Apparatus

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sensors Mode-S transponder

7C4A50

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-OYQ · AIRBUS A-321neo · operated by JETSTAR AIRWAYS PTY LIMITED

Hex
7C4A50
Octal
37045120
Decimal
8,145,488
Country
AU
Tail
VH-OYQ
Type
A21N
Transponder active on ground
Flights observed
140
Distinct callsigns
20
Country
AU
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 7C4A50.

Country allocation

The ICAO 24-bit address 7C4A50 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
JST814 Jetstar Airways 11 2026-05-27
JST811 Jetstar Airways 10 2026-05-27
JST657 Jetstar Airways 10 2026-05-30
JST656 Jetstar Airways 10 2026-05-30
JST057 Jetstar Airways 10 2026-05-23
JST965 Jetstar Airways 7 2026-05-28
JST964 Jetstar Airways 7 2026-05-28
JST801 Jetstar Airways 7 2026-05-29
JST800 Jetstar Airways 7 2026-05-28
JST567 Jetstar Airways 7 2026-05-28
JST566 Jetstar Airways 6 2026-05-28
JST906 Jetstar Airways 4 2026-05-29
JST101 Jetstar Airways 3 2026-04-25
JST059 Jetstar Airways 3 2026-05-01
JST824 Jetstar Airways 2 2026-05-09
JST823 Jetstar Airways 2 2026-05-09
JST756 Jetstar Airways 2 2026-05-29
JST204 Jetstar Airways 2 2026-05-17
JST203 Jetstar Airways 2 2026-05-16
JST113 - 2 2026-04-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 JST657 CBR → BNE May 30, 06:35 UTCMay 30, 07:55 UTC1h 20m
2026-05-30 JST656 BNE → CBR May 30, 04:00 UTCMay 30, 05:20 UTC1h 20m
2026-05-29 JST756 HBA → BNE May 29, 21:00 UTCMay 30, 02:55 UTC5h 55m
2026-05-29 JST906 BNE → TSV May 29, 09:05 UTCMay 29, 13:15 UTC4h 10m
2026-05-29 JST657 CBR → BNE May 29, 06:30 UTCMay 29, 08:00 UTC1h 30m
2026-05-29 JST656 BNE → CBR May 29, 04:05 UTCMay 29, 05:30 UTC1h 25m
2026-05-29 JST801 ADL → BNE May 29, 00:40 UTCMay 29, 02:40 UTC2h 0m
2026-05-28 JST800 BNE → ADL May 28, 21:20 UTCMay 28, 23:50 UTC2h 30m
2026-05-28 JST965 PER → BNE May 28, 15:45 UTCMay 28, 19:30 UTC3h 45m
2026-05-28 JST964 BNE → PER May 28, 09:20 UTCMay 28, 14:35 UTC5h 15m
2026-05-28 JST566 MEL → BNE May 28, 05:15 UTCMay 28, 07:20 UTC2h 5m
2026-05-28 JST567 BNE → MEL May 28, 02:10 UTCMay 28, 04:00 UTC1h 50m
2026-05-27 JST814 SYD → BNE May 27, 23:45 UTCMay 28, 01:05 UTC1h 20m
2026-05-27 JST811 BNE → SYD May 27, 21:10 UTCMay 27, 22:35 UTC1h 25m
2026-05-27 JST657 CBR → BNE May 27, 07:35 UTCMay 27, 09:25 UTC1h 50m
2026-05-27 JST656 BNE → CBR May 27, 05:19 UTCMay 27, 06:34 UTC1h 15m
2026-05-27 JST814 SYD → BNE May 27, 01:19 UTCMay 27, 02:44 UTC1h 25m
2026-05-26 JST811 BNE → SYD May 26, 23:05 UTCMay 27, 00:10 UTC1h 5m
2026-05-25 JST058 DPS → BNE May 25, 22:00 UTCMay 26, 11:30 UTC13h 30m
2026-05-25 JST154 AKL → BNE May 25, 05:35 UTCMay 25, 08:40 UTC3h 5m
