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sensors Mode-S transponder

7C617B

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-TJH · AGUSTA AW-139 · operated by HELICORP PTY. LTD.

Hex
7C617B
Octal
37060573
Decimal
8,151,419
Country
AU
Tail
VH-TJH
Type
A139
No current signal · last broadcast Jul 26, 02:20 UTC
Flights observed
244
Distinct callsigns
1
Country
AU
Last broadcast
Jul 26, 02:20 UTC

Last known position

Most recent position reported by Mode-S 7C617B.

Country allocation

The ICAO 24-bit address 7C617B 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
RSCU204 - 244 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RSCU204 - Jul 26, 01:50 UTCJul 26, 02:20 UTC30m
2026-07-26 RSCU204 - Jul 26, 00:15 UTCJul 26, 00:45 UTC30m
2026-07-25 RSCU204 - Jul 25, 11:15 UTCJul 25, 11:25 UTC10m
2026-07-25 RSCU204 - Jul 25, 09:40 UTCJul 25, 10:15 UTC35m
2026-07-25 RSCU204 - Jul 25, 05:25 UTCJul 25, 06:05 UTC40m
2026-07-25 RSCU204 - Jul 25, 04:20 UTCJul 25, 04:35 UTC15m
2026-07-25 RSCU204 - Jul 25, 02:50 UTCJul 25, 03:10 UTC20m
2026-07-25 RSCU204 - Jul 25, 01:30 UTCJul 25, 01:55 UTC25m
2026-07-24 RSCU204 - Jul 24, 23:20 UTCJul 24, 23:30 UTC10m
2026-07-24 RSCU204 - Jul 24, 22:10 UTCJul 24, 22:15 UTC5m
2026-07-24 RSCU204 - Jul 24, 21:20 UTCJul 24, 21:30 UTC10m
2026-07-24 RSCU204 - Jul 24, 20:10 UTCJul 24, 20:25 UTC15m
2026-07-24 RSCU204 - Jul 24, 19:20 UTCJul 24, 19:35 UTC15m
2026-07-24 RSCU204 - Jul 24, 18:00 UTCJul 24, 18:20 UTC20m
2026-07-24 RSCU204 - Jul 24, 07:40 UTCJul 24, 07:45 UTC5m
2026-07-24 RSCU204 - Jul 24, 06:15 UTCJul 24, 06:20 UTC5m
2026-07-23 RSCU204 - Jul 23, 09:15 UTCJul 23, 09:30 UTC15m
2026-07-23 RSCU204 - Jul 23, 08:05 UTCJul 23, 08:20 UTC15m
2026-07-23 RSCU204 - Jul 23, 06:35 UTCJul 23, 07:05 UTC30m
2026-07-22 RSCU204 - Jul 22, 23:15 UTCJul 22, 23:25 UTC10m
2026-07-22 RSCU204 - Jul 22, 22:20 UTCJul 22, 22:40 UTC20m
2026-07-22 RSCU204 - Jul 22, 21:05 UTCJul 22, 21:35 UTC30m
2026-07-22 RSCU204 - Jul 22, 03:45 UTCJul 22, 04:10 UTC25m
2026-07-22 RSCU204 - Jul 22, 00:15 UTCJul 22, 00:45 UTC30m
2026-07-20 RSCU204 - Jul 20, 18:20 UTCJul 20, 18:55 UTC35m
2026-07-20 RSCU204 - Jul 20, 14:05 UTCJul 20, 14:45 UTC40m
2026-07-20 RSCU204 BWU → BWU Jul 20, 07:50 UTCJul 20, 09:05 UTC1h 15m
2026-07-19 RSCU204 - Jul 19, 10:35 UTCJul 19, 10:45 UTC10m
2026-07-19 RSCU204 - Jul 19, 08:50 UTCJul 19, 09:25 UTC35m
2026-07-19 RSCU204 - Jul 19, 07:10 UTCJul 19, 07:35 UTC25m
2026-07-19 RSCU204 - Jul 19, 04:15 UTCJul 19, 06:20 UTC2h 5m
2026-07-19 RSCU204 - Jul 19, 00:55 UTCJul 19, 02:10 UTC1h 15m
2026-07-18 RSCU204 - Jul 18, 22:30 UTCJul 19, 00:00 UTC1h 30m
2026-07-18 RSCU204 - Jul 18, 12:40 UTCJul 18, 12:55 UTC15m
2026-07-18 RSCU204 - Jul 18, 11:40 UTCJul 18, 11:55 UTC15m
2026-07-18 RSCU204 - Jul 18, 10:15 UTCJul 18, 10:35 UTC20m
2026-07-18 RSCU204 BWU → BWU Jul 18, 05:40 UTCJul 18, 06:15 UTC35m
2026-07-18 RSCU204 - Jul 18, 04:20 UTCJul 18, 04:30 UTC10m
2026-07-18 RSCU204 - Jul 18, 03:15 UTCJul 18, 03:30 UTC15m
2026-07-18 RSCU204 - Jul 18, 02:00 UTCJul 18, 02:19 UTC20m
2026-07-18 RSCU204 BWU → BWU Jul 18, 01:45 UTCJul 18, 01:50 UTC5m
2026-07-17 RSCU204 SYD → BWU Jul 17, 07:05 UTCJul 17, 07:25 UTC20m
2026-07-17 RSCU204 - Jul 17, 05:45 UTCJul 17, 06:20 UTC35m
2026-07-17 RSCU204 - Jul 17, 02:25 UTCJul 17, 02:59 UTC35m
2026-07-17 RSCU204 - Jul 17, 00:04 UTCJul 17, 00:20 UTC15m
2026-07-16 RSCU204 - Jul 16, 05:30 UTCJul 16, 06:05 UTC35m
2026-07-16 RSCU204 - Jul 16, 01:20 UTCJul 16, 01:45 UTC25m
2026-07-15 RSCU204 BWU → BWU Jul 15, 15:15 UTCJul 15, 15:25 UTC10m
2026-07-15 RSCU204 RSE → BWU Jul 15, 13:25 UTCJul 15, 13:40 UTC15m
2026-07-15 RSCU204 - Jul 15, 12:50 UTCJul 15, 13:05 UTC15m

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

Mode-S 7C617B frequently asked

What is Mode-S code 7C617B?
7C617B is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-TJH.
Where is Mode-S 7C617B registered?
Mode-S code 7C617B is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C617B broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 02:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C617B, octal 37060573, decimal 8,151,419.
What flights does 7C617B operate?
Mode-S 7C617B has broadcast 1 distinct callsign, including RSCU204.