Apparatus

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sensors Mode-S transponder

7C4A55

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-OYV · BEECH 1900 · operated by JETSTAR AIRWAYS PTY LIMITED

Hex
7C4A55
Octal
37045125
Decimal
8,145,493
Country
AU
Tail
VH-OYV
Type
B190
No current signal · last broadcast 4h ago
Flights observed
145
Distinct callsigns
20
Country
AU
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 7C4A55.

Country allocation

The ICAO 24-bit address 7C4A55 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
JST564 Jetstar Airways 6 2026-06-09
JST829 Jetstar Airways 5 2026-06-09
JST828 Jetstar Airways 5 2026-06-09
JST633 Jetstar Airways 5 2026-05-21
JST565 Jetstar Airways 5 2026-06-08
JST499 Jetstar Airways 5 2026-05-10
JST498 Jetstar Airways 5 2026-05-09
JST689 Jetstar Airways 4 2026-05-10
JST688 Jetstar Airways 4 2026-05-10
JST125 Jetstar Airways 4 2026-05-02
JST049 Jetstar Airways 4 2026-05-21
JST038 Jetstar Airways 4 2026-06-02
JST965 Jetstar Airways 3 2026-06-07
JST964 Jetstar Airways 3 2026-06-07
JST632 Jetstar Airways 3 2026-05-21
JST574 Jetstar Airways 3 2026-06-09
JST573 Jetstar Airways 3 2026-06-09
JST203 Jetstar Airways 3 2026-06-01
JST801 Jetstar Airways 2 2026-06-10
JST800 Jetstar Airways 2 2026-06-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-10 JST057 BNE → DPS Jun 10, 21:50 UTCJun 11, 01:40 UTC3h 50m
2026-06-10 JST059 BNE → DPS Jun 10, 06:50 UTCJun 10, 19:45 UTC12h 55m
2026-06-10 JST801 ADL → BNE Jun 10, 00:45 UTCJun 10, 02:55 UTC2h 10m
2026-06-09 JST800 BNE → ADL Jun 9, 21:15 UTCJun 9, 23:35 UTC2h 20m
2026-06-09 JST574 MEL → BNE Jun 9, 11:45 UTCJun 9, 13:35 UTC1h 50m
2026-06-09 JST573 BNE → MEL Jun 9, 08:30 UTCJun 9, 10:30 UTC2h 0m
2026-06-09 JST828 SYD → BNE Jun 9, 06:10 UTCJun 9, 07:25 UTC1h 15m
2026-06-09 JST829 BNE → SYD Jun 9, 03:50 UTCJun 9, 05:05 UTC1h 15m
2026-06-09 JST564 MEL → BNE Jun 9, 00:30 UTCJun 9, 02:30 UTC2h 0m
2026-06-08 JST565 BNE → MEL Jun 8, 21:20 UTCJun 8, 23:25 UTC2h 5m
2026-06-08 JST574 MEL → BNE Jun 8, 11:05 UTCJun 8, 13:00 UTC1h 55m
2026-06-08 JST573 BNE → MEL Jun 8, 07:55 UTCJun 8, 10:00 UTC2h 5m
2026-06-08 JST828 SYD → BNE Jun 8, 05:40 UTCJun 8, 06:50 UTC1h 10m
2026-06-08 JST829 BNE → SYD Jun 8, 03:25 UTCJun 8, 04:30 UTC1h 5m
2026-06-08 JST564 MEL → BNE Jun 8, 01:45 UTCJun 8, 02:15 UTC30m
2026-06-08 JST564 MEL → BNE Jun 8, 00:20 UTCJun 8, 01:40 UTC1h 20m
2026-06-07 JST565 BNE → MEL Jun 7, 21:20 UTCJun 7, 23:20 UTC2h 0m
2026-06-07 JST965 PER → BNE Jun 7, 15:10 UTCJun 7, 19:20 UTC4h 10m
2026-06-07 JST964 BNE → PER Jun 7, 09:00 UTCJun 7, 13:50 UTC4h 50m
