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sensors Mode-S transponder

7C3B15

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-LYF · CESSNA 172 Skyhawk · operated by MESSRS CHANTER & COMPANY PTY LIMITED

Hex
7C3B15
Octal
37035425
Decimal
8,141,589
Country
AU
Tail
VH-LYF
Type
C172
No current signal · last broadcast 3h ago
Flights observed
106
Distinct callsigns
1
Country
AU
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 7C3B15.

Country allocation

The ICAO 24-bit address 7C3B15 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
LYF - 106 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 LYF BNK → BNK Jul 14, 04:25 UTCJul 14, 06:40 UTC2h 15m
2026-07-13 LYF BNK → BNK Jul 13, 23:20 UTCJul 14, 03:45 UTC4h 25m
2026-07-13 LYF BNK → BNK Jul 13, 21:05 UTCJul 13, 22:35 UTC1h 30m
2026-07-13 LYF - Jul 13, 05:20 UTCJul 13, 06:50 UTC1h 30m
2026-07-13 LYF - Jul 13, 04:15 UTCJul 13, 04:50 UTC35m
2026-07-13 LYF - Jul 13, 02:20 UTCJul 13, 03:30 UTC1h 10m
2026-07-12 LYF - Jul 12, 23:35 UTCJul 13, 01:25 UTC1h 50m
2026-07-12 LYF BNK → BNK Jul 12, 21:20 UTCJul 12, 22:50 UTC1h 30m
2026-07-08 LYF BNK → BNK Jul 8, 21:55 UTCJul 8, 22:55 UTC1h 0m
2026-07-08 LYF - Jul 8, 03:20 UTCJul 8, 03:40 UTC20m
2026-07-08 LYF - Jul 8, 00:50 UTCJul 8, 02:00 UTC1h 10m
2026-07-07 LYF BNK → BNK Jul 7, 21:55 UTCJul 7, 23:40 UTC1h 45m
2026-07-06 LYF BNK → BNK Jul 6, 23:40 UTCJul 7, 00:00 UTC20m
2026-07-06 LYF BNK → BNK Jul 6, 21:50 UTCJul 6, 22:25 UTC35m
2026-07-02 LYF BNK → BNK Jul 2, 21:40 UTCJul 2, 22:45 UTC1h 5m
2026-07-01 LYF - Jul 1, 05:05 UTCJul 1, 05:30 UTC25m
2026-07-01 LYF - Jul 1, 02:35 UTCJul 1, 03:15 UTC40m
2026-06-30 LYF BNK → BNK Jun 30, 23:30 UTCJul 1, 01:45 UTC2h 15m
2026-06-30 LYF BNK → BNK Jun 30, 21:50 UTCJun 30, 22:55 UTC1h 5m
2026-06-30 LYF BNK → BNK Jun 30, 03:20 UTCJun 30, 04:20 UTC1h 0m
2026-06-29 LYF BNK → BNK Jun 29, 03:49 UTCJun 29, 05:09 UTC1h 20m
2026-06-29 LYF BNK → BNK Jun 29, 02:00 UTCJun 29, 02:45 UTC45m
2026-06-24 LYF - Jun 24, 02:40 UTCJun 24, 04:05 UTC1h 25m
2026-06-23 LYF - Jun 23, 23:39 UTCJun 24, 00:30 UTC50m
2026-06-23 LYF BNK → BNK Jun 23, 21:39 UTCJun 23, 23:05 UTC1h 25m
2026-06-23 LYF BNK → BNK Jun 23, 03:15 UTCJun 23, 04:14 UTC1h 0m
2026-06-23 LYF - Jun 23, 01:54 UTCJun 23, 02:09 UTC15m
2026-06-22 LYF - Jun 22, 23:14 UTCJun 23, 00:15 UTC1h 0m
2026-06-22 LYF BNK → BNK Jun 22, 21:40 UTCJun 22, 22:40 UTC1h 0m
2026-06-22 LYF - Jun 22, 05:29 UTCJun 22, 05:40 UTC10m
2026-06-22 LYF - Jun 22, 03:30 UTCJun 22, 04:15 UTC45m
2026-06-22 LYF BNK → BNK Jun 22, 01:44 UTCJun 22, 02:50 UTC1h 5m
2026-06-19 LYF - Jun 19, 03:34 UTCJun 19, 03:49 UTC15m
2026-06-19 LYF - Jun 19, 02:24 UTCJun 19, 02:39 UTC15m
2026-06-19 LYF - Jun 19, 00:10 UTCJun 19, 01:19 UTC1h 10m
2026-06-18 LYF - Jun 18, 23:05 UTCJun 18, 23:25 UTC20m
2026-06-18 LYF BNK → BNK Jun 18, 21:25 UTCJun 18, 22:20 UTC55m
2026-06-18 LYF - Jun 18, 01:20 UTCJun 18, 02:35 UTC1h 15m
2026-06-18 LYF - Jun 18, 00:20 UTCJun 18, 00:35 UTC15m
2026-06-17 LYF BNK → BNK Jun 17, 22:35 UTCJun 17, 23:30 UTC55m
2026-06-17 LYF - Jun 17, 05:00 UTCJun 17, 05:20 UTC20m
2026-06-17 LYF - Jun 17, 02:40 UTCJun 17, 03:35 UTC55m
2026-06-17 LYF - Jun 17, 01:50 UTCJun 17, 02:05 UTC15m
2026-06-16 LYF - Jun 16, 23:30 UTCJun 17, 00:30 UTC1h 0m
2026-06-16 LYF BNK → BNK Jun 16, 21:20 UTCJun 16, 22:35 UTC1h 15m
2026-06-15 LYF BNK → BNK Jun 15, 03:19 UTCJun 15, 04:34 UTC1h 15m
2026-06-15 LYF BNK → BNK Jun 15, 01:35 UTCJun 15, 02:20 UTC45m
2026-06-14 LYF BNK → BNK Jun 14, 23:15 UTCJun 14, 23:35 UTC20m
2026-06-14 LYF BNK → BNK Jun 14, 21:40 UTCJun 14, 22:30 UTC50m
2026-06-11 LYF BNK → BNK Jun 11, 22:55 UTCJun 11, 23:50 UTC55m

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

Mode-S 7C3B15 frequently asked

What is Mode-S code 7C3B15?
7C3B15 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-LYF.
Where is Mode-S 7C3B15 registered?
Mode-S code 7C3B15 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C3B15 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C3B15, octal 37035425, decimal 8,141,589.
What flights does 7C3B15 operate?
Mode-S 7C3B15 has broadcast 1 distinct callsign, including LYF.