Apparatus

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sensors Mode-S transponder

7C495B

ICAO 24-bit transponder address · allocated to Australia

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

Hex
7C495B
Octal
37044533
Decimal
8,145,243
Country
AU
Tail
VH-ORX
Type
SF34
No current signal · last broadcast 2h ago
Flights observed
189
Distinct callsigns
20
Country
AU
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 7C495B.

Country allocation

The ICAO 24-bit address 7C495B 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
RXA6469 Regional Express 16 2026-06-03
RXA6463 Regional Express 10 2026-06-03
RXA6681 Regional Express 7 2026-06-09
RXA6674 - 7 2026-06-19
RXA6661 Regional Express 6 2026-06-12
RXA6133 Regional Express 6 2026-06-12
RXA6588 Regional Express 5 2026-05-27
RXA6561 Regional Express 5 2026-05-27
RXA6776 Regional Express 4 2026-05-19
RXA6668 Regional Express 4 2026-06-12
RXA6658 Regional Express 4 2026-06-04
RXA6477 Regional Express 4 2026-06-10
RXA6454 Regional Express 4 2026-06-10
RXA6362 Regional Express 4 2026-05-26
RXA6117 Regional Express 4 2026-05-30
RXA6869 Regional Express 3 2026-06-01
RXA6866 Regional Express 3 2026-06-01
RXA6852 Regional Express 3 2026-06-01
RXA6829 Regional Express 3 2026-05-25
RXA6828 Regional Express 3 2026-05-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-19 RXA6673 SYD → WGA Jun 19, 08:44 UTCJun 19, 09:30 UTC45m
2026-06-19 RXA6674 - Jun 19, 07:25 UTCJun 19, 08:24 UTC1h 0m
2026-06-19 RXA3268 - Jun 19, 03:39 UTCJun 19, 04:19 UTC40m
2026-06-19 RXA3764 - Jun 19, 02:14 UTCJun 19, 02:59 UTC45m
2026-06-19 RXA3763 - Jun 19, 00:45 UTCJun 19, 01:34 UTC50m
2026-06-18 RXA3752 - Jun 18, 21:15 UTCJun 18, 22:10 UTC55m
2026-06-18 RXA4643 - Jun 18, 09:45 UTCJun 18, 10:30 UTC45m
2026-06-18 RXA4125 - Jun 18, 00:20 UTCJun 18, 00:55 UTC35m
2026-06-17 RXA4124 - Jun 17, 21:55 UTCJun 17, 22:40 UTC45m
2026-06-17 RXA4397 - Jun 17, 11:00 UTCJun 17, 11:35 UTC35m
2026-06-17 RXA4396 ADL → PLO Jun 17, 10:00 UTCJun 17, 10:55 UTC55m
2026-06-17 RXA9381 - Jun 17, 01:05 UTCJun 17, 01:45 UTC40m
2026-06-16 RXA9380 - Jun 16, 20:45 UTCJun 16, 21:30 UTC45m
2026-06-16 RXA9383 - Jun 16, 08:15 UTCJun 16, 08:55 UTC40m
2026-06-16 RXA9382 - Jun 16, 03:45 UTCJun 16, 04:35 UTC50m
2026-06-16 RXA9381 - Jun 16, 01:25 UTCJun 16, 02:09 UTC45m
2026-06-15 RXA9380 - Jun 15, 20:30 UTCJun 15, 21:14 UTC45m
2026-06-15 RXA4367 PLO → ADL Jun 15, 04:55 UTCJun 15, 05:35 UTC40m
2026-06-15 RXA4366 ADL → PLO Jun 15, 03:10 UTCJun 15, 03:55 UTC45m
2026-06-15 RXA4618 - Jun 15, 01:04 UTCJun 15, 02:10 UTC1h 5m
