Apparatus

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sensors Mode-S transponder

7C44B9

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-NUZ · FOKKER 70 · operated by ALLIANCE AIRLINES PTY LIMITED

Hex
7C44B9
Octal
37042271
Decimal
8,144,057
Country
AU
Tail
VH-NUZ
Type
F70
No current signal · last broadcast 11h ago
Flights observed
24
Distinct callsigns
13
Country
AU
Last broadcast
11h ago

Last known position

Most recent position reported by Mode-S 7C44B9.

Country allocation

The ICAO 24-bit address 7C44B9 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 13 distinct

Callsign Airline Flights Last seen
VOZ1239 Virgin Australia 4 2026-04-17
VOZ1265 Virgin Australia 3 2026-04-17
VOZ1240 Virgin Australia 3 2026-04-17
VOZ1712 Virgin Australia 2 2026-04-18
VOZ1266 Virgin Australia 2 2026-04-17
VOZ1243 Virgin Australia 2 2026-04-18
UTY2835 - 2 2026-04-13
VOZ1720 Virgin Australia 1 2026-04-15
VOZ1715 Virgin Australia 1 2026-04-15
VOZ1709 Virgin Australia 1 2026-04-17
VOZ1258 Virgin Australia 1 2026-04-14
VOZ1255 Virgin Australia 1 2026-04-14
VOZ1246 Virgin Australia 1 2026-04-18

Recent flights last 24

DateFlightRouteTakeoffLandingDuration
2026-04-18 VOZ1246 ROK → BNE Apr 18, 05:25 UTCApr 18, 05:55 UTC30m
2026-04-18 VOZ1243 BNE → ROK Apr 18, 03:25 UTCApr 18, 03:45 UTC20m
2026-04-18 VOZ1243 BNE → ROK Apr 18, 03:10 UTCApr 18, 03:20 UTC10m
2026-04-18 VOZ1712 GLT → BNE Apr 18, 01:25 UTCApr 18, 01:40 UTC15m
2026-04-18 VOZ1712 GLT → BNE Apr 18, 01:10 UTCApr 18, 01:20 UTC10m
2026-04-17 VOZ1709 BNE → GLT Apr 17, 22:45 UTCApr 17, 23:20 UTC35m
2026-04-17 VOZ1266 EMD → BNE Apr 17, 07:25 UTCApr 17, 08:05 UTC40m
2026-04-17 VOZ1265 BNE → EMD Apr 17, 05:20 UTCApr 17, 05:30 UTC10m
2026-04-17 VOZ1265 BNE → EMD Apr 17, 04:50 UTCApr 17, 05:15 UTC25m
2026-04-17 VOZ1240 ROK → BNE Apr 17, 03:20 UTCApr 17, 03:50 UTC30m
2026-04-17 VOZ1239 BNE → ROK Apr 17, 01:20 UTCApr 17, 03:15 UTC1h 55m
2026-04-17 VOZ1239 BNE → ROK Apr 17, 01:04 UTCApr 17, 01:15 UTC10m
2026-04-16 VOZ1266 EMD → BNE Apr 16, 07:39 UTCApr 16, 08:15 UTC35m
2026-04-16 VOZ1265 BNE → EMD Apr 16, 05:09 UTCApr 16, 05:49 UTC40m
2026-04-16 VOZ1240 ROK → BNE Apr 16, 03:30 UTCApr 16, 04:04 UTC35m
2026-04-16 VOZ1239 BNE → ROK Apr 16, 01:20 UTCApr 16, 01:50 UTC30m
2026-04-15 VOZ1720 GLT → BNE Apr 15, 07:50 UTCApr 15, 08:30 UTC40m
2026-04-15 VOZ1715 BNE → GLT Apr 15, 05:50 UTCApr 15, 06:25 UTC35m
2026-04-15 VOZ1240 ROK → BNE Apr 15, 03:15 UTCApr 15, 03:50 UTC35m
2026-04-15 VOZ1239 BNE → ROK Apr 15, 01:10 UTCApr 15, 01:45 UTC35m
2026-04-14 VOZ1258 EMD → BNE Apr 14, 23:25 UTCApr 15, 00:00 UTC35m
2026-04-14 VOZ1255 BNE → EMD Apr 14, 21:00 UTCApr 14, 21:35 UTC35m
2026-04-13 UTY2835 - Apr 13, 00:20 UTCApr 13, 00:40 UTC20m
2026-04-13 UTY2835 - Apr 13, 00:00 UTCApr 13, 00:40 UTC40m

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

Mode-S 7C44B9 frequently asked

What is Mode-S code 7C44B9?
7C44B9 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-NUZ.
Where is Mode-S 7C44B9 registered?
Mode-S code 7C44B9 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C44B9 broadcasting right now?
No active broadcast right now. Last signal was 11h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C44B9, octal 37042271, decimal 8,144,057.
What flights does 7C44B9 operate?
Mode-S 7C44B9 has broadcast 13 distinct callsigns, including VOZ1239, VOZ1265, VOZ1240, VOZ1712, VOZ1266.