Apparatus

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sensors Mode-S transponder

7C41FD

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-NBJ · DIAMOND DA-40 Club Star · operated by YU & GAO INVESTMENT PTY LTD

Hex
7C41FD
Octal
37040775
Decimal
8,143,357
Country
AU
Tail
VH-NBJ
Type
DA40
Broadcasting now · callsign NBJ · 1,575 ft
Flights observed
130
Distinct callsigns
1
Country
AU
Last broadcast
1h ago

Current position

7C41FD is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 7C41FD 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
NBJ - 130 2026-06-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-23 NBJ - Jun 23, 03:20 UTCJun 23, 04:14 UTC55m
2026-06-23 NBJ - Jun 23, 01:35 UTCJun 23, 02:20 UTC45m
2026-06-22 NBJ - Jun 22, 07:14 UTCJun 22, 07:30 UTC15m
2026-06-22 NBJ - Jun 22, 04:34 UTCJun 22, 05:04 UTC30m
2026-06-22 NBJ - Jun 22, 03:14 UTCJun 22, 03:24 UTC10m
2026-06-22 NBJ - Jun 22, 00:55 UTCJun 22, 01:10 UTC15m
2026-06-21 NBJ - Jun 21, 06:35 UTCJun 21, 06:55 UTC20m
2026-06-21 NBJ - Jun 21, 04:14 UTCJun 21, 04:34 UTC20m
2026-06-21 NBJ - Jun 21, 02:55 UTCJun 21, 03:30 UTC35m
2026-06-21 NBJ - Jun 21, 01:14 UTCJun 21, 01:39 UTC25m
2026-06-20 NBJ - Jun 20, 06:24 UTCJun 20, 07:09 UTC45m
2026-06-20 NBJ - Jun 20, 04:59 UTCJun 20, 05:19 UTC20m
2026-06-20 NBJ - Jun 20, 03:24 UTCJun 20, 04:04 UTC40m
2026-06-19 NBJ - Jun 19, 06:35 UTCJun 19, 07:25 UTC50m
2026-06-19 NBJ - Jun 19, 03:49 UTCJun 19, 04:54 UTC1h 5m
2026-06-19 NBJ - Jun 19, 02:54 UTCJun 19, 03:05 UTC10m
2026-06-19 NBJ - Jun 19, 00:55 UTCJun 19, 01:04 UTC10m
2026-06-18 NBJ - Jun 18, 06:30 UTCJun 18, 07:10 UTC40m
2026-06-18 NBJ - Jun 18, 00:45 UTCJun 18, 01:45 UTC1h 0m
2026-06-17 NBJ - Jun 17, 06:20 UTCJun 17, 06:40 UTC20m
2026-06-17 NBJ - Jun 17, 05:25 UTCJun 17, 05:40 UTC15m
2026-06-17 NBJ - Jun 17, 02:45 UTCJun 17, 04:00 UTC1h 15m
2026-06-15 NBJ - Jun 15, 05:04 UTCJun 15, 05:15 UTC10m
2026-06-15 NBJ - Jun 15, 00:24 UTCJun 15, 02:30 UTC2h 5m
2026-06-14 NBJ - Jun 14, 05:20 UTCJun 14, 06:10 UTC50m
2026-06-14 NBJ - Jun 14, 02:35 UTCJun 14, 03:40 UTC1h 5m
2026-06-14 NBJ - Jun 14, 00:10 UTCJun 14, 01:10 UTC1h 0m
2026-06-12 NBJ - Jun 12, 05:35 UTCJun 12, 06:10 UTC35m
2026-06-12 NBJ - Jun 12, 04:35 UTCJun 12, 04:55 UTC20m
2026-06-12 NBJ - Jun 12, 03:15 UTCJun 12, 03:25 UTC10m
2026-06-12 NBJ - Jun 12, 00:15 UTCJun 12, 00:35 UTC21m
2026-06-11 NBJ - Jun 11, 03:25 UTCJun 11, 05:10 UTC1h 45m
2026-06-11 NBJ - Jun 11, 01:10 UTCJun 11, 02:50 UTC1h 40m
2026-06-10 NBJ - Jun 10, 06:50 UTCJun 10, 07:40 UTC50m
2026-06-10 NBJ - Jun 10, 05:40 UTCJun 10, 06:15 UTC35m
2026-06-10 NBJ - Jun 10, 04:30 UTCJun 10, 04:55 UTC25m
2026-06-10 NBJ - Jun 10, 02:35 UTCJun 10, 03:10 UTC35m
2026-06-09 NBJ - Jun 9, 06:40 UTCJun 9, 06:55 UTC15m
2026-06-09 NBJ - Jun 9, 04:30 UTCJun 9, 05:05 UTC35m
2026-06-09 NBJ - Jun 9, 03:25 UTCJun 9, 03:45 UTC20m
2026-06-09 NBJ - Jun 9, 00:25 UTCJun 9, 01:10 UTC45m
2026-06-08 NBJ - Jun 8, 07:25 UTCJun 8, 07:35 UTC10m
2026-06-08 NBJ - Jun 8, 05:35 UTCJun 8, 05:50 UTC15m
2026-06-08 NBJ - Jun 8, 04:00 UTCJun 8, 04:50 UTC50m
2026-06-08 NBJ - Jun 8, 02:15 UTCJun 8, 03:15 UTC1h 0m
2026-06-07 NBJ - Jun 7, 23:55 UTCJun 8, 00:50 UTC55m
2026-06-07 NBJ - Jun 7, 07:30 UTCJun 7, 07:40 UTC10m
2026-06-07 NBJ - Jun 7, 05:35 UTCJun 7, 05:50 UTC15m
2026-06-07 NBJ - Jun 7, 01:30 UTCJun 7, 02:19 UTC50m
2026-06-06 NBJ - Jun 6, 23:39 UTCJun 7, 00:19 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-NBJ page for operator, model, and routing details .

Mode-S 7C41FD frequently asked

What is Mode-S code 7C41FD?
7C41FD is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-NBJ.
Where is Mode-S 7C41FD registered?
Mode-S code 7C41FD is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C41FD broadcasting right now?
Yes. Mode-S 7C41FD is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C41FD, octal 37040775, decimal 8,143,357.
What flights does 7C41FD operate?
Mode-S 7C41FD has broadcast 1 distinct callsign, including NBJ.