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sensors Mode-S transponder

7C127D

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-DXR · DIAMOND DA-40 Club Star · operated by UNIVERSITY OF NEW SOUTH WALES

Hex
7C127D
Octal
37011175
Decimal
8,131,197
Country
AU
Tail
VH-DXR
Type
DA40
No current signal · last broadcast Jul 26, 06:10 UTC
Flights observed
71
Distinct callsigns
1
Country
AU
Last broadcast
Jul 26, 06:10 UTC

Last known position

Most recent position reported by Mode-S 7C127D.

Country allocation

The ICAO 24-bit address 7C127D 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
DXR - 71 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DXR MBW → MBW Jul 26, 05:35 UTCJul 26, 06:05 UTC30m
2026-07-26 DXR MBW → MBW Jul 26, 02:05 UTCJul 26, 02:25 UTC20m
2026-07-26 DXR MBW → MBW Jul 26, 01:30 UTCJul 26, 01:50 UTC20m
2026-07-25 DXR MBW → MBW Jul 25, 22:35 UTCJul 25, 22:50 UTC15m
2026-07-25 DXR MBW → MBW Jul 25, 03:35 UTCJul 25, 04:10 UTC35m
2026-07-24 DXR - Jul 24, 05:05 UTCJul 24, 05:35 UTC30m
2026-07-24 DXR - Jul 24, 02:35 UTCJul 24, 03:05 UTC30m
2026-07-24 DXR MBW → MBW Jul 24, 00:20 UTCJul 24, 00:45 UTC25m
2026-07-24 DXR MBW → MBW Jul 24, 00:05 UTCJul 24, 00:15 UTC10m
2026-07-23 DXR MBW → MBW Jul 23, 00:05 UTCJul 23, 00:50 UTC45m
2026-07-22 DXR - Jul 22, 04:05 UTCJul 22, 05:25 UTC1h 20m
2026-07-22 DXR MBW → MEB Jul 22, 03:45 UTCJul 22, 04:00 UTC15m
2026-07-21 DXR MBW → MBW Jul 21, 05:55 UTCJul 21, 06:50 UTC55m
2026-07-21 DXR MBW → MBW Jul 21, 04:30 UTCJul 21, 05:15 UTC45m
2026-07-21 DXR MBW → MBW Jul 21, 02:20 UTCJul 21, 03:35 UTC1h 15m
2026-07-21 DXR MBW → MBW Jul 21, 00:40 UTCJul 21, 01:15 UTC35m
2026-07-20 DXR MBW → MBW Jul 20, 22:40 UTCJul 21, 00:00 UTC1h 20m
2026-07-20 DXR MBW → MBW Jul 20, 05:05 UTCJul 20, 06:30 UTC1h 25m
2026-07-20 DXR MBW → MBW Jul 20, 01:45 UTCJul 20, 03:05 UTC1h 20m
2026-07-20 DXR MBW → MBW Jul 20, 00:05 UTCJul 20, 00:55 UTC50m
2026-07-19 DXR MBW → MBW Jul 19, 23:00 UTCJul 19, 23:55 UTC55m
2026-07-19 DXR MBW → MBW Jul 19, 01:15 UTCJul 19, 02:45 UTC1h 30m
2026-07-18 DXR - Jul 18, 04:55 UTCJul 18, 05:45 UTC50m
2026-07-18 DXR - Jul 18, 03:35 UTCJul 18, 04:10 UTC35m
2026-07-18 DXR MBW → MBW Jul 18, 00:19 UTCJul 18, 02:45 UTC2h 25m
2026-07-17 DXR MBW → MBW Jul 17, 23:00 UTCJul 17, 23:30 UTC30m
2026-07-17 DXR MBW → MBW Jul 17, 05:20 UTCJul 17, 06:40 UTC1h 20m
2026-07-17 DXR MBW → MBW Jul 17, 02:34 UTCJul 17, 04:14 UTC1h 40m
2026-07-15 DXR - Jul 15, 03:55 UTCJul 15, 04:10 UTC15m
2026-07-15 DXR MBW → MBW Jul 15, 01:20 UTCJul 15, 01:50 UTC30m
2026-07-13 DXR - Jul 13, 08:10 UTCJul 13, 08:45 UTC35m
2026-07-11 DXR MBW → MBW Jul 11, 04:45 UTCJul 11, 05:25 UTC40m
2026-07-11 DXR MBW → MBW Jul 11, 02:25 UTCJul 11, 03:10 UTC45m
2026-07-10 DXR MBW → MBW Jul 10, 05:00 UTCJul 10, 06:20 UTC1h 20m
2026-07-10 DXR - Jul 10, 03:15 UTCJul 10, 03:50 UTC35m
2026-07-10 DXR - Jul 10, 00:50 UTCJul 10, 01:35 UTC45m
2026-07-09 DXR MBW → MBW Jul 9, 06:15 UTCJul 9, 06:55 UTC40m
2026-07-06 DXR - Jul 6, 04:10 UTCJul 6, 06:55 UTC2h 45m
2026-07-06 DXR MBW → MEB Jul 6, 03:35 UTCJul 6, 03:55 UTC20m
2026-07-02 DXR - Jul 2, 06:30 UTCJul 2, 07:15 UTC45m
2026-07-02 DXR - Jul 2, 05:40 UTCJul 2, 05:55 UTC15m
2026-07-02 DXR - Jul 2, 04:10 UTCJul 2, 04:35 UTC25m
2026-07-02 DXR - Jul 2, 01:40 UTCJul 2, 03:25 UTC1h 45m
2026-06-11 DXR - Jun 11, 02:10 UTCJun 11, 02:50 UTC40m
2026-06-11 DXR - Jun 11, 00:50 UTCJun 11, 01:20 UTC30m
2026-06-06 DXR BWU → BWU Jun 6, 02:50 UTCJun 6, 05:15 UTC2h 25m
2026-06-03 DXR BWU → BWU Jun 3, 02:30 UTCJun 3, 03:15 UTC45m
2026-05-20 DXR - May 20, 03:25 UTCMay 20, 04:30 UTC1h 5m
2026-05-19 DXR - May 19, 23:45 UTCMay 20, 00:50 UTC1h 5m
2026-05-09 DXR BWU → BWU May 9, 22:30 UTCMay 9, 23:44 UTC1h 15m

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

Mode-S 7C127D frequently asked

What is Mode-S code 7C127D?
7C127D is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-DXR.
Where is Mode-S 7C127D registered?
Mode-S code 7C127D is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C127D broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 06:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C127D, octal 37011175, decimal 8,131,197.
What flights does 7C127D operate?
Mode-S 7C127D has broadcast 1 distinct callsign, including DXR.