2026-05-25 JST153 BNE → AKL May 25, 03:35 UTCMay 25, 04:05 UTC30m
2026-05-24 JST150 AKL → BNE May 24, 18:40 UTCMay 24, 21:45 UTC3h 5m
2026-05-24 JST151 SYD → CHC May 24, 13:50 UTCMay 24, 16:40 UTC2h 50m
2026-05-23 JST057 BNE → DPS May 23, 21:50 UTCMay 24, 10:40 UTC12h 50m
2026-05-23 JST657 CBR → BNE May 23, 09:15 UTCMay 23, 10:35 UTC1h 20m
2026-05-23 JST656 BNE → CBR May 23, 04:15 UTCMay 23, 05:40 UTC1h 25m
2026-05-22 JST756 HBA → BNE May 22, 20:45 UTCMay 23, 03:15 UTC6h 29m
2026-05-22 JST906 BNE → TSV May 22, 09:05 UTCMay 22, 13:10 UTC4h 5m
2026-05-22 JST657 CBR → BNE May 22, 06:35 UTCMay 22, 08:10 UTC1h 35m
2026-05-22 JST656 BNE → CBR May 22, 04:10 UTCMay 22, 05:30 UTC1h 20m
2026-05-22 JST801 ADL → BNE May 22, 00:35 UTCMay 22, 02:40 UTC2h 5m
2026-05-21 JST800 BNE → ADL May 21, 21:10 UTCMay 21, 23:35 UTC2h 25m
2026-05-21 JST965 PER → BNE May 21, 15:25 UTCMay 21, 19:30 UTC4h 5m
2026-05-21 JST964 BNE → PER May 21, 09:00 UTCMay 21, 14:00 UTC5h 0m
2026-05-21 JST566 MEL → BNE May 21, 05:30 UTCMay 21, 07:20 UTC1h 50m
2026-05-21 JST567 BNE → MEL May 21, 02:20 UTCMay 21, 04:25 UTC2h 5m
2026-05-21 JST814 SYD → BNE May 21, 00:10 UTCMay 21, 01:15 UTC1h 5m
2026-05-20 JST811 BNE → SYD May 20, 21:55 UTCMay 20, 23:05 UTC1h 10m
2026-05-20 JST057 BNE → DPS May 20, 03:20 UTCMay 20, 18:05 UTC14h 46m
2026-05-19 JST814 SYD → BNE May 19, 23:30 UTCMay 20, 00:40 UTC1h 10m
2026-05-19 JST811 BNE → SYD May 19, 21:15 UTCMay 19, 22:25 UTC1h 10m
2026-05-18 JST058 DPS → BNE May 18, 21:50 UTCMay 19, 10:35 UTC12h 45m
2026-05-17 JST057 BNE → DPS May 17, 22:15 UTCMay 18, 11:15 UTC13h 0m
2026-05-17 JST037 SYD → DPS May 17, 06:35 UTCMay 17, 19:30 UTC12h 55m
2026-05-17 JST204 AKL → SYD May 17, 01:00 UTCMay 17, 04:00 UTC3h 0m
2026-05-16 JST203 SYD → AKL May 16, 20:40 UTCMay 16, 23:25 UTC2h 45m
2026-05-15 JST031 MEL → DPS May 15, 21:40 UTCMay 16, 10:46 UTC13h 6m
2026-05-10 JQCASS MEL → MEL May 10, 21:40 UTCMay 10, 22:05 UTC25m
2026-05-10 JST916 MEL → TSV May 10, 07:15 UTCMay 10, 13:40 UTC6h 25m
2026-05-10 JST567 BNE → MEL May 10, 02:04 UTCMay 10, 04:00 UTC1h 55m

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

Mode-S 7C4A50 frequently asked

What is Mode-S code 7C4A50?
7C4A50 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-OYQ.
Where is Mode-S 7C4A50 registered?
Mode-S code 7C4A50 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C4A50 broadcasting right now?
Mode-S 7C4A50 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C4A50, octal 37045120, decimal 8,145,488.
What flights does 7C4A50 operate?
Mode-S 7C4A50 has broadcast 20 distinct callsigns, including JST814, JST811, JST657, JST656, JST057.