Apparatus

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sensors Mode-S transponder

7C2533

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-HMT · ROBINSON R-44 Raven · operated by AUSTRALASIAN HELICOPTERS PTY LTD

Hex
7C2533
Octal
37022463
Decimal
8,135,987
Country
AU
Tail
VH-HMT
Type
R44
No current signal · last broadcast 4h ago
Flights observed
72
Distinct callsigns
1
Country
AU
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 7C2533.

Country allocation

The ICAO 24-bit address 7C2533 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
HMT - 72 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 HMT MEB → MEB May 30, 06:15 UTCMay 30, 06:35 UTC20m
2026-05-30 HMT - May 30, 05:25 UTCMay 30, 05:40 UTC15m
2026-05-30 HMT - May 30, 02:10 UTCMay 30, 02:30 UTC20m
2026-05-30 HMT MEB → MEB May 30, 01:00 UTCMay 30, 01:20 UTC20m
2026-05-29 HMT - May 29, 05:45 UTCMay 29, 06:05 UTC20m
2026-05-24 HMT MEB → MEB May 24, 05:10 UTCMay 24, 05:35 UTC25m
2026-05-24 HMT MEB → MEB May 24, 01:35 UTCMay 24, 01:55 UTC20m
2026-05-23 HMT MEB → MEB May 23, 23:40 UTCMay 24, 00:00 UTC20m
2026-05-23 HMT MEB → MEB May 23, 06:05 UTCMay 23, 06:20 UTC15m
2026-05-23 HMT MEB → MEB May 23, 04:15 UTCMay 23, 05:20 UTC1h 5m
2026-05-22 HMT - May 22, 01:20 UTCMay 22, 01:45 UTC25m
2026-05-21 HMT MEB → MEB May 21, 03:40 UTCMay 21, 04:45 UTC1h 5m
2026-05-21 HMT MEB → MEB May 21, 00:45 UTCMay 21, 01:35 UTC50m
2026-05-20 HMT MEB → MEB May 20, 04:55 UTCMay 20, 06:35 UTC1h 40m
2026-05-20 HMT - May 20, 01:05 UTCMay 20, 01:30 UTC25m
2026-05-17 HMT MEB → MEB May 17, 03:30 UTCMay 17, 03:50 UTC20m
2026-05-17 HMT MEB → MEB May 17, 01:20 UTCMay 17, 01:40 UTC20m
2026-05-16 HMT MEB → MEB May 16, 03:10 UTCMay 16, 04:00 UTC50m
2026-05-16 HMT - May 16, 01:30 UTCMay 16, 01:45 UTC15m
2026-05-15 HMT MEB → MEB May 15, 05:20 UTCMay 15, 05:40 UTC20m
2026-05-15 HMT - May 15, 04:15 UTCMay 15, 04:30 UTC15m
2026-05-15 HMT MEB → MEB May 15, 01:30 UTCMay 15, 02:35 UTC1h 5m
2026-05-12 HMT MEB → MEB May 12, 23:25 UTCMay 13, 00:40 UTC1h 15m
2026-05-11 HMT MEB → MEB May 11, 03:15 UTCMay 11, 03:35 UTC20m
2026-05-10 HMT MEB → MEB May 10, 05:00 UTCMay 10, 05:14 UTC15m
2026-05-10 HMT MEB → MEB May 10, 04:04 UTCMay 10, 04:19 UTC15m
2026-05-06 HMT - May 6, 05:00 UTCMay 6, 05:20 UTC19m
2026-05-06 HMT - May 6, 01:10 UTCMay 6, 01:30 UTC20m
2026-05-05 HMT MEB → MEB May 5, 06:10 UTCMay 5, 06:35 UTC25m
2026-05-01 HMT MEB → MEB May 1, 22:55 UTCMay 1, 23:15 UTC20m
2026-05-01 HMT MEB → MEB May 1, 04:05 UTCMay 1, 04:30 UTC25m
2026-05-01 HMT - May 1, 01:10 UTCMay 1, 01:30 UTC20m
2026-05-01 HMT - May 1, 00:20 UTCMay 1, 00:35 UTC15m
2026-04-30 HMT - Apr 30, 01:15 UTCApr 30, 01:30 UTC15m
2026-04-29 HMT MEB → MEB Apr 29, 05:50 UTCApr 29, 06:10 UTC20m
2026-04-28 HMT - Apr 28, 23:25 UTCApr 28, 23:45 UTC20m
2026-04-28 HMT MEB → MEB Apr 28, 06:05 UTCApr 28, 06:35 UTC30m
2026-04-27 HMT MEB → MEB Apr 27, 01:20 UTCApr 27, 01:50 UTC30m
2026-04-27 HMT - Apr 27, 00:15 UTCApr 27, 00:35 UTC20m
2026-04-26 HMT MEB → MEB Apr 26, 04:15 UTCApr 26, 05:30 UTC1h 15m
2026-04-26 HMT - Apr 26, 03:15 UTCApr 26, 03:40 UTC25m
2026-04-26 HMT - Apr 26, 01:15 UTCApr 26, 01:45 UTC30m
2026-04-25 HMT MEB → MEB Apr 25, 06:05 UTCApr 25, 06:20 UTC15m
2026-04-25 HMT MEB → MEB Apr 25, 05:20 UTCApr 25, 05:35 UTC15m
2026-04-25 HMT MEB → MEB Apr 25, 04:20 UTCApr 25, 04:40 UTC20m
2026-04-25 HMT - Apr 25, 01:20 UTCApr 25, 01:45 UTC25m
2026-04-25 HMT MEB → MEB Apr 25, 00:10 UTCApr 25, 00:35 UTC25m
2026-04-24 HMT MEB → MEB Apr 24, 01:30 UTCApr 24, 03:40 UTC2h 10m
2026-04-23 HMT MEB → MEB Apr 23, 05:05 UTCApr 23, 05:20 UTC15m
2026-04-23 HMT - Apr 23, 03:15 UTCApr 23, 04:25 UTC1h 10m

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

Mode-S 7C2533 frequently asked

What is Mode-S code 7C2533?
7C2533 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-HMT.
Where is Mode-S 7C2533 registered?
Mode-S code 7C2533 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C2533 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C2533, octal 37022463, decimal 8,135,987.
What flights does 7C2533 operate?
Mode-S 7C2533 has broadcast 1 distinct callsign, including HMT.