Apparatus

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sensors Mode-S transponder

7C355D

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-KTR · CESSNA 172 Skyhawk · operated by ROYAL AERO CLUB OF WESTERN AUSTRALIA

Hex
7C355D
Octal
37032535
Decimal
8,140,125
Country
AU
Tail
VH-KTR
Type
C172
No current signal · last broadcast Jul 24, 07:30 UTC
Flights observed
151
Distinct callsigns
1
Country
AU
Last broadcast
Jul 24, 07:30 UTC

Last known position

Most recent position reported by Mode-S 7C355D.

Country allocation

The ICAO 24-bit address 7C355D 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
KTR - 151 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 KTR - Jul 24, 06:45 UTCJul 24, 07:25 UTC40m
2026-07-24 KTR - Jul 24, 05:20 UTCJul 24, 05:50 UTC30m
2026-07-24 KTR JAD → JAD Jul 24, 03:40 UTCJul 24, 04:10 UTC30m
2026-07-23 KTR - Jul 23, 07:25 UTCJul 23, 07:55 UTC30m
2026-07-23 KTR - Jul 23, 05:35 UTCJul 23, 06:10 UTC35m
2026-07-23 KTR - Jul 23, 02:40 UTCJul 23, 03:00 UTC20m
2026-07-23 KTR - Jul 23, 00:50 UTCJul 23, 01:50 UTC1h 0m
2026-07-19 KTR - Jul 19, 07:50 UTCJul 19, 08:20 UTC30m
2026-07-19 KTR - Jul 19, 05:25 UTCJul 19, 05:50 UTC25m
2026-07-19 KTR - Jul 19, 03:55 UTCJul 19, 04:05 UTC10m
2026-07-19 KTR JAD → RTS Jul 19, 01:10 UTCJul 19, 01:25 UTC15m
2026-07-15 KTR - Jul 15, 08:35 UTCJul 15, 09:05 UTC30m
2026-07-15 KTR - Jul 15, 06:35 UTCJul 15, 06:55 UTC20m
2026-07-15 KTR JAD → JAD Jul 15, 01:00 UTCJul 15, 02:20 UTC1h 20m
2026-07-14 KTR - Jul 14, 08:10 UTCJul 14, 08:40 UTC30m
2026-07-14 KTR - Jul 14, 06:00 UTCJul 14, 06:25 UTC25m
2026-07-14 KTR - Jul 14, 02:25 UTCJul 14, 02:50 UTC25m
2026-07-14 KTR - Jul 14, 00:55 UTCJul 14, 01:30 UTC35m
2026-07-13 KTR JAD → JAD Jul 13, 06:25 UTCJul 13, 07:50 UTC1h 25m
2026-07-13 KTR JAD → JAD Jul 13, 04:25 UTCJul 13, 05:05 UTC40m
2026-07-13 KTR - Jul 13, 03:01 UTCJul 13, 03:20 UTC20m
2026-07-13 KTR - Jul 13, 01:20 UTCJul 13, 01:55 UTC35m
2026-07-12 KTR BUY → JAD Jul 12, 06:45 UTCJul 12, 08:15 UTC1h 30m
2026-07-12 KTR - Jul 12, 05:45 UTCJul 12, 06:05 UTC20m
2026-07-12 KTR JAD → BQB Jul 12, 01:55 UTCJul 12, 03:05 UTC1h 10m
2026-07-09 KTR JAD → JAD Jul 9, 01:35 UTCJul 9, 02:15 UTC40m
2026-07-08 KTR JAD → JAD Jul 8, 11:40 UTCJul 8, 13:00 UTC1h 20m
2026-07-08 KTR JAD → JAD Jul 8, 11:10 UTCJul 8, 11:30 UTC20m
2026-07-08 KTR - Jul 8, 07:20 UTCJul 8, 08:15 UTC55m
2026-07-08 KTR - Jul 8, 06:10 UTCJul 8, 06:30 UTC20m
2026-07-08 KTR JAD → JAD Jul 8, 04:10 UTCJul 8, 04:55 UTC45m
2026-07-08 KTR JAD → JAD Jul 8, 00:55 UTCJul 8, 02:40 UTC1h 45m
2026-07-07 KTR JAD → JAD Jul 7, 10:15 UTCJul 7, 10:50 UTC35m
2026-07-07 KTR - Jul 7, 05:15 UTCJul 7, 06:10 UTC55m
2026-07-07 KTR JAD → JAD Jul 7, 03:45 UTCJul 7, 04:05 UTC20m
2026-07-06 KTR JAD → JAD Jul 6, 01:10 UTCJul 6, 02:05 UTC55m
2026-07-05 KTR JAD → JAD Jul 5, 00:20 UTCJul 5, 02:20 UTC2h 0m
2026-07-04 KTR - Jul 4, 03:50 UTCJul 4, 04:15 UTC25m
2026-07-04 KTR - Jul 4, 02:30 UTCJul 4, 02:50 UTC20m
2026-07-03 KTR JAD → JAD Jul 3, 11:00 UTCJul 3, 11:20 UTC20m
2026-07-03 KTR JAD → JAD Jul 3, 07:15 UTCJul 3, 07:55 UTC40m
2026-07-02 KTR - Jul 2, 02:35 UTCJul 2, 03:20 UTC45m
2026-07-01 KTR JAD → JAD Jul 1, 03:00 UTCJul 1, 03:50 UTC50m
2026-06-25 KTR JAD → JAD Jun 25, 07:05 UTCJun 25, 07:39 UTC35m
2026-06-24 KTR - Jun 24, 08:39 UTCJun 24, 09:24 UTC45m
2026-06-24 KTR JAD → JAD Jun 24, 07:10 UTCJun 24, 07:54 UTC45m
2026-06-24 KTR JAD → JAD Jun 24, 01:14 UTCJun 24, 03:29 UTC2h 15m
2026-06-23 KTR JAD → JAD Jun 23, 07:19 UTCJun 23, 08:04 UTC45m
2026-06-23 KTR JAD → JAD Jun 23, 03:39 UTCJun 23, 04:25 UTC45m
2026-06-23 KTR JAD → JAD Jun 23, 00:54 UTCJun 23, 01:30 UTC35m

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

Mode-S 7C355D frequently asked

What is Mode-S code 7C355D?
7C355D is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-KTR.
Where is Mode-S 7C355D registered?
Mode-S code 7C355D is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C355D broadcasting right now?
No active broadcast right now. Last signal was Jul 24, 07:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C355D, octal 37032535, decimal 8,140,125.
What flights does 7C355D operate?
Mode-S 7C355D has broadcast 1 distinct callsign, including KTR.