Apparatus

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sensors Mode-S transponder

7C6DDD

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-VZJ · BOEING 737-800 · operated by QANTAS AIRWAYS LIMITED

Hex
7C6DDD
Octal
37066735
Decimal
8,154,589
Country
AU
Tail
VH-VZJ
Type
B738
No current signal · last broadcast Jul 26, 12:40 UTC
Flights observed
353
Distinct callsigns
20
Country
AU
Last broadcast
Jul 26, 12:40 UTC

Last known position

Most recent position reported by Mode-S 7C6DDD.

Country allocation

The ICAO 24-bit address 7C6DDD 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
QFA133 - 8 2026-07-05
QFA120 - 8 2026-07-11
QFA134 Qantas 7 2026-07-22
QFA138 - 6 2026-06-29
QFA135 - 6 2026-07-01
QFA170 - 5 2026-06-21
QFA144 - 5 2026-07-17
QFA122 - 5 2026-07-18
QFA121 - 5 2026-07-18
QFA941 Qantas 4 2026-06-04
QFA613 - 4 2026-07-15
QFA196 Qantas 4 2026-06-05
QFA177 Qantas 4 2026-06-19
QFA172 Qantas 4 2026-05-23
QFA171 Qantas 4 2026-05-22
QFA167 - 4 2026-07-21
QFA161 Qantas 4 2026-05-07
QFA151 - 4 2026-07-16
QFA125 - 4 2026-07-05
QFA841 Qantas 3 2026-04-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 QFA182 AKL → SYD Jul 26, 09:55 UTCJul 26, 12:30 UTC2h 35m
2026-07-26 QFA181 SYD → AKL Jul 26, 04:40 UTCJul 26, 07:05 UTC2h 26m
2026-07-25 QFA644 PER → SYD Jul 25, 01:15 UTCJul 25, 05:05 UTC3h 50m
2026-07-24 QFA761 TSV → BNE Jul 24, 20:05 UTCJul 24, 23:45 UTC3h 40m
2026-07-24 QFA633 BNE → MEL Jul 24, 07:35 UTCJul 24, 10:00 UTC2h 25m
2026-07-24 QFA620 MEL → BNE Jul 24, 04:30 UTCJul 24, 06:10 UTC1h 40m
2026-07-24 QFA441 SYD → MEL Jul 24, 02:20 UTCJul 24, 03:30 UTC1h 10m
2026-07-23 QFA511 BNE → SYD Jul 23, 22:50 UTCJul 24, 00:00 UTC1h 10m
2026-07-23 QFA624 MEL → BNE Jul 23, 06:25 UTCJul 23, 08:05 UTC1h 40m
2026-07-23 QFA443 SYD → MEL Jul 23, 03:10 UTCJul 23, 04:20 UTC1h 10m
2026-07-23 QFA519 BNE → SYD Jul 23, 00:35 UTCJul 23, 01:55 UTC1h 20m
2026-07-22 QFA134 CHC → BNE Jul 22, 03:35 UTCJul 22, 03:50 UTC15m
2026-07-21 QFA167 MEL → CHC Jul 21, 23:35 UTCJul 22, 02:20 UTC2h 45m
2026-07-21 QFA633 BNE → MEL Jul 21, 07:30 UTCJul 21, 09:40 UTC2h 10m
2026-07-21 QFA620 MEL → BNE Jul 21, 04:30 UTCJul 21, 06:20 UTC1h 50m
2026-07-21 QFA619 BNE → MEL Jul 21, 00:10 UTCJul 21, 02:10 UTC2h 0m
2026-07-20 QFA504 SYD → BNE Jul 20, 21:15 UTCJul 20, 22:20 UTC1h 5m
2026-07-20 QFA470 MEL → SYD Jul 20, 07:15 UTCJul 20, 08:20 UTC1h 5m
2026-07-20 QFA451 SYD → MEL Jul 20, 05:05 UTCJul 20, 06:20 UTC1h 15m
2026-07-20 QFA527 BNE → SYD Jul 20, 02:30 UTCJul 20, 03:45 UTC1h 15m
