Apparatus

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sensors Mode-S transponder

7C6590

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-UCI · CESSNA 402 Businessliner · operated by HANDEL AVIATION PTY LTD

Hex
7C6590
Octal
37062620
Decimal
8,152,464
Country
AU
Tail
VH-UCI
Type
C402
No current signal · last broadcast 2d ago
Flights observed
40
Distinct callsigns
1
Country
AU
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 7C6590.

Country allocation

The ICAO 24-bit address 7C6590 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
UCI - 39 2026-07-24

Recent flights last 40

DateFlightRouteTakeoffLandingDuration
2026-07-24 UCI BWU → BWU Jul 24, 23:20 UTCJul 25, 02:20 UTC3h 0m
2026-07-24 UCI BWU → BWU Jul 24, 00:45 UTCJul 24, 04:30 UTC3h 45m
2026-07-19 UCI - Jul 19, 01:05 UTCJul 19, 01:55 UTC50m
2026-07-16 UCI - Jul 16, 23:59 UTCJul 17, 00:50 UTC50m
2026-07-16 UCI BWU → BWU Jul 16, 23:40 UTCJul 16, 23:44 UTC5m
2026-07-13 UCI BWU → BWU Jul 13, 00:20 UTCJul 13, 03:10 UTC2h 50m
2026-07-12 UCI - Jul 12, 03:35 UTCJul 12, 04:15 UTC40m
2026-07-10 UCI - Jul 10, 22:40 UTCJul 10, 23:05 UTC25m
2026-07-10 UCI - Jul 10, 04:30 UTCJul 10, 05:05 UTC35m
2026-07-10 UCI - Jul 10, 01:25 UTCJul 10, 02:10 UTC45m
2026-07-06 UCI - Jul 6, 03:45 UTCJul 6, 04:50 UTC1h 5m
2026-07-06 UCI - Jul 6, 02:10 UTCJul 6, 02:40 UTC30m
2026-06-27 UCI - Jun 27, 02:55 UTCJun 27, 03:30 UTC35m
2026-06-25 UCI - Jun 25, 06:55 UTCJun 25, 07:05 UTC10m
2026-06-25 UCI - Jun 25, 06:09 UTCJun 25, 06:20 UTC10m
2026-06-25 UCI - Jun 25, 02:45 UTCJun 25, 04:54 UTC2h 10m
2026-06-24 UCI - Jun 24, 03:40 UTCJun 24, 05:49 UTC2h 10m
2026-06-23 UCI - Jun 23, 01:45 UTCJun 23, 03:25 UTC1h 40m
2026-06-21 UCI - Jun 21, 03:59 UTCJun 21, 04:49 UTC50m
2026-06-21 UCI - Jun 21, 01:55 UTCJun 21, 03:10 UTC1h 15m
2026-06-11 UCI JAD → JAD Jun 11, 07:35 UTCJun 11, 08:00 UTC25m
2026-06-03 UCI - Jun 3, 06:55 UTCJun 3, 07:45 UTC50m
2026-05-30 UCI - May 30, 23:55 UTCMay 31, 01:11 UTC1h 16m
2026-05-30 UCI - May 30, 01:55 UTCMay 30, 04:05 UTC2h 10m
2026-05-30 - - May 30, 00:00 UTCMay 30, 00:25 UTC25m
2026-05-15 UCI - May 15, 03:55 UTCMay 15, 05:00 UTC1h 5m
2026-05-13 UCI - May 13, 07:40 UTCMay 13, 08:30 UTC50m
2026-05-13 UCI - May 13, 06:20 UTCMay 13, 06:40 UTC20m
2026-05-13 UCI - May 13, 02:05 UTCMay 13, 05:15 UTC3h 10m
2026-05-11 UCI - May 11, 04:00 UTCMay 11, 06:50 UTC2h 50m
2026-05-09 UCI - May 9, 05:45 UTCMay 9, 07:00 UTC1h 15m
2026-05-01 UCI - May 1, 02:10 UTCMay 1, 03:00 UTC50m
2026-04-30 UCI - Apr 30, 23:45 UTCMay 1, 00:45 UTC1h 0m
2026-04-30 UCI - Apr 30, 00:15 UTCApr 30, 03:40 UTC3h 25m
2026-04-29 UCI MEB → MEB Apr 29, 02:35 UTCApr 29, 04:39 UTC2h 5m
2026-04-28 UCI BWU → MEB Apr 28, 07:05 UTCApr 28, 09:40 UTC2h 35m
2026-04-19 UCI - Apr 19, 04:00 UTCApr 19, 04:40 UTC40m
2026-04-19 UCI - Apr 19, 00:00 UTCApr 19, 02:20 UTC2h 20m
2026-04-18 UCI - Apr 18, 01:25 UTCApr 18, 03:20 UTC1h 55m
2026-04-18 UCI - Apr 18, 01:10 UTCApr 18, 01:20 UTC10m

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

Mode-S 7C6590 frequently asked

What is Mode-S code 7C6590?
7C6590 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-UCI.
Where is Mode-S 7C6590 registered?
Mode-S code 7C6590 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C6590 broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C6590, octal 37062620, decimal 8,152,464.
What flights does 7C6590 operate?
Mode-S 7C6590 has broadcast 1 distinct callsign, including UCI.