2026-06-07 JST828 SYD → BNE Jun 7, 05:55 UTCJun 7, 07:10 UTC1h 15m
2026-06-07 JST829 BNE → SYD Jun 7, 03:40 UTCJun 7, 04:55 UTC1h 15m
2026-06-07 JST564 MEL → BNE Jun 7, 00:30 UTCJun 7, 02:19 UTC1h 50m
2026-06-06 JST565 BNE → MEL Jun 6, 21:30 UTCJun 6, 23:30 UTC2h 0m
2026-06-06 JST574 MEL → BNE Jun 6, 12:20 UTCJun 6, 14:09 UTC1h 50m
2026-06-06 JST573 BNE → MEL Jun 6, 09:15 UTCJun 6, 11:09 UTC1h 55m
2026-06-06 JST828 SYD → BNE Jun 6, 06:40 UTCJun 6, 07:50 UTC1h 10m
2026-06-06 JST829 BNE → SYD Jun 6, 04:15 UTCJun 6, 05:25 UTC1h 10m
2026-06-05 JST965 PER → BNE Jun 5, 17:15 UTCJun 5, 21:10 UTC3h 55m
2026-06-05 JST964 BNE → PER Jun 5, 11:20 UTCJun 5, 16:10 UTC4h 50m
2026-06-05 JST828 SYD → BNE Jun 5, 07:20 UTCJun 5, 08:35 UTC1h 15m
2026-06-05 JST829 BNE → SYD Jun 5, 05:00 UTCJun 5, 06:05 UTC1h 5m
2026-06-05 JST564 MEL → BNE Jun 5, 00:30 UTCJun 5, 02:20 UTC1h 50m
2026-06-04 JST565 BNE → MEL Jun 4, 21:20 UTCJun 4, 23:30 UTC2h 10m
2026-06-04 JST7998 MEL → BNE Jun 4, 11:30 UTCJun 4, 13:20 UTC1h 50m
2026-06-03 JST032 DPS → MEL Jun 3, 20:35 UTCJun 4, 09:50 UTC13h 15m
2026-06-03 JST526 MEL → SYD Jun 3, 09:10 UTCJun 3, 10:10 UTC1h 0m
2026-06-03 JST523 SYD → MEL Jun 3, 06:55 UTCJun 3, 08:15 UTC1h 20m
2026-06-03 JST518 MEL → SYD Jun 3, 04:35 UTCJun 3, 05:35 UTC1h 0m
2026-06-03 JST513 SYD → MEL Jun 3, 02:25 UTCJun 3, 03:35 UTC1h 10m
2026-06-02 JST038 DPS → SYD Jun 2, 07:00 UTCJun 2, 20:15 UTC13h 15m
2026-06-02 JST204 AKL → SYD Jun 2, 01:05 UTCJun 2, 04:10 UTC3h 5m
2026-06-01 JST203 SYD → AKL Jun 1, 21:00 UTCJun 1, 23:40 UTC2h 40m
2026-06-01 JST204 AKL → SYD Jun 1, 05:55 UTCJun 1, 08:50 UTC2h 55m
2026-06-01 JST203 SYD → AKL Jun 1, 01:40 UTCJun 1, 04:25 UTC2h 45m
2026-05-31 JST038 DPS → SYD May 31, 18:40 UTCMay 31, 20:10 UTC1h 30m
2026-05-31 JST038 DPS → SYD May 31, 01:10 UTCMay 31, 20:10 UTC19h 0m
2026-05-30 JST203 SYD → AKL May 30, 20:45 UTCMay 30, 23:30 UTC2h 45m
2026-05-29 JST039 SYD → DPS May 29, 20:35 UTCMay 30, 10:05 UTC13h 30m
2026-05-28 JST119 SYD → NAN May 28, 23:40 UTCMay 29, 09:25 UTC9h 45m
2026-05-28 JST038 DPS → SYD May 28, 06:40 UTCMay 28, 20:20 UTC13h 40m

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

Mode-S 7C4A55 frequently asked

What is Mode-S code 7C4A55?
7C4A55 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-OYV.
Where is Mode-S 7C4A55 registered?
Mode-S code 7C4A55 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C4A55 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C4A55, octal 37045125, decimal 8,145,493.
What flights does 7C4A55 operate?
Mode-S 7C4A55 has broadcast 20 distinct callsigns, including JST564, JST829, JST828, JST633, JST565.