Apparatus

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sensors Mode-S transponder

7C15BF

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-EKX · SAAB 340 · operated by REGIONAL EXPRESS PTY LTD

Hex
7C15BF
Octal
37012677
Decimal
8,132,031
Country
AU
Tail
VH-EKX
Type
SF34
No current signal · last broadcast 8d ago
Flights observed
170
Distinct callsigns
20
Country
AU
Last broadcast
8d ago

Last known position

Most recent position reported by Mode-S 7C15BF.

Country allocation

The ICAO 24-bit address 7C15BF 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 20 distinct

Callsign Airline Flights Last seen
RXA2375 Regional Express 8 2026-05-09
RXA2268 Regional Express 8 2026-05-08
RXA2377 Regional Express 7 2026-05-07
RXA2356 Regional Express 7 2026-05-07
RXA4632 - 6 2026-05-15
RXA4134 - 6 2026-05-13
RXA2376 Regional Express 6 2026-05-07
RXA2358 Regional Express 6 2026-05-05
RXA4631 - 5 2026-05-15
RXA4398 Regional Express 5 2026-05-15
RXA4366 Regional Express 5 2026-05-13
RXA4351 Regional Express 5 2026-05-14
RXA2114 Regional Express 5 2026-05-08
RXA2113 Regional Express 5 2026-05-08
RXA9381 - 4 2026-04-22
RXA9380 - 4 2026-04-21
RXA4823 Regional Express 4 2026-05-14
RXA4397 Regional Express 4 2026-05-13
RXA4396 Regional Express 4 2026-05-13
RXA4367 Regional Express 4 2026-05-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-21 RXA9996 WGA → SYD May 21, 21:20 UTCMay 21, 21:30 UTC10m
2026-05-15 RXA4353 PLO → ADL May 15, 22:40 UTCMay 15, 23:15 UTC35m
2026-05-15 RXA4398 ADL → PLO May 15, 09:35 UTCMay 15, 10:20 UTC45m
2026-05-15 RXA4632 - May 15, 07:35 UTCMay 15, 08:50 UTC1h 15m
2026-05-15 RXA4631 - May 15, 06:10 UTCMay 15, 06:55 UTC45m
2026-05-15 RXA4825 BHQ → ADL May 15, 04:50 UTCMay 15, 05:30 UTC40m
2026-05-15 RXA4824 ADL → BHQ May 15, 02:55 UTCMay 15, 03:20 UTC25m
2026-05-14 RXA4351 PLO → ADL May 14, 21:50 UTCMay 14, 22:30 UTC40m
2026-05-14 RXA4398 ADL → PLO May 14, 09:45 UTCMay 14, 10:31 UTC45m
2026-05-14 RXA4632 - May 14, 07:50 UTCMay 14, 08:50 UTC1h 0m
2026-05-14 RXA4631 - May 14, 06:15 UTCMay 14, 07:05 UTC50m
2026-05-14 RXA4823 BHQ → ADL May 14, 04:00 UTCMay 14, 04:35 UTC35m
2026-05-14 RXA4822 ADL → BHQ May 14, 01:50 UTCMay 14, 02:25 UTC35m
2026-05-13 RXA4397 PLO → ADL May 13, 09:50 UTCMay 13, 10:30 UTC40m
2026-05-13 RXA4396 ADL → PLO May 13, 08:50 UTCMay 13, 09:45 UTC55m
2026-05-13 RXA4135 - May 13, 07:15 UTCMay 13, 07:55 UTC40m
2026-05-13 RXA4134 - May 13, 04:45 UTCMay 13, 05:25 UTC40m
2026-05-13 RXA4367 PLO → ADL May 13, 03:25 UTCMay 13, 04:05 UTC40m
2026-05-13 RXA4366 ADL → PLO May 13, 02:20 UTCMay 13, 03:20 UTC1h 0m
2026-05-13 RXA4357 PLO → ADL May 13, 00:10 UTCMay 13, 01:00 UTC50m
