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sensors Mode-S transponder

7C7C38

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-YTM · ROBINSON R-44 Raven · operated by HARRJENN PTY. LTD.

Hex
7C7C38
Octal
37076070
Decimal
8,158,264
Country
AU
Tail
VH-YTM
Type
R44
No current signal · last broadcast 28d ago
Flights observed
40
Distinct callsigns
1
Country
AU
Last broadcast
28d ago

Last known position

Most recent position reported by Mode-S 7C7C38.

Country allocation

The ICAO 24-bit address 7C7C38 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
YTM - 40 2026-07-25

Recent flights last 40

DateFlightRouteTakeoffLandingDuration
2026-07-25 YTM - Jul 25, 06:20 UTCJul 25, 06:35 UTC15m
2026-07-25 YTM - Jul 25, 04:45 UTCJul 25, 04:55 UTC10m
2026-07-25 YTM - Jul 25, 02:05 UTCJul 25, 02:25 UTC20m
2026-07-25 YTM - Jul 25, 00:05 UTCJul 25, 00:50 UTC45m
2026-07-24 YTM - Jul 24, 22:55 UTCJul 24, 23:05 UTC10m
2026-07-24 YTM - Jul 24, 22:05 UTCJul 24, 22:20 UTC15m
2026-07-24 YTM - Jul 24, 06:50 UTCJul 24, 07:05 UTC15m
2026-07-24 YTM - Jul 24, 03:20 UTCJul 24, 03:30 UTC10m
2026-07-22 YTM - Jul 22, 03:05 UTCJul 22, 03:15 UTC10m
2026-07-22 YTM - Jul 22, 02:10 UTCJul 22, 02:20 UTC10m
2026-07-21 YTM - Jul 21, 05:55 UTCJul 21, 07:00 UTC1h 5m
2026-07-21 YTM - Jul 21, 01:50 UTCJul 21, 02:00 UTC10m
2026-07-21 YTM - Jul 21, 01:10 UTCJul 21, 01:20 UTC10m
2026-07-18 YTM - Jul 18, 06:00 UTCJul 18, 06:50 UTC50m
2026-07-18 YTM - Jul 18, 03:40 UTCJul 18, 03:50 UTC10m
2026-07-18 YTM - Jul 18, 01:34 UTCJul 18, 02:25 UTC50m
2026-07-18 YTM - Jul 18, 00:15 UTCJul 18, 00:50 UTC35m
2026-07-17 YTM - Jul 17, 06:50 UTCJul 17, 07:05 UTC15m
2026-07-17 YTM - Jul 17, 02:54 UTCJul 17, 03:10 UTC15m
2026-07-17 YTM - Jul 17, 01:39 UTCJul 17, 01:49 UTC10m
2026-07-17 YTM - Jul 17, 00:45 UTCJul 17, 01:00 UTC15m
2026-07-16 YTM - Jul 16, 04:40 UTCJul 16, 05:25 UTC45m
2026-07-16 YTM - Jul 16, 01:45 UTCJul 16, 02:00 UTC15m
2026-07-16 YTM - Jul 16, 00:10 UTCJul 16, 00:20 UTC10m
2026-07-15 YTM - Jul 15, 06:40 UTCJul 15, 06:50 UTC10m
2026-07-15 YTM - Jul 15, 05:30 UTCJul 15, 05:40 UTC10m
2026-07-11 YTM - Jul 11, 05:55 UTCJul 11, 06:05 UTC10m
2026-07-11 YTM - Jul 11, 04:01 UTCJul 11, 04:55 UTC55m
2026-07-11 YTM - Jul 11, 02:35 UTCJul 11, 03:01 UTC25m
2026-07-11 YTM - Jul 11, 01:25 UTCJul 11, 01:50 UTC25m
2026-07-11 YTM - Jul 11, 00:00 UTCJul 11, 00:45 UTC45m
2026-07-10 YTM - Jul 10, 06:45 UTCJul 10, 07:00 UTC15m
2026-07-10 YTM - Jul 10, 04:50 UTCJul 10, 05:10 UTC20m
2026-07-10 YTM - Jul 10, 01:25 UTCJul 10, 02:00 UTC35m
2026-07-09 YTM - Jul 9, 06:15 UTCJul 9, 06:30 UTC15m
2026-07-09 YTM - Jul 9, 01:20 UTCJul 9, 02:05 UTC45m
2026-07-08 YTM - Jul 8, 23:50 UTCJul 9, 00:40 UTC50m
2026-07-08 YTM - Jul 8, 06:05 UTCJul 8, 06:45 UTC40m
2026-07-08 YTM - Jul 8, 03:15 UTCJul 8, 03:40 UTC25m
2026-07-08 YTM - Jul 8, 00:55 UTCJul 8, 01:45 UTC50m

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

Mode-S 7C7C38 frequently asked

What is Mode-S code 7C7C38?
7C7C38 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-YTM.
Where is Mode-S 7C7C38 registered?
Mode-S code 7C7C38 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C7C38 broadcasting right now?
No active broadcast right now. Last signal was 28d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C7C38, octal 37076070, decimal 8,158,264.
What flights does 7C7C38 operate?
Mode-S 7C7C38 has broadcast 1 distinct callsign, including YTM.