2026-06-14 RXA4617 - Jun 14, 23:35 UTCJun 15, 00:20 UTC45m
2026-06-14 RXA4612 - Jun 14, 21:35 UTCJun 14, 22:30 UTC55m
2026-06-14 RXA3783 - Jun 14, 09:00 UTCJun 14, 09:50 UTC50m
2026-06-14 RXA3772 - Jun 14, 06:50 UTCJun 14, 07:50 UTC1h 0m
2026-06-14 RXA3771 - Jun 14, 05:25 UTCJun 14, 06:10 UTC45m
2026-06-14 RXA3273 WGA → MEL Jun 14, 03:40 UTCJun 14, 04:30 UTC50m
2026-06-12 RXA6661 SYD → WGA Jun 12, 23:45 UTCJun 13, 00:30 UTC45m
2026-06-12 RXA6114 MIM → SYD Jun 12, 20:55 UTCJun 12, 22:20 UTC1h 25m
2026-06-12 RXA6139 SYD → MYA Jun 12, 09:30 UTCJun 12, 10:30 UTC1h 0m
2026-06-12 RXA6133 MIM → MYA Jun 12, 06:05 UTCJun 12, 07:30 UTC1h 25m
2026-06-12 RXA6133 MIM → MYA Jun 12, 04:30 UTCJun 12, 05:15 UTC45m
2026-06-12 RXA6668 WGA → SYD Jun 12, 03:00 UTCJun 12, 03:45 UTC45m
2026-06-10 RXA6661 SYD → WGA Jun 10, 23:35 UTCJun 11, 00:20 UTC45m
2026-06-10 RXA6454 GFF → SYD Jun 10, 21:50 UTCJun 10, 22:45 UTC55m
2026-06-10 RXA6477 SYD → GFF Jun 10, 09:25 UTCJun 10, 10:15 UTC50m
2026-06-10 RXA6674 WGA → SYD Jun 10, 07:20 UTCJun 10, 08:10 UTC50m
2026-06-09 RXA6681 SYD → WGA Jun 9, 09:05 UTCJun 9, 09:50 UTC45m
2026-06-09 RXA6674 WGA → SYD Jun 9, 07:30 UTCJun 9, 08:15 UTC45m
2026-06-08 RXA3258 MEL → WGA Jun 8, 23:40 UTCJun 9, 00:35 UTC55m
2026-06-08 RXA3752 - Jun 8, 21:55 UTCJun 8, 23:20 UTC1h 25m
2026-06-08 RXA3783 - Jun 8, 11:15 UTCJun 8, 12:00 UTC45m
2026-06-08 RXA3281 WGA → MEL Jun 8, 09:30 UTCJun 8, 11:05 UTC1h 35m
2026-06-05 RXA6681 SYD → WGA Jun 5, 09:10 UTCJun 5, 09:55 UTC45m
2026-06-05 RXA6674 WGA → SYD Jun 5, 07:30 UTCJun 5, 08:15 UTC45m
2026-06-05 RXA6673 SYD → WGA Jun 5, 05:30 UTCJun 5, 06:20 UTC50m
2026-06-05 RXA6668 WGA → SYD Jun 5, 03:00 UTCJun 5, 03:45 UTC45m
2026-06-05 RXA6661 SYD → WGA Jun 5, 00:00 UTCJun 5, 00:45 UTC45m
2026-06-04 RXA6658 WGA → SYD Jun 4, 22:15 UTCJun 4, 22:55 UTC40m
2026-06-04 RXA6681 SYD → WGA Jun 4, 09:35 UTCJun 4, 10:20 UTC45m
2026-06-04 RXA6674 WGA → SYD Jun 4, 07:55 UTCJun 4, 08:45 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-ORX page for operator, model, and routing details .

Mode-S 7C495B frequently asked

What is Mode-S code 7C495B?
7C495B is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-ORX.
Where is Mode-S 7C495B registered?
Mode-S code 7C495B is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C495B broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C495B, octal 37044533, decimal 8,145,243.
What flights does 7C495B operate?
Mode-S 7C495B has broadcast 20 distinct callsigns, including RXA6469, RXA6463, RXA6681, RXA6674, RXA6661.