Apparatus

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sensors Mode-S transponder

7C23BA

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-HCC · CESSNA 152 · operated by ROYAL AERO CLUB OF NSW INCORPORATED

Hex
7C23BA
Octal
37021672
Decimal
8,135,610
Country
AU
Tail
VH-HCC
Type
C152
Broadcasting now · callsign HCC · 1,225 ft
Flights observed
92
Distinct callsigns
1
Country
AU
Last broadcast
20m ago

Current position

7C23BA is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 7C23BA 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
HCC - 92 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 HCC - Jul 18, 02:09 UTCJul 18, 02:29 UTC20m
2026-07-16 HCC - Jul 16, 00:25 UTCJul 16, 01:55 UTC1h 30m
2026-07-15 HCC - Jul 15, 05:05 UTCJul 15, 06:20 UTC1h 15m
2026-07-15 HCC CDU → CDU Jul 15, 01:20 UTCJul 15, 02:00 UTC40m
2026-07-12 HCC CDU → CDU Jul 12, 06:45 UTCJul 12, 07:45 UTC1h 0m
2026-07-11 HCC CDU → CDU Jul 11, 21:05 UTCJul 11, 21:30 UTC25m
2026-07-11 HCC CDU → CDU Jul 11, 01:10 UTCJul 11, 01:50 UTC40m
2026-07-10 HCC CDU → CDU Jul 10, 23:25 UTCJul 11, 00:10 UTC45m
2026-07-10 HCC - Jul 10, 05:10 UTCJul 10, 05:50 UTC40m
2026-07-10 HCC CDU → CDU Jul 10, 03:00 UTCJul 10, 03:45 UTC45m
2026-07-09 HCC CDU → CDU Jul 9, 23:45 UTCJul 10, 00:25 UTC40m
2026-07-09 HCC - Jul 9, 21:40 UTCJul 9, 22:20 UTC40m
2026-07-09 HCC CDU → CDU Jul 9, 05:25 UTCJul 9, 06:00 UTC35m
2026-07-09 HCC CDU → CDU Jul 9, 03:20 UTCJul 9, 03:55 UTC35m
2026-07-09 HCC CDU → CDU Jul 9, 02:00 UTCJul 9, 02:15 UTC15m
2026-07-09 HCC CDU → CDU Jul 9, 00:25 UTCJul 9, 01:05 UTC40m
2026-07-08 HCC CDU → CDU Jul 8, 22:35 UTCJul 8, 23:35 UTC1h 0m
2026-07-08 HCC CDU → CDU Jul 8, 05:40 UTCJul 8, 06:45 UTC1h 5m
2026-07-08 HCC CDU → CDU Jul 8, 04:10 UTCJul 8, 04:35 UTC25m
2026-07-08 HCC - Jul 8, 02:15 UTCJul 8, 02:55 UTC40m
2026-07-07 HCC - Jul 7, 23:50 UTCJul 8, 00:50 UTC1h 0m
2026-07-07 HCC CDU → CDU Jul 7, 21:30 UTCJul 7, 22:15 UTC45m
2026-07-07 HCC - Jul 7, 06:10 UTCJul 7, 06:45 UTC35m
2026-07-05 HCC CDU → CDU Jul 5, 06:15 UTCJul 5, 06:35 UTC20m
2026-07-05 HCC - Jul 5, 02:40 UTCJul 5, 03:20 UTC40m
2026-07-05 HCC CDU → CDU Jul 5, 00:55 UTCJul 5, 02:05 UTC1h 10m
2026-07-04 HCC - Jul 4, 06:05 UTCJul 4, 07:25 UTC1h 20m
2026-07-04 HCC CDU → CDU Jul 4, 04:05 UTCJul 4, 04:50 UTC45m
2026-07-04 HCC CDU → CDU Jul 4, 01:35 UTCJul 4, 02:20 UTC45m
2026-07-03 HCC - Jul 3, 23:30 UTCJul 4, 00:05 UTC35m
2026-07-03 HCC CDU → CDU Jul 3, 06:25 UTCJul 3, 07:05 UTC40m
2026-07-03 HCC - Jul 3, 02:35 UTCJul 3, 03:40 UTC1h 5m
2026-07-02 HCC - Jul 2, 23:10 UTCJul 3, 00:25 UTC1h 15m
2026-07-02 HCC - Jul 2, 05:55 UTCJul 2, 07:15 UTC1h 20m
2026-07-02 HCC - Jul 2, 03:10 UTCJul 2, 04:35 UTC1h 25m
2026-07-01 HCC - Jul 1, 02:55 UTCJul 1, 03:40 UTC45m
2026-06-28 HCC CDU → CDU Jun 28, 03:05 UTCJun 28, 03:40 UTC35m
2026-06-27 HCC CDU → CDU Jun 27, 05:49 UTCJun 27, 06:19 UTC30m
2026-06-27 HCC CDU → CDU Jun 27, 03:25 UTCJun 27, 03:55 UTC30m
2026-06-27 HCC - Jun 27, 00:34 UTCJun 27, 01:09 UTC35m
2026-06-23 HCC CDU → CDU Jun 23, 05:15 UTCJun 23, 06:09 UTC55m
2026-06-23 HCC - Jun 23, 01:59 UTCJun 23, 02:45 UTC45m
2026-06-21 HCC CDU → CDU Jun 21, 04:39 UTCJun 21, 05:35 UTC55m
2026-06-21 HCC - Jun 21, 00:34 UTCJun 21, 01:19 UTC45m
2026-06-20 HCC - Jun 20, 03:09 UTCJun 20, 04:04 UTC55m
2026-06-19 HCC - Jun 19, 01:50 UTCJun 19, 02:29 UTC40m
2026-06-18 HCC - Jun 18, 06:50 UTCJun 18, 07:20 UTC30m
2026-06-18 HCC - Jun 18, 03:20 UTCJun 18, 04:05 UTC45m
2026-06-14 HCC - Jun 14, 05:25 UTCJun 14, 05:45 UTC20m
2026-06-14 HCC CDU → CDU Jun 14, 02:55 UTCJun 14, 04:05 UTC1h 10m

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

Mode-S 7C23BA frequently asked

What is Mode-S code 7C23BA?
7C23BA is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-HCC.
Where is Mode-S 7C23BA registered?
Mode-S code 7C23BA is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C23BA broadcasting right now?
Yes. Mode-S 7C23BA is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C23BA, octal 37021672, decimal 8,135,610.
What flights does 7C23BA operate?
Mode-S 7C23BA has broadcast 1 distinct callsign, including HCC.