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sensors Mode-S transponder

7C443F

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-NRL · PIPER PA-28-140/150/160/180 · operated by SIANO, Sarah

Hex
7C443F
Octal
37042077
Decimal
8,143,935
Country
AU
Tail
VH-NRL
Type
P28A
No current signal · last broadcast 1d ago
Flights observed
123
Distinct callsigns
1
Country
AU
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 7C443F.

Country allocation

The ICAO 24-bit address 7C443F 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
NRL - 123 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 NRL BWU → BWU Jul 16, 02:30 UTCJul 16, 03:40 UTC1h 10m
2026-07-15 NRL BWU → BWU Jul 15, 22:50 UTCJul 15, 23:40 UTC50m
2026-07-15 NRL BWU → BWU Jul 15, 00:30 UTCJul 15, 01:50 UTC1h 20m
2026-07-13 NRL BWU → BWU Jul 13, 23:50 UTCJul 14, 02:00 UTC2h 10m
2026-07-09 NRL - Jul 9, 23:20 UTCJul 9, 23:50 UTC30m
2026-07-09 NRL BWU → BWU Jul 9, 22:50 UTCJul 9, 23:00 UTC10m
2026-07-09 NRL - Jul 9, 05:10 UTCJul 9, 05:45 UTC35m
2026-07-09 NRL BWU → BWU Jul 9, 03:55 UTCJul 9, 04:30 UTC35m
2026-07-09 NRL BWU → BWU Jul 9, 02:00 UTCJul 9, 02:40 UTC40m
2026-07-06 NRL BWU → BWU Jul 6, 23:40 UTCJul 6, 23:55 UTC15m
2026-07-05 NRL BWU → BWU Jul 5, 04:45 UTCJul 5, 05:30 UTC45m
2026-07-05 NRL BWU → BWU Jul 5, 00:50 UTCJul 5, 01:05 UTC15m
2026-07-04 NRL - Jul 4, 04:50 UTCJul 4, 05:45 UTC55m
2026-07-04 NRL BWU → BWU Jul 4, 04:20 UTCJul 4, 04:25 UTC5m
2026-07-04 NRL BWU → BWU Jul 4, 02:10 UTCJul 4, 02:50 UTC40m
2026-07-03 NRL BWU → BWU Jul 3, 21:55 UTCJul 4, 00:30 UTC2h 35m
2026-07-02 NRL BWU → BWU Jul 2, 05:05 UTCJul 2, 05:45 UTC40m
2026-07-01 NRL - Jul 1, 02:40 UTCJul 1, 04:05 UTC1h 25m
2026-06-30 NRL BWU → BWU Jun 30, 03:25 UTCJun 30, 05:15 UTC1h 50m
2026-06-30 NRL BWU → BWU Jun 30, 02:15 UTCJun 30, 02:30 UTC15m
2026-06-29 NRL BWU → BWU Jun 29, 05:45 UTCJun 29, 06:14 UTC30m
2026-06-25 NRL BWU → BWU Jun 25, 23:44 UTCJun 26, 01:54 UTC2h 10m
2026-06-19 NRL BWU → BWU Jun 19, 22:19 UTCJun 19, 23:25 UTC1h 5m
2026-06-18 NRL BWU → BWU Jun 18, 04:25 UTCJun 18, 05:30 UTC1h 5m
2026-06-18 NRL BWU → BWU Jun 18, 00:35 UTCJun 18, 02:10 UTC1h 35m
2026-06-17 NRL BWU → BWU Jun 17, 04:35 UTCJun 17, 06:25 UTC1h 50m
2026-06-16 NRL BWU → BWU Jun 16, 22:05 UTCJun 16, 22:55 UTC50m
2026-06-16 NRL BWU → BWU Jun 16, 05:20 UTCJun 16, 06:30 UTC1h 10m
2026-06-14 NRL - Jun 14, 03:20 UTCJun 14, 05:15 UTC1h 55m
2026-06-13 NRL BWU → BWU Jun 13, 04:50 UTCJun 13, 06:30 UTC1h 40m
2026-06-13 NRL - Jun 13, 02:45 UTCJun 13, 03:25 UTC40m
2026-06-12 NRL - Jun 12, 00:55 UTCJun 12, 01:30 UTC35m
2026-06-12 NRL BWU → BWU Jun 12, 00:35 UTCJun 12, 00:40 UTC5m
2026-06-11 NRL BWU → BWU Jun 11, 04:50 UTCJun 11, 06:50 UTC2h 0m
2026-06-11 NRL BWU → BWU Jun 11, 01:45 UTCJun 11, 03:15 UTC1h 30m
2026-06-10 NRL BWU → BWU Jun 10, 04:35 UTCJun 10, 06:30 UTC1h 55m
2026-06-10 NRL BWU → BWU Jun 10, 00:50 UTCJun 10, 02:45 UTC1h 55m
2026-06-09 NRL - Jun 9, 05:45 UTCJun 9, 06:30 UTC45m
2026-06-09 NRL BWU → BWU Jun 9, 04:10 UTCJun 9, 05:00 UTC50m
2026-06-08 NRL BWU → BWU Jun 8, 23:20 UTCJun 9, 00:05 UTC45m
2026-06-08 NRL BWU → BWU Jun 8, 01:40 UTCJun 8, 02:20 UTC40m
2026-06-07 NRL - Jun 7, 05:05 UTCJun 7, 06:05 UTC1h 0m
2026-06-07 NRL - Jun 7, 03:10 UTCJun 7, 04:05 UTC55m
2026-06-06 NRL - Jun 6, 23:44 UTCJun 7, 00:19 UTC35m
2026-06-06 NRL - Jun 6, 22:15 UTCJun 6, 23:00 UTC45m
2026-06-06 NRL - Jun 6, 04:25 UTCJun 6, 05:10 UTC45m
2026-06-06 NRL - Jun 6, 03:00 UTCJun 6, 03:45 UTC45m
2026-06-05 NRL BWU → BWU Jun 5, 23:05 UTCJun 6, 00:50 UTC1h 45m
2026-06-04 NRL BWU → BWU Jun 4, 22:00 UTCJun 4, 23:15 UTC1h 15m
2026-06-04 NRL BWU → BWU Jun 4, 04:05 UTCJun 4, 05:20 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-NRL page for operator, model, and routing details .

Mode-S 7C443F frequently asked

What is Mode-S code 7C443F?
7C443F is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-NRL.
Where is Mode-S 7C443F registered?
Mode-S code 7C443F is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C443F 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 7C443F, octal 37042077, decimal 8,143,935.
What flights does 7C443F operate?
Mode-S 7C443F has broadcast 1 distinct callsign, including NRL.