Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

7C39F5

ICAO 24-bit transponder address · allocated to Australia

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

Hex
7C39F5
Octal
37034765
Decimal
8,141,301
Country
AU
Tail
VH-LQF
Type
DH8D
Transponder active on ground
Flights observed
490
Distinct callsigns
20
Country
AU
Last broadcast
Jul 26, 08:25 UTC

Last known position

Most recent position reported by Mode-S 7C39F5.

Country allocation

The ICAO 24-bit address 7C39F5 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
QLK454D - 7 2026-07-20
QLK354D - 6 2026-07-15
QLK581D - 5 2026-04-17
QLK580D - 5 2026-04-17
QLK455D - 5 2026-07-20
QLK386D - 5 2026-07-21
QLK355D - 5 2026-07-08
QLK204D - 5 2026-06-01
QLK203D - 5 2026-05-31
QLK105D - 5 2026-05-22
QLK104D - 5 2026-05-22
QLK96D - 4 2026-07-26
QLK95D - 4 2026-07-26
QLK589D - 4 2026-04-17
QLK587D - 4 2026-04-18
QLK582D - 4 2026-04-18
QLK547D - 4 2026-07-16
QLK451D - 4 2026-07-15
QLK450D - 4 2026-07-15
QLK449D - 4 2026-05-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 QLK96D - Jul 26, 07:30 UTCJul 26, 08:20 UTC50m
2026-07-26 QLK95D - Jul 26, 05:40 UTCJul 26, 06:20 UTC40m
2026-07-26 QLK79D - Jul 26, 00:45 UTCJul 26, 01:15 UTC30m
2026-07-25 QLK78D - Jul 25, 22:45 UTCJul 25, 23:10 UTC25m
2026-07-25 QLK77D - Jul 25, 21:10 UTCJul 25, 21:40 UTC30m
2026-07-25 QLK76D - Jul 25, 09:05 UTCJul 25, 09:35 UTC30m
2026-07-25 QLK96D - Jul 25, 07:30 UTCJul 25, 08:10 UTC40m
2026-07-25 QLK95D - Jul 25, 05:25 UTCJul 25, 06:00 UTC35m
2026-07-25 QLK94D - Jul 25, 03:55 UTCJul 25, 04:30 UTC35m
2026-07-25 QLK93D - Jul 25, 02:10 UTCJul 25, 02:45 UTC35m
2026-07-25 QLK52D - Jul 25, 00:30 UTCJul 25, 01:10 UTC40m
2026-07-24 QLK51D - Jul 24, 22:30 UTCJul 24, 23:10 UTC40m
2026-07-24 QLK98D - Jul 24, 21:05 UTCJul 24, 21:45 UTC40m
2026-07-24 QLK97D - Jul 24, 09:55 UTCJul 24, 10:35 UTC40m
2026-07-24 QLK96D - Jul 24, 08:10 UTCJul 24, 08:45 UTC35m
2026-07-24 QLK95D - Jul 24, 06:05 UTCJul 24, 06:50 UTC45m
2026-07-24 QLK56D - Jul 24, 04:10 UTCJul 24, 04:50 UTC40m
2026-07-24 QLK55D - Jul 24, 02:30 UTCJul 24, 03:05 UTC35m
2026-07-24 QLK79D - Jul 24, 00:50 UTCJul 24, 01:30 UTC40m
2026-07-23 QLK78D - Jul 23, 22:55 UTCJul 23, 23:20 UTC25m
2026-07-23 QLK77D - Jul 23, 21:15 UTCJul 23, 21:50 UTC35m
2026-07-23 QLK401D - Jul 23, 08:35 UTCJul 23, 09:15 UTC40m
2026-07-23 QLK498D - Jul 23, 04:15 UTCJul 23, 05:20 UTC1h 5m
2026-07-23 QLK497D - Jul 23, 02:05 UTCJul 23, 03:20 UTC1h 15m
2026-07-22 QLK36D BNK → SYD Jul 22, 21:55 UTCJul 22, 23:05 UTC1h 10m
2026-07-22 QLK171D - Jul 22, 05:00 UTCJul 22, 05:25 UTC25m
2026-07-22 QLK323D - Jul 22, 03:15 UTCJul 22, 03:55 UTC40m
2026-07-22 QLK322D - Jul 22, 01:55 UTCJul 22, 02:25 UTC30m
2026-07-22 QLK377D - Jul 22, 00:25 UTCJul 22, 00:50 UTC25m
2026-07-21 QLK376D - Jul 21, 23:10 UTCJul 21, 23:35 UTC25m
2026-07-21 QLK815D - Jul 21, 10:30 UTCJul 21, 11:05 UTC35m
2026-07-21 QLK814D - Jul 21, 07:25 UTCJul 21, 07:55 UTC30m
2026-07-21 QLK387D - Jul 21, 04:50 UTCJul 21, 06:30 UTC1h 40m
2026-07-21 QLK386D - Jul 21, 01:50 UTCJul 21, 03:25 UTC1h 35m
2026-07-21 QLK321D - Jul 21, 00:25 UTCJul 21, 00:55 UTC30m
2026-07-20 QLK320D - Jul 20, 23:00 UTCJul 20, 23:30 UTC30m
2026-07-20 QLK329D - Jul 20, 21:00 UTCJul 20, 21:40 UTC40m
2026-07-20 QLK340D - Jul 20, 09:05 UTCJul 20, 09:40 UTC35m
2026-07-20 QLK455D - Jul 20, 06:30 UTCJul 20, 07:10 UTC40m
2026-07-20 QLK454D - Jul 20, 03:30 UTCJul 20, 04:05 UTC35m
2026-07-16 QLK547D - Jul 16, 05:45 UTCJul 16, 06:25 UTC40m
2026-07-16 QLK546D - Jul 16, 01:00 UTCJul 16, 01:35 UTC35m
2026-07-15 QLK451D - Jul 15, 23:05 UTCJul 15, 23:40 UTC35m
2026-07-15 QLK450D - Jul 15, 19:45 UTCJul 15, 20:15 UTC30m
2026-07-15 QLK367D - Jul 15, 09:20 UTCJul 15, 10:00 UTC40m
2026-07-15 QLK357D - Jul 15, 07:45 UTCJul 15, 07:55 UTC10m
2026-07-15 QLK357D - Jul 15, 06:45 UTCJul 15, 07:00 UTC15m
2026-07-15 QLK354D - Jul 15, 01:35 UTCJul 15, 01:45 UTC10m
2026-07-15 QLK354D - Jul 15, 00:35 UTCJul 15, 00:55 UTC20m
2026-07-14 QLK362D - Jul 14, 22:45 UTCJul 14, 23:20 UTC35m

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

Mode-S 7C39F5 frequently asked

What is Mode-S code 7C39F5?
7C39F5 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-LQF.
Where is Mode-S 7C39F5 registered?
Mode-S code 7C39F5 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C39F5 broadcasting right now?
Mode-S 7C39F5 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 7C39F5, octal 37034765, decimal 8,141,301.
What flights does 7C39F5 operate?
Mode-S 7C39F5 has broadcast 20 distinct callsigns, including QLK454D, QLK354D, QLK581D, QLK580D, QLK455D.