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 2h ago
Flights observed
294
Distinct callsigns
20
Country
AU
Last broadcast
2h 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
JST089 Jetstar Airways 8 2026-07-25
JST564 - 7 2026-06-14
JST965 Jetstar Airways 6 2026-06-20
JST964 - 6 2026-06-20
JST829 Jetstar Airways 6 2026-06-14
JST828 Jetstar Airways 6 2026-06-14
JST657 - 6 2026-06-21
JST656 - 6 2026-06-21
JST565 - 6 2026-06-13
JST043 Jetstar Airways 6 2026-07-24
JST801 - 5 2026-06-21
JST800 - 5 2026-06-20
JST633 Jetstar Airways 5 2026-05-21
JST508 - 5 2026-06-30
JST505 - 5 2026-06-29
JST499 Jetstar Airways 5 2026-05-10
JST498 Jetstar Airways 5 2026-05-09
JST044 Jetstar Airways 5 2026-07-23
JST973 - 4 2026-07-11
JST970 - 4 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JST087 SIN → DPS Jul 26, 11:35 UTCJul 26, 11:45 UTC10m
2026-07-25 JST088 NTL → DPS Jul 25, 23:15 UTCJul 26, 00:10 UTC55m
2026-07-25 JST089 DPS → NTL Jul 25, 20:05 UTCJul 25, 20:50 UTC45m
2026-07-24 JST043 MEL → DPS Jul 24, 23:45 UTCJul 25, 00:55 UTC1h 10m
2026-07-23 JST044 DPS → MEL Jul 23, 23:15 UTCJul 24, 12:15 UTC13h 0m
2026-07-23 JST089 DPS → NTL Jul 23, 20:45 UTCJul 23, 21:15 UTC30m
2026-07-23 JST086 DPS → SIN Jul 23, 10:10 UTCJul 23, 10:20 UTC10m
2026-07-22 JST043 MEL → DPS Jul 22, 23:30 UTCJul 23, 00:50 UTC1h 20m
2026-07-22 JST034 - Jul 22, 17:20 UTCJul 22, 18:35 UTC1h 15m
2026-07-21 JST34 DPS → MEL Jul 21, 20:40 UTCJul 22, 04:10 UTC7h 30m
2026-07-20 JST044 DPS → MEL Jul 20, 23:15 UTCJul 21, 14:30 UTC15h 14m
2026-07-20 JST089 DPS → NTL Jul 20, 20:40 UTCJul 20, 21:20 UTC40m
2026-07-20 JST089 - Jul 20, 11:40 UTCJul 20, 11:50 UTC10m
2026-07-19 JST043 MEL → DPS Jul 19, 23:40 UTCJul 20, 00:45 UTC1h 5m
2026-07-19 JST034 MEL → MEL Jul 19, 06:05 UTCJul 19, 18:30 UTC12h 25m
2026-07-18 JST34 DPS → MEL Jul 18, 20:35 UTCJul 19, 04:25 UTC7h 50m
2026-07-17 JST032 SYD → MEL Jul 17, 20:40 UTCJul 18, 09:30 UTC12h 51m
2026-07-16 JST031 MEL → SYD Jul 16, 20:45 UTCJul 17, 10:20 UTC13h 35m
2026-07-15 JST032 MEL → MEL Jul 15, 21:00 UTCJul 16, 09:40 UTC12h 40m
2026-07-14 JST043 MEL → MEL Jul 14, 23:40 UTCJul 15, 13:05 UTC13h 25m
2026-07-14 JST036 - Jul 14, 19:55 UTCJul 14, 21:10 UTC1h 15m
2026-07-14 JST089 - Jul 14, 12:00 UTCJul 14, 12:10 UTC10m
2026-07-14 JST088 - Jul 14, 00:00 UTCJul 14, 00:50 UTC50m
2026-07-13 JST089 - Jul 13, 20:30 UTCJul 13, 21:25 UTC55m
2026-07-13 JST089 - Jul 13, 11:45 UTCJul 13, 11:55 UTC10m
2026-07-13 JST086 - Jul 13, 09:35 UTCJul 13, 09:50 UTC15m
2026-07-13 JST083 - Jul 13, 03:10 UTCJul 13, 03:20 UTC10m
2026-07-12 JST106 PER → DPS Jul 12, 12:30 UTCJul 12, 13:05 UTC35m
2026-07-12 JST974 MEL → PER Jul 12, 06:25 UTCJul 12, 10:10 UTC3h 45m
2026-07-12 JST975 PER → MEL Jul 12, 01:45 UTCJul 12, 04:50 UTC3h 5m
2026-07-11 JST972 MEL → PER Jul 11, 20:50 UTCJul 12, 00:30 UTC3h 40m
2026-07-11 JST973 PER → MEL Jul 11, 08:01 UTCJul 11, 11:05 UTC3h 5m
2026-07-11 JST970 MEL → PER Jul 11, 03:05 UTCJul 11, 06:55 UTC3h 50m
2026-07-10 JST437 - Jul 10, 23:30 UTCJul 11, 01:35 UTC2h 5m
2026-07-10 JST432 - Jul 10, 20:50 UTCJul 10, 22:30 UTC1h 40m
2026-07-10 JST971 PER → MEL Jul 10, 16:05 UTCJul 10, 19:20 UTC3h 15m
2026-07-10 JST974 MEL → PER Jul 10, 06:30 UTCJul 10, 10:10 UTC3h 40m
2026-07-10 JST975 PER → MEL Jul 10, 01:55 UTCJul 10, 05:05 UTC3h 10m
2026-07-09 JST972 MEL → PER Jul 9, 20:30 UTCJul 10, 00:15 UTC3h 45m
2026-07-09 JST675 - Jul 9, 12:55 UTCJul 9, 13:30 UTC35m
2026-07-09 JST678 - Jul 9, 04:35 UTCJul 9, 05:35 UTC1h 0m
2026-07-08 JST973 PER → MEL Jul 8, 07:55 UTCJul 8, 11:15 UTC3h 20m
2026-07-08 JST970 MEL → PER Jul 8, 02:50 UTCJul 8, 06:35 UTC3h 45m
2026-07-07 JST437 - Jul 7, 23:30 UTCJul 8, 01:35 UTC2h 5m
2026-07-07 JST432 - Jul 7, 20:45 UTCJul 7, 22:25 UTC1h 40m
2026-07-07 JST973 PER → MEL Jul 7, 08:45 UTCJul 7, 12:15 UTC3h 30m
2026-07-07 JST970 MEL → PER Jul 7, 04:05 UTCJul 7, 07:30 UTC3h 25m
2026-07-07 JST437 OOL → MEL Jul 7, 00:45 UTCJul 7, 02:50 UTC2h 5m
2026-07-06 JST432 MEL → OOL Jul 6, 20:55 UTCJul 6, 22:40 UTC1h 45m
2026-07-05 JST044 MCY → MEL Jul 5, 23:50 UTCJul 6, 12:45 UTC12h 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-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 2h 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 JST089, JST564, JST965, JST964, JST829.