Apparatus

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sensors Mode-S transponder

7C3941

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-LLF · AIRPLANE FACTORY Sling 2 · operated by LEARN TO FLY AUSTRALIA OPERATIONS PTY LTD

Hex
7C3941
Octal
37034501
Decimal
8,141,121
Country
AU
Tail
VH-LLF
Type
SLG2
No current signal · last broadcast 14d ago
Flights observed
130
Distinct callsigns
1
Country
AU
Last broadcast
14d ago

Last known position

Most recent position reported by Mode-S 7C3941.

Country allocation

The ICAO 24-bit address 7C3941 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
LLF - 130 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 LLF MBW → MBW Jul 26, 06:15 UTCJul 26, 07:10 UTC56m
2026-07-26 LLF MBW → MBW Jul 26, 04:45 UTCJul 26, 05:30 UTC45m
2026-07-26 LLF MBW → MBW Jul 26, 02:55 UTCJul 26, 03:35 UTC40m
2026-07-25 LLF MBW → MBW Jul 25, 06:00 UTCJul 25, 06:50 UTC50m
2026-07-24 LLF MBW → MBW Jul 24, 23:35 UTCJul 24, 23:50 UTC15m
2026-07-24 LLF MBW → MBW Jul 24, 06:10 UTCJul 24, 06:30 UTC20m
2026-07-24 LLF MBW → MBW Jul 24, 02:10 UTCJul 24, 02:55 UTC45m
2026-07-24 LLF MBW → MBW Jul 24, 01:00 UTCJul 24, 01:50 UTC50m
2026-07-23 LLF MBW → MBW Jul 23, 03:25 UTCJul 23, 04:00 UTC35m
2026-07-23 LLF MBW → MBW Jul 23, 01:10 UTCJul 23, 01:30 UTC20m
2026-07-23 LLF MBW → MBW Jul 23, 00:25 UTCJul 23, 00:40 UTC15m
2026-07-21 LLF MBW → MBW Jul 21, 06:10 UTCJul 21, 06:55 UTC45m
2026-07-21 LLF MBW → MBW Jul 21, 01:55 UTCJul 21, 02:25 UTC30m
2026-07-21 LLF MBW → MBW Jul 21, 01:10 UTCJul 21, 01:30 UTC20m
2026-07-20 LLF MBW → MBW Jul 20, 06:05 UTCJul 20, 06:45 UTC40m
2026-07-20 LLF MBW → MBW Jul 20, 02:10 UTCJul 20, 02:45 UTC35m
2026-07-20 LLF MBW → MBW Jul 20, 01:25 UTCJul 20, 01:50 UTC25m
2026-07-19 LLF MBW → MBW Jul 19, 05:40 UTCJul 19, 06:40 UTC1h 0m
2026-07-19 LLF MBW → MBW Jul 19, 03:30 UTCJul 19, 04:20 UTC50m
2026-07-19 LLF MBW → MBW Jul 19, 02:20 UTCJul 19, 02:40 UTC20m
2026-07-19 LLF MBW → MBW Jul 19, 00:40 UTCJul 19, 01:30 UTC50m
2026-07-18 LLF MBW → MBW Jul 18, 22:50 UTCJul 18, 23:35 UTC45m
2026-07-18 LLF MBW → MBW Jul 18, 06:30 UTCJul 18, 06:45 UTC15m
2026-07-18 LLF - Jul 18, 04:40 UTCJul 18, 05:25 UTC45m
2026-07-18 LLF MBW → MBW Jul 18, 03:15 UTCJul 18, 03:55 UTC40m
2026-07-18 LLF MBW → MBW Jul 18, 01:20 UTCJul 18, 02:00 UTC40m
2026-07-17 LLF - Jul 17, 23:35 UTCJul 18, 00:29 UTC55m
2026-07-17 LLF MBW → MBW Jul 17, 22:49 UTCJul 17, 23:14 UTC25m
2026-07-16 LLF MBW → MBW Jul 16, 06:40 UTCJul 16, 07:00 UTC20m
2026-07-16 LLF MBW → MBW Jul 16, 04:55 UTCJul 16, 05:40 UTC45m
2026-07-16 LLF MBW → MBW Jul 16, 03:35 UTCJul 16, 04:15 UTC40m
2026-07-16 LLF MBW → MBW Jul 16, 02:05 UTCJul 16, 02:45 UTC40m
2026-07-15 LLF MBW → MBW Jul 15, 06:05 UTCJul 15, 06:25 UTC20m
2026-07-15 LLF MBW → MBW Jul 15, 04:25 UTCJul 15, 04:40 UTC15m
2026-07-15 LLF MBW → MBW Jul 15, 01:50 UTCJul 15, 02:25 UTC35m
2026-07-14 LLF MBW → MBW Jul 14, 06:20 UTCJul 14, 06:35 UTC15m
2026-07-14 LLF MBW → MBW Jul 14, 04:50 UTCJul 14, 05:30 UTC40m
2026-07-14 LLF MBW → MBW Jul 14, 02:30 UTCJul 14, 02:55 UTC25m
2026-07-13 LLF MBW → MBW Jul 13, 01:50 UTCJul 13, 02:01 UTC10m
2026-07-12 LLF MBW → MBW Jul 12, 22:10 UTCJul 12, 23:05 UTC55m
2026-07-11 LLF MBW → MBW Jul 11, 23:10 UTCJul 11, 23:30 UTC20m
2026-07-11 LLF MBW → MBW Jul 11, 22:25 UTCJul 11, 22:45 UTC20m
2026-07-11 LLF MBW → MBW Jul 11, 05:25 UTCJul 11, 05:45 UTC20m
2026-07-10 LLF MBW → MBW Jul 10, 06:05 UTCJul 10, 06:45 UTC40m
2026-07-10 LLF - Jul 10, 02:40 UTCJul 10, 03:40 UTC1h 0m
2026-07-10 LLF - Jul 10, 00:45 UTCJul 10, 01:45 UTC1h 0m
2026-07-09 LLF MBW → MBW Jul 9, 23:25 UTCJul 10, 00:00 UTC35m
2026-07-09 LLF MBW → MBW Jul 9, 06:25 UTCJul 9, 07:00 UTC35m
2026-07-09 LLF MBW → MBW Jul 9, 05:10 UTCJul 9, 05:35 UTC25m
2026-07-09 LLF MBW → MBW Jul 9, 01:35 UTCJul 9, 02:20 UTC45m

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

Mode-S 7C3941 frequently asked

What is Mode-S code 7C3941?
7C3941 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-LLF.
Where is Mode-S 7C3941 registered?
Mode-S code 7C3941 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C3941 broadcasting right now?
No active broadcast right now. Last signal was 14d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C3941, octal 37034501, decimal 8,141,121.
What flights does 7C3941 operate?
Mode-S 7C3941 has broadcast 1 distinct callsign, including LLF.