2026-05-12 RXA4356 ADL → PLO May 12, 23:01 UTCMay 13, 00:05 UTC1h 5m
2026-05-12 RXA4351 PLO → ADL May 12, 21:40 UTCMay 12, 22:55 UTC1h 15m
2026-05-12 RXA4398 ADL → PLO May 12, 09:45 UTCMay 12, 10:25 UTC40m
2026-05-12 RXA4632 - May 12, 07:45 UTCMay 12, 08:50 UTC1h 5m
2026-05-12 RXA4631 - May 12, 06:20 UTCMay 12, 07:10 UTC50m
2026-05-12 RXA4823 BHQ → ADL May 12, 04:05 UTCMay 12, 04:30 UTC25m
2026-05-11 RXA4351 PLO → ADL May 11, 21:35 UTCMay 11, 22:15 UTC40m
2026-05-11 RXA4398 ADL → PLO May 11, 09:40 UTCMay 11, 10:20 UTC40m
2026-05-11 RXA4632 ADL → ADL May 11, 06:10 UTCMay 11, 08:30 UTC2h 20m
2026-05-11 RXA4367 PLO → ADL May 11, 03:15 UTCMay 11, 03:55 UTC40m
2026-05-11 RXA4366 ADL → PLO May 11, 02:05 UTCMay 11, 03:10 UTC1h 5m
2026-05-11 RXA4125 - May 11, 00:30 UTCMay 11, 01:10 UTC40m
2026-05-10 RXA4124 - May 10, 21:59 UTCMay 10, 22:45 UTC45m
2026-05-10 RXA4377 PLO → ADL May 10, 04:50 UTCMay 10, 05:34 UTC45m
2026-05-10 RXA9901 EPR → PLO May 10, 04:00 UTCMay 10, 04:15 UTC15m
2026-05-09 RXA2375 PER → EPR May 9, 06:25 UTCMay 9, 07:05 UTC40m
2026-05-09 RXA2258 PER → MJK May 9, 03:45 UTCMay 9, 04:30 UTC45m
2026-05-08 RXA2258 PER → MJK May 8, 23:20 UTCMay 9, 00:05 UTC45m
2026-05-08 RXA2268 PER → MJK May 8, 10:09 UTCMay 8, 10:49 UTC40m
2026-05-08 RXA2268 PER → MJK May 8, 05:39 UTCMay 8, 06:25 UTC45m
2026-05-08 RXA2114 ALH → PER May 8, 02:19 UTCMay 8, 03:09 UTC50m
2026-05-08 RXA2113 PER → ALH May 8, 00:40 UTCMay 8, 01:24 UTC45m
2026-05-07 RXA2356 EPR → PER May 7, 23:14 UTCMay 7, 23:49 UTC35m
2026-05-07 RXA2377 PER → EPR May 7, 10:40 UTCMay 7, 11:15 UTC35m
2026-05-07 RXA2376 EPR → PER May 7, 09:35 UTCMay 7, 10:05 UTC30m
2026-05-07 RXA2375 PER → EPR May 7, 06:55 UTCMay 7, 07:30 UTC35m
2026-05-06 RXA2268 PER → MJK May 6, 10:45 UTCMay 6, 11:25 UTC40m
2026-05-06 RXA2268 PER → MJK May 6, 05:40 UTCMay 6, 06:25 UTC45m
2026-05-05 RXA2268 PER → MJK May 5, 10:35 UTCMay 5, 11:20 UTC45m
2026-05-05 RXA2268 PER → MJK May 5, 06:00 UTCMay 5, 06:50 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-EKX page for operator, model, and routing details .

Mode-S 7C15BF frequently asked

What is Mode-S code 7C15BF?
7C15BF is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-EKX.
Where is Mode-S 7C15BF registered?
Mode-S code 7C15BF is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C15BF broadcasting right now?
No active broadcast right now. Last signal was 8d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C15BF, octal 37012677, decimal 8,132,031.
What flights does 7C15BF operate?
Mode-S 7C15BF has broadcast 20 distinct callsigns, including RXA2375, RXA2268, RXA2377, RXA2356, RXA4632.