Apparatus

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sensors Mode-S transponder

7C259B

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-HPP · BEECH 200 Super King Air · operated by VEN AIR PTY LTD

Hex
7C259B
Octal
37022633
Decimal
8,136,091
Country
AU
Tail
VH-HPP
Type
BE20
No current signal · last broadcast 2d ago
Flights observed
101
Distinct callsigns
1
Country
AU
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 7C259B.

Country allocation

The ICAO 24-bit address 7C259B 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
HPP - 101 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 HPP - Jul 15, 21:55 UTCJul 15, 22:05 UTC10m
2026-07-15 HPP - Jul 15, 19:45 UTCJul 15, 20:00 UTC15m
2026-07-08 HPP - Jul 8, 22:20 UTCJul 8, 22:30 UTC10m
2026-07-08 HPP - Jul 8, 19:40 UTCJul 8, 20:00 UTC20m
2026-07-07 HPP - Jul 7, 02:00 UTCJul 7, 02:10 UTC10m
2026-07-06 HPP - Jul 6, 23:55 UTCJul 7, 00:15 UTC20m
2026-07-06 HPP - Jul 6, 22:20 UTCJul 6, 22:30 UTC10m
2026-07-06 HPP - Jul 6, 20:10 UTCJul 6, 20:25 UTC15m
2026-07-01 HPP - Jul 1, 22:20 UTCJul 1, 22:35 UTC15m
2026-07-01 HPP - Jul 1, 19:55 UTCJul 1, 20:15 UTC20m
2026-06-30 HPP - Jun 30, 01:45 UTCJun 30, 02:00 UTC15m
2026-06-30 HPP - Jun 30, 00:20 UTCJun 30, 00:49 UTC30m
2026-06-29 HPP - Jun 29, 22:10 UTCJun 29, 22:24 UTC15m
2026-06-29 HPP - Jun 29, 20:40 UTCJun 29, 20:59 UTC20m
2026-06-24 HPP - Jun 24, 21:50 UTCJun 24, 22:04 UTC15m
2026-06-24 HPP - Jun 24, 19:49 UTCJun 24, 20:09 UTC20m
2026-06-23 HPP - Jun 23, 01:40 UTCJun 23, 01:50 UTC10m
2026-06-23 HPP - Jun 23, 00:15 UTCJun 23, 00:45 UTC30m
2026-06-22 HPP - Jun 22, 21:25 UTCJun 22, 21:40 UTC15m
2026-06-22 HPP - Jun 22, 20:04 UTCJun 22, 20:30 UTC25m
2026-06-17 HPP - Jun 17, 22:05 UTCJun 17, 22:25 UTC20m
2026-06-17 HPP - Jun 17, 19:40 UTCJun 17, 20:00 UTC20m
2026-06-17 HPP - Jun 17, 00:05 UTCJun 17, 00:25 UTC20m
2026-06-16 HPP - Jun 16, 22:20 UTCJun 16, 22:40 UTC20m
2026-06-16 HPP - Jun 16, 01:30 UTCJun 16, 01:45 UTC15m
2026-06-16 HPP - Jun 16, 00:24 UTCJun 16, 00:50 UTC25m
2026-06-15 HPP - Jun 15, 20:59 UTCJun 15, 21:20 UTC20m
2026-06-15 HPP - Jun 15, 20:00 UTCJun 15, 20:20 UTC20m
2026-06-10 HPP - Jun 10, 22:45 UTCJun 10, 23:00 UTC15m
2026-06-10 HPP - Jun 10, 20:35 UTCJun 10, 21:05 UTC30m
2026-06-09 HPP - Jun 9, 01:25 UTCJun 9, 01:40 UTC15m
2026-06-09 HPP - Jun 9, 00:20 UTCJun 9, 00:45 UTC25m
2026-06-08 HPP - Jun 8, 21:00 UTCJun 8, 21:20 UTC20m
2026-06-08 HPP - Jun 8, 19:55 UTCJun 8, 20:15 UTC20m
2026-06-03 HPP - Jun 3, 22:25 UTCJun 3, 22:40 UTC15m
2026-06-03 HPP - Jun 3, 20:00 UTCJun 3, 20:25 UTC25m
2026-06-03 HPP - Jun 3, 09:10 UTCJun 3, 09:25 UTC15m
2026-06-03 HPP - Jun 3, 04:55 UTCJun 3, 05:25 UTC30m
2026-06-03 HPP - Jun 3, 00:30 UTCJun 3, 00:50 UTC20m
2026-06-02 HPP - Jun 2, 22:50 UTCJun 2, 23:05 UTC15m
2026-06-02 HPP - Jun 2, 02:20 UTCJun 2, 02:35 UTC15m
2026-06-02 HPP - Jun 2, 00:10 UTCJun 2, 00:30 UTC20m
2026-06-01 HPP - Jun 1, 22:25 UTCJun 1, 22:40 UTC15m
2026-06-01 HPP - Jun 1, 20:30 UTCJun 1, 20:50 UTC20m
2026-05-19 HPP - May 19, 05:40 UTCMay 19, 05:55 UTC15m
2026-05-19 HPP - May 19, 00:00 UTCMay 19, 00:20 UTC20m
2026-05-18 HPP - May 18, 22:25 UTCMay 18, 22:35 UTC10m
2026-05-18 HPP - May 18, 20:15 UTCMay 18, 20:30 UTC15m
2026-05-15 HPP - May 15, 04:35 UTCMay 15, 04:45 UTC10m
2026-05-14 HPP - May 14, 19:55 UTCMay 14, 20:15 UTC20m

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

Mode-S 7C259B frequently asked

What is Mode-S code 7C259B?
7C259B is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-HPP.
Where is Mode-S 7C259B registered?
Mode-S code 7C259B is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C259B 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 7C259B, octal 37022633, decimal 8,136,091.
What flights does 7C259B operate?
Mode-S 7C259B has broadcast 1 distinct callsign, including HPP.