun 23, 21:14 UTCJun 23, 21:49 UTC35m
2026-06-23 IUJ - Jun 23, 01:45 UTCJun 23, 02:24 UTC40m
2026-06-22 IUJ - Jun 22, 21:10 UTCJun 22, 21:59 UTC50m
2026-06-20 IUJ - Jun 20, 05:39 UTCJun 20, 06:35 UTC55m
2026-06-20 IUJ - Jun 20, 04:09 UTCJun 20, 05:04 UTC55m
2026-06-20 IUJ WMB → MEB Jun 20, 02:00 UTCJun 20, 03:09 UTC1h 10m
2026-06-19 IUJ - Jun 19, 06:54 UTCJun 19, 07:14 UTC20m
2026-06-19 IUJ - Jun 19, 00:20 UTCJun 19, 00:29 UTC10m
2026-06-18 IUJ - Jun 18, 21:15 UTCJun 18, 21:50 UTC35m
2026-06-18 IUJ WMB → WMB Jun 18, 03:10 UTCJun 18, 03:15 UTC5m
2026-06-15 IUJ - Jun 15, 23:35 UTCJun 16, 01:04 UTC1h 30m
2026-06-14 IUJ - Jun 14, 22:55 UTCJun 14, 23:54 UTC59m

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

Mode-S 7C2B59 frequently asked

What is Mode-S code 7C2B59?
7C2B59 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-IUJ.
Where is Mode-S 7C2B59 registered?
Mode-S code 7C2B59 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C2B59 broadcasting right now?
Yes. Mode-S 7C2B59 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C2B59, octal 37025531, decimal 8,137,561.
What flights does 7C2B59 operate?
Mode-S 7C2B59 has broadcast 1 distinct callsign, including IUJ.