Apparatus

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sensors Mode-S transponder

7C4F44

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-PXY · BELL 412 · operated by BABCOCK MISSION CRITICAL SERVICES AUSTRALASIA PTY LTD

Hex
7C4F44
Octal
37047504
Decimal
8,146,756
Country
AU
Tail
VH-PXY
Type
B412
No current signal · last broadcast 1d ago
Flights observed
150
Distinct callsigns
3
Country
AU
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 7C4F44.

Country allocation

The ICAO 24-bit address 7C4F44 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 3 distinct

Callsign Airline Flights Last seen
RSCU54 - 133 2026-07-16
POL54 - 13 2026-04-27
PXY - 4 2026-06-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 RSCU54 - Jul 16, 15:10 UTCJul 16, 15:19 UTC10m
2026-07-16 RSCU54 - Jul 16, 14:05 UTCJul 16, 14:35 UTC30m
2026-07-16 RSCU54 - Jul 16, 11:40 UTCJul 16, 12:05 UTC25m
2026-07-16 RSCU54 - Jul 16, 08:30 UTCJul 16, 09:15 UTC45m
2026-07-16 RSCU54 - Jul 16, 06:50 UTCJul 16, 07:30 UTC40m
2026-07-14 RSCU54 - Jul 14, 06:25 UTCJul 14, 07:25 UTC1h 0m
2026-07-13 RSCU54 - Jul 13, 16:20 UTCJul 13, 16:45 UTC25m
2026-07-13 RSCU54 - Jul 13, 14:50 UTCJul 13, 15:05 UTC15m
2026-07-12 RSCU54 - Jul 12, 07:25 UTCJul 12, 08:40 UTC1h 15m
2026-07-12 RSCU54 - Jul 12, 05:40 UTCJul 12, 06:05 UTC25m
2026-07-12 RSCU54 ADL → ADL Jul 12, 01:45 UTCJul 12, 02:10 UTC25m
2026-07-11 RSCU54 - Jul 11, 19:50 UTCJul 11, 20:00 UTC10m
2026-07-11 RSCU54 - Jul 11, 18:35 UTCJul 11, 19:10 UTC35m
2026-07-11 RSCU54 - Jul 11, 15:10 UTCJul 11, 15:40 UTC30m
2026-07-09 RSCU54 - Jul 9, 22:10 UTCJul 9, 22:35 UTC25m
2026-07-09 RSCU54 - Jul 9, 19:15 UTCJul 9, 19:45 UTC30m
2026-07-08 RSCU54 - Jul 8, 07:30 UTCJul 8, 07:40 UTC10m
2026-07-08 RSCU54 - Jul 8, 06:20 UTCJul 8, 06:45 UTC25m
2026-07-08 RSCU54 - Jul 8, 04:40 UTCJul 8, 04:55 UTC15m
2026-07-08 RSCU54 - Jul 8, 03:35 UTCJul 8, 04:05 UTC30m
2026-07-08 RSCU54 - Jul 8, 00:55 UTCJul 8, 01:30 UTC35m
2026-07-07 RSCU54 - Jul 7, 09:45 UTCJul 7, 10:55 UTC1h 10m
2026-07-07 RSCU54 - Jul 7, 07:20 UTCJul 7, 07:55 UTC35m
2026-07-05 RSCU54 - Jul 5, 15:25 UTCJul 5, 15:35 UTC10m
2026-07-05 RSCU54 - Jul 5, 13:45 UTCJul 5, 14:00 UTC15m
2026-07-03 RSCU54 - Jul 3, 10:30 UTCJul 3, 11:15 UTC45m
2026-07-03 RSCU54 - Jul 3, 07:00 UTCJul 3, 07:35 UTC35m
2026-06-30 RSCU54 - Jun 30, 10:25 UTCJun 30, 10:55 UTC30m
2026-06-30 RSCU54 - Jun 30, 09:25 UTCJun 30, 09:35 UTC10m
2026-06-30 RSCU54 - Jun 30, 07:20 UTCJun 30, 07:55 UTC35m
2026-06-30 RSCU54 - Jun 30, 02:50 UTCJun 30, 03:25 UTC35m
2026-06-29 RSCU54 ADL → ADL Jun 29, 07:59 UTCJun 29, 08:14 UTC15m
2026-06-28 RSCU54 - Jun 28, 08:19 UTCJun 28, 08:25 UTC5m
2026-06-28 RSCU54 - Jun 28, 07:09 UTCJun 28, 07:34 UTC25m
2026-06-28 RSCU54 - Jun 28, 05:34 UTCJun 28, 06:00 UTC25m
2026-06-27 RSCU54 - Jun 27, 09:29 UTCJun 27, 09:40 UTC10m
2026-06-27 RSCU54 - Jun 27, 08:35 UTCJun 27, 09:04 UTC30m
2026-06-27 RSCU54 - Jun 27, 06:30 UTCJun 27, 07:10 UTC40m
2026-06-25 RSCU54 - Jun 25, 06:30 UTCJun 25, 06:40 UTC10m
2026-06-25 RSCU54 - Jun 25, 05:29 UTCJun 25, 05:44 UTC15m
2026-06-24 RSCU54 - Jun 24, 05:54 UTCJun 24, 06:10 UTC15m
2026-06-24 RSCU54 - Jun 24, 04:20 UTCJun 24, 04:39 UTC20m
2026-06-24 RSCU54 ADL → ADL Jun 24, 02:15 UTCJun 24, 02:40 UTC25m
2026-06-23 PXY ADL → ADL Jun 23, 06:34 UTCJun 23, 06:49 UTC15m
2026-06-23 PXY - Jun 23, 05:29 UTCJun 23, 05:39 UTC10m
2026-06-23 PXY - Jun 23, 04:19 UTCJun 23, 04:29 UTC10m
2026-05-17 RSCU54 - May 17, 01:20 UTCMay 17, 01:45 UTC25m
2026-05-16 RSCU54 - May 16, 23:35 UTCMay 17, 00:10 UTC35m
2026-05-16 RSCU54 - May 16, 08:51 UTCMay 16, 09:01 UTC10m
2026-05-16 RSCU54 - May 16, 08:11 UTCMay 16, 08:20 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-PXY page for operator, model, and routing details .

Mode-S 7C4F44 frequently asked

What is Mode-S code 7C4F44?
7C4F44 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-PXY.
Where is Mode-S 7C4F44 registered?
Mode-S code 7C4F44 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C4F44 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C4F44, octal 37047504, decimal 8,146,756.
What flights does 7C4F44 operate?
Mode-S 7C4F44 has broadcast 3 distinct callsigns, including RSCU54, POL54, PXY.