Apparatus

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sensors Mode-S transponder

7C1BC4

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-FRQ · CESSNA 206 Stationair · operated by BLUE SKY ADVENTURES PROPRIETARY LIMITED

Hex
7C1BC4
Octal
37015704
Decimal
8,133,572
Country
AU
Tail
VH-FRQ
Type
C206
No current signal · last broadcast Jul 26, 06:30 UTC
Flights observed
122
Distinct callsigns
1
Country
AU
Last broadcast
Jul 26, 06:30 UTC

Last known position

Most recent position reported by Mode-S 7C1BC4.

Country allocation

The ICAO 24-bit address 7C1BC4 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
VHFRQ - 122 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 VHFRQ - Jul 26, 06:15 UTCJul 26, 06:30 UTC15m
2026-07-26 VHFRQ - Jul 26, 05:25 UTCJul 26, 05:40 UTC15m
2026-07-26 VHFRQ - Jul 26, 04:35 UTCJul 26, 04:50 UTC15m
2026-07-26 VHFRQ - Jul 26, 03:05 UTCJul 26, 04:00 UTC55m
2026-07-26 VHFRQ - Jul 26, 02:20 UTCJul 26, 02:30 UTC10m
2026-07-26 VHFRQ - Jul 26, 01:30 UTCJul 26, 01:45 UTC15m
2026-07-26 VHFRQ - Jul 26, 00:45 UTCJul 26, 00:55 UTC10m
2026-07-25 VHFRQ - Jul 25, 23:55 UTCJul 26, 00:10 UTC15m
2026-07-25 VHFRQ - Jul 25, 23:10 UTCJul 25, 23:20 UTC10m
2026-07-25 VHFRQ - Jul 25, 05:45 UTCJul 25, 06:00 UTC15m
2026-07-25 VHFRQ - Jul 25, 04:20 UTCJul 25, 04:35 UTC15m
2026-07-25 VHFRQ - Jul 25, 03:25 UTCJul 25, 03:40 UTC15m
2026-07-25 VHFRQ - Jul 25, 02:30 UTCJul 25, 02:45 UTC15m
2026-07-25 VHFRQ - Jul 25, 01:30 UTCJul 25, 01:45 UTC15m
2026-07-25 VHFRQ - Jul 25, 00:40 UTCJul 25, 00:50 UTC10m
2026-07-24 VHFRQ - Jul 24, 23:50 UTCJul 25, 00:05 UTC15m
2026-07-24 VHFRQ - Jul 24, 23:00 UTCJul 24, 23:15 UTC15m
2026-07-24 VHFRQ - Jul 24, 06:25 UTCJul 24, 06:40 UTC15m
2026-07-24 VHFRQ - Jul 24, 05:30 UTCJul 24, 05:45 UTC15m
2026-07-24 VHFRQ - Jul 24, 04:35 UTCJul 24, 04:50 UTC15m
2026-07-24 VHFRQ - Jul 24, 03:40 UTCJul 24, 03:55 UTC15m
2026-07-22 VHFRQ - Jul 22, 05:00 UTCJul 22, 05:20 UTC20m
2026-07-22 VHFRQ - Jul 22, 04:10 UTCJul 22, 04:20 UTC10m
2026-07-22 VHFRQ - Jul 22, 03:10 UTCJul 22, 03:25 UTC15m
2026-07-22 VHFRQ - Jul 22, 02:10 UTCJul 22, 02:25 UTC15m
2026-07-22 VHFRQ - Jul 22, 01:15 UTCJul 22, 01:30 UTC15m
2026-07-22 VHFRQ - Jul 22, 00:15 UTCJul 22, 00:35 UTC20m
2026-07-21 VHFRQ - Jul 21, 23:25 UTCJul 21, 23:40 UTC15m
2026-07-20 VHFRQ - Jul 20, 02:35 UTCJul 20, 03:10 UTC35m
2026-07-19 VHFRQ - Jul 19, 00:55 UTCJul 19, 01:10 UTC15m
2026-07-04 VHFRQ - Jul 4, 05:40 UTCJul 4, 06:40 UTC1h 0m
2026-07-04 VHFRQ - Jul 4, 04:50 UTCJul 4, 05:05 UTC15m
2026-07-04 VHFRQ - Jul 4, 03:50 UTCJul 4, 04:05 UTC15m
2026-07-04 VHFRQ - Jul 4, 02:50 UTCJul 4, 03:05 UTC15m
2026-07-04 VHFRQ - Jul 4, 01:50 UTCJul 4, 02:10 UTC20m
2026-06-30 VHFRQ - Jun 30, 01:35 UTCJun 30, 01:55 UTC20m
2026-06-30 VHFRQ - Jun 30, 00:39 UTCJun 30, 00:55 UTC15m
2026-06-29 VHFRQ - Jun 29, 23:49 UTCJun 30, 00:04 UTC15m
2026-06-29 VHFRQ - Jun 29, 00:54 UTCJun 29, 01:10 UTC15m
2026-06-27 VHFRQ - Jun 27, 01:04 UTCJun 27, 01:19 UTC15m
2026-06-27 VHFRQ - Jun 27, 00:10 UTCJun 27, 00:25 UTC15m
2026-06-24 VHFRQ - Jun 24, 01:04 UTCJun 24, 01:14 UTC10m
2026-06-24 VHFRQ - Jun 24, 00:15 UTCJun 24, 00:30 UTC15m
2026-06-23 VHFRQ - Jun 23, 23:19 UTCJun 23, 23:34 UTC15m
2026-06-21 VHFRQ - Jun 21, 00:59 UTCJun 21, 01:14 UTC15m
2026-06-17 VHFRQ - Jun 17, 01:50 UTCJun 17, 02:05 UTC15m
2026-06-16 VHFRQ - Jun 16, 02:00 UTCJun 16, 02:09 UTC10m
2026-06-13 VHFRQ - Jun 13, 21:40 UTCJun 13, 21:50 UTC10m
2026-06-13 VHFRQ - Jun 13, 01:25 UTCJun 13, 01:45 UTC20m
2026-06-13 VHFRQ - Jun 13, 00:15 UTCJun 13, 00:30 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-FRQ page for operator, model, and routing details .

Mode-S 7C1BC4 frequently asked

What is Mode-S code 7C1BC4?
7C1BC4 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-FRQ.
Where is Mode-S 7C1BC4 registered?
Mode-S code 7C1BC4 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C1BC4 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 06:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C1BC4, octal 37015704, decimal 8,133,572.
What flights does 7C1BC4 operate?
Mode-S 7C1BC4 has broadcast 1 distinct callsign, including VHFRQ.