2026-07-19 QFA750 ADL → SYD Jul 19, 20:55 UTCJul 20, 01:15 UTC4h 20m
2026-07-19 QFA558 SYD → BNE Jul 19, 12:05 UTCJul 19, 13:15 UTC1h 10m
2026-07-19 QFA650 PER → SYD Jul 19, 06:55 UTCJul 19, 10:30 UTC3h 35m
2026-07-19 QFA645 SYD → PER Jul 19, 00:50 UTCJul 19, 05:25 UTC4h 35m
2026-07-18 QFA122 - Jul 18, 04:10 UTCJul 18, 07:00 UTC2h 50m
2026-07-18 QFA121 - Jul 18, 00:10 UTCJul 18, 02:29 UTC2h 20m
2026-07-17 QFA124 AKL → BNE Jul 17, 19:09 UTCJul 17, 22:05 UTC2h 55m
2026-07-17 QFA123 - Jul 17, 06:45 UTCJul 17, 09:10 UTC2h 25m
2026-07-17 QFA144 - Jul 17, 03:59 UTCJul 17, 04:49 UTC50m
2026-07-17 QFA144 - Jul 17, 01:49 UTCJul 17, 02:05 UTC15m
2026-07-16 QFA151 MEL → AKL Jul 16, 20:45 UTCJul 17, 00:04 UTC3h 20m
2026-07-16 QFA768 PER → MEL Jul 16, 08:35 UTCJul 16, 11:40 UTC3h 5m
2026-07-16 QFA777 - Jul 16, 05:45 UTCJul 16, 06:15 UTC30m
2026-07-16 QFA777 - Jul 16, 02:45 UTCJul 16, 03:55 UTC1h 10m
2026-07-15 QFA613 BNE → MEL Jul 15, 22:10 UTCJul 16, 00:10 UTC2h 0m
2026-07-15 QFA827 - Jul 15, 18:30 UTCJul 15, 19:05 UTC35m
2026-07-15 QFA826 - Jul 15, 10:40 UTCJul 15, 11:05 UTC25m
2026-07-15 QFA938 PER → BNE Jul 15, 05:15 UTCJul 15, 09:20 UTC4h 5m
2026-07-14 QFA935 BNE → PER Jul 14, 22:50 UTCJul 15, 04:10 UTC5h 20m
2026-07-14 QFA500 SYD → BNE Jul 14, 20:20 UTCJul 14, 21:25 UTC1h 5m
2026-07-14 QFA148 - Jul 14, 06:30 UTCJul 14, 09:40 UTC3h 10m
2026-07-14 QFA145 SYD → AKL Jul 14, 02:15 UTCJul 14, 04:50 UTC2h 35m
2026-07-13 QFA418 MEL → SYD Jul 13, 22:15 UTCJul 13, 23:15 UTC1h 0m
2026-07-13 QFA704 MEL → MEL Jul 13, 03:40 UTCJul 13, 10:40 UTC7h 0m
2026-07-12 QFA760 PER → MEL Jul 12, 23:10 UTCJul 13, 02:15 UTC3h 5m
2026-07-12 QFA769 MEL → PER Jul 12, 05:01 UTCJul 12, 08:50 UTC3h 50m
2026-07-12 QFA619 BNE → MEL Jul 12, 00:10 UTCJul 12, 02:30 UTC2h 20m
2026-07-11 QFA120 - Jul 11, 18:40 UTCJul 11, 21:50 UTC3h 10m
2026-07-11 QFA209 - Jul 11, 04:20 UTCJul 11, 06:55 UTC2h 35m
2026-07-11 QFA210 - Jul 11, 01:35 UTCJul 11, 02:20 UTC45m

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

Mode-S 7C6DDD frequently asked

What is Mode-S code 7C6DDD?
7C6DDD is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-VZJ.
Where is Mode-S 7C6DDD registered?
Mode-S code 7C6DDD is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C6DDD broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 12:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C6DDD, octal 37066735, decimal 8,154,589.
What flights does 7C6DDD operate?
Mode-S 7C6DDD has broadcast 20 distinct callsigns, including QFA133, QFA120, QFA134, QFA138, QFA135.