Apparatus

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sensors Mode-S transponder

7C530F

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-QOX · DE HAVILLAND DHC-8-400 Dash 8 · operated by SUNSTATE AIRLINES (QLD) PTY. LIMITED

Hex
7C530F
Octal
37051417
Decimal
8,147,727
Country
AU
Tail
VH-QOX
Type
DH8D
No current signal · last broadcast 1h ago
Flights observed
228
Distinct callsigns
20
Country
AU
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 7C530F.

Country allocation

The ICAO 24-bit address 7C530F 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
QLK83D - 6 2026-07-10
QLK82D - 6 2026-07-10
QLK59D - 5 2026-07-10
QLK551D - 4 2026-07-15
QLK50D - 4 2026-07-10
QLK497D - 4 2026-07-19
QLK98D - 3 2026-07-07
QLK97D - 3 2026-07-07
QLK92D - 3 2026-07-11
QLK91D - 3 2026-07-10
QLK88D - 3 2026-07-06
QLK87D - 3 2026-07-06
QLK5D - 3 2026-06-29
QLK561D - 3 2026-07-16
QLK560D - 3 2026-07-16
QLK4D - 3 2026-06-29
QLK498D - 3 2026-07-19
QLK455D - 3 2026-06-23
QLK42D - 3 2026-06-21
QLK227D - 3 2026-06-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-21 QLK209D - Jul 21, 09:10 UTCJul 21, 09:45 UTC35m
2026-07-21 QLK107D - Jul 21, 07:00 UTCJul 21, 08:05 UTC1h 5m
2026-07-21 QLK106D - Jul 21, 05:15 UTCJul 21, 06:10 UTC55m
2026-07-21 QLK41D - Jul 21, 03:45 UTCJul 21, 04:20 UTC35m
2026-07-21 QLK40D - Jul 21, 02:10 UTCJul 21, 02:40 UTC30m
2026-07-20 QLK402D - Jul 20, 21:25 UTCJul 20, 22:15 UTC50m
2026-07-20 QLK401D - Jul 20, 08:45 UTCJul 20, 09:25 UTC40m
2026-07-20 QLK122D - Jul 20, 05:15 UTCJul 20, 05:50 UTC35m
2026-07-20 QLK123D - Jul 20, 03:15 UTCJul 20, 03:50 UTC35m
2026-07-20 QLK204D - Jul 20, 01:15 UTCJul 20, 01:55 UTC40m
2026-07-19 QLK203D - Jul 19, 23:10 UTCJul 19, 23:55 UTC45m
2026-07-19 QLK202D - Jul 19, 21:20 UTCJul 19, 22:05 UTC45m
2026-07-19 QLK209D - Jul 19, 09:05 UTCJul 19, 09:45 UTC40m
2026-07-19 QLK169D - Jul 19, 07:00 UTCJul 19, 07:45 UTC45m
2026-07-19 QLK164D SYD → PQQ Jul 19, 05:40 UTCJul 19, 06:20 UTC40m
2026-07-19 QLK498D - Jul 19, 02:50 UTCJul 19, 04:15 UTC1h 25m
2026-07-19 QLK497D - Jul 19, 00:40 UTCJul 19, 01:55 UTC1h 15m
2026-07-18 QLK434D - Jul 18, 01:10 UTCJul 18, 01:54 UTC45m
2026-07-17 QLK431D - Jul 17, 23:55 UTCJul 18, 00:25 UTC30m
2026-07-17 QLK183D - Jul 17, 09:40 UTCJul 17, 10:44 UTC1h 5m
2026-07-17 QLK182D - Jul 17, 08:00 UTCJul 17, 08:54 UTC55m
2026-07-17 QLK38D - Jul 17, 01:55 UTCJul 17, 02:59 UTC1h 5m
2026-07-17 QLK35D SYD → BNK Jul 17, 00:04 UTCJul 17, 01:15 UTC1h 10m
2026-07-16 QLK422D - Jul 16, 21:15 UTCJul 16, 21:55 UTC40m
2026-07-16 QLK550D - Jul 16, 09:25 UTCJul 16, 11:10 UTC1h 45m
2026-07-16 QLK576D - Jul 16, 07:50 UTCJul 16, 08:30 UTC40m
2026-07-16 QLK575D - Jul 16, 06:45 UTCJul 16, 07:15 UTC30m
2026-07-16 QLK586D - Jul 16, 05:20 UTCJul 16, 06:00 UTC40m
2026-07-16 QLK585D ADL → PLO Jul 16, 04:10 UTCJul 16, 04:45 UTC35m
2026-07-16 QLK561D - Jul 16, 01:20 UTCJul 16, 01:40 UTC20m
2026-07-16 QLK560D - Jul 16, 00:25 UTCJul 16, 00:40 UTC15m
2026-07-15 QLK551D - Jul 15, 23:10 UTCJul 15, 23:35 UTC25m
2026-07-15 QLK551D - Jul 15, 21:50 UTCJul 15, 22:25 UTC35m
2026-07-15 QLK550D - Jul 15, 09:40 UTCJul 15, 11:25 UTC1h 45m
2026-07-15 QLK576D - Jul 15, 08:05 UTCJul 15, 08:40 UTC35m
2026-07-15 QLK575D - Jul 15, 06:50 UTCJul 15, 07:10 UTC20m
2026-07-15 QLK561D - Jul 15, 01:25 UTCJul 15, 02:00 UTC35m
2026-07-15 QLK560D - Jul 15, 00:25 UTCJul 15, 00:40 UTC15m
2026-07-14 QLK588D - Jul 14, 08:25 UTCJul 14, 09:05 UTC40m
2026-07-14 QLK587D ADL → PLO Jul 14, 07:10 UTCJul 14, 07:50 UTC40m
2026-07-14 QLK549D - Jul 14, 05:55 UTCJul 14, 06:15 UTC20m
2026-07-14 QLK549D - Jul 14, 04:25 UTCJul 14, 04:45 UTC20m
2026-07-14 QLK548D - Jul 14, 01:55 UTCJul 14, 03:30 UTC1h 35m
2026-07-13 QLK582D PLO → ADL Jul 13, 23:50 UTCJul 14, 00:30 UTC40m
2026-07-13 QLK581D - Jul 13, 22:35 UTCJul 13, 23:10 UTC35m
2026-07-13 QLK580D PLO → ADL Jul 13, 21:05 UTCJul 13, 21:40 UTC35m
2026-07-13 QLK589D ADL → PLO Jul 13, 09:55 UTCJul 13, 10:30 UTC35m
2026-07-13 QLK588D - Jul 13, 08:05 UTCJul 13, 08:50 UTC45m
2026-07-13 QLK587D ADL → PLO Jul 13, 06:55 UTCJul 13, 07:30 UTC35m
2026-07-13 QLK586D PLO → ADL Jul 13, 05:20 UTCJul 13, 05:50 UTC30m

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

Mode-S 7C530F frequently asked

What is Mode-S code 7C530F?
7C530F is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-QOX.
Where is Mode-S 7C530F registered?
Mode-S code 7C530F is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C530F broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C530F, octal 37051417, decimal 8,147,727.
What flights does 7C530F operate?
Mode-S 7C530F has broadcast 20 distinct callsigns, including QLK83D, QLK82D, QLK59D, QLK551D, QLK50D.