Apparatus

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sensors Mode-S transponder

7C6DDA

ICAO 24-bit transponder address · allocated to Australia

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

Hex
7C6DDA
Octal
37066732
Decimal
8,154,586
Country
AU
Tail
VH-VZG
Type
B738
No current signal · last broadcast 4h ago
Flights observed
211
Distinct callsigns
20
Country
AU
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 7C6DDA.

Country allocation

The ICAO 24-bit address 7C6DDA 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
QFA138 - 7 2026-07-01
QFA133 - 6 2026-07-13
QFA147 - 5 2026-07-04
QFA125 - 5 2026-04-14
QFA122 - 5 2026-07-02
QFA121 - 5 2026-07-02
QFA140 - 4 2026-07-04
QFA139 - 4 2026-07-06
QFA137 - 4 2026-06-19
QFA120 - 4 2026-06-30
QFA770 - 3 2026-07-09
QFA6036 Qantas 3 2026-05-18
QFA6033 - 3 2026-04-15
QFA578 - 3 2026-07-10
QFA499 Qantas 3 2026-06-13
QFA170 - 3 2026-07-01
QFA136 - 3 2026-06-19
QFA126 - 3 2026-06-25
QFA824 Qantas 2 2026-06-11
QFA773 - 2 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 QFA135 - Jul 14, 11:55 UTCJul 14, 12:15 UTC20m
2026-07-14 QFA135 - Jul 14, 09:15 UTCJul 14, 10:00 UTC45m
2026-07-14 QFA134 CHC → BNE Jul 14, 03:50 UTCJul 14, 07:35 UTC3h 45m
2026-07-13 QFA133 BNE → CHC Jul 13, 23:30 UTCJul 14, 02:25 UTC2h 55m
2026-07-13 QFA581 - Jul 13, 05:40 UTCJul 13, 06:55 UTC1h 15m
2026-07-13 QFA580 - Jul 13, 02:45 UTCJul 13, 04:05 UTC1h 20m
2026-07-13 QFA516 SYD → BNE Jul 13, 00:20 UTCJul 13, 01:35 UTC1h 15m
2026-07-12 QFA414 MEL → SYD Jul 12, 21:35 UTCJul 12, 22:40 UTC1h 5m
2026-07-12 QFA776 PER → MEL Jul 12, 15:55 UTCJul 12, 19:01 UTC3h 5m
2026-07-12 QFA773 MEL → PER Jul 12, 09:20 UTCJul 12, 13:15 UTC3h 55m
2026-07-12 QFA766 PER → MEL Jul 12, 04:50 UTCJul 12, 08:01 UTC3h 10m
2026-07-11 QFA763 MEL → PER Jul 11, 23:55 UTCJul 12, 03:45 UTC3h 50m
2026-07-11 QFA156 - Jul 11, 03:50 UTCJul 11, 07:30 UTC3h 40m
2026-07-10 QFA143 - Jul 10, 23:40 UTCJul 11, 02:30 UTC2h 50m
2026-07-10 QFA484 MEL → SYD Jul 10, 09:40 UTCJul 10, 10:50 UTC1h 10m
2026-07-10 QFA465 SYD → MEL Jul 10, 07:25 UTCJul 10, 08:40 UTC1h 15m
2026-07-10 QFA579 - Jul 10, 04:10 UTCJul 10, 06:10 UTC2h 0m
2026-07-10 QFA578 - Jul 10, 00:40 UTCJul 10, 02:50 UTC2h 10m
2026-07-09 QFA412 MEL → SYD Jul 9, 21:35 UTCJul 9, 23:25 UTC1h 50m
2026-07-09 QFA770 PER → MEL Jul 9, 09:05 UTCJul 9, 12:15 UTC3h 10m
2026-07-09 QFA767 MEL → PER Jul 9, 03:25 UTCJul 9, 07:15 UTC3h 50m
2026-07-08 QFA770 PER → MEL Jul 8, 10:05 UTCJul 8, 13:20 UTC3h 15m
2026-07-08 QFA767 MEL → PER Jul 8, 05:20 UTCJul 8, 09:00 UTC3h 40m
2026-07-08 QFA760 PER → MEL Jul 8, 00:50 UTCJul 8, 04:05 UTC3h 15m
2026-07-07 QFA857 - Jul 7, 10:25 UTCJul 7, 14:25 UTC4h 0m
2026-07-07 QFA856 - Jul 7, 05:50 UTCJul 7, 09:20 UTC3h 30m
2026-07-07 QFA765 MEL → PER Jul 7, 00:55 UTCJul 7, 04:35 UTC3h 40m
2026-07-06 QFA168 - Jul 6, 21:05 UTCJul 6, 21:45 UTC40m
2026-07-06 QFA168 - Jul 6, 18:30 UTCJul 6, 18:40 UTC10m
2026-07-06 QFA139 - Jul 6, 11:10 UTCJul 6, 14:05 UTC2h 55m
2026-07-06 QFA146 - Jul 6, 04:40 UTCJul 6, 07:40 UTC3h 0m
2026-07-05 QFA153 MEL → AKL Jul 5, 23:55 UTCJul 6, 03:15 UTC3h 20m
2026-07-05 QFA152 AKL → MEL Jul 5, 18:45 UTCJul 5, 22:15 UTC3h 30m
2026-07-05 QFA149 SYD → AKL Jul 5, 09:30 UTCJul 5, 12:05 UTC2h 35m
2026-07-05 QFA92 - Jul 5, 04:25 UTCJul 5, 05:55 UTC1h 30m
2026-07-04 QFA91 - Jul 4, 23:10 UTCJul 5, 00:05 UTC55m
2026-07-04 QFA140 - Jul 4, 18:20 UTCJul 4, 21:45 UTC3h 25m
2026-07-04 QFA147 SYD → AKL Jul 4, 08:55 UTCJul 4, 11:25 UTC2h 30m
2026-07-04 QFA144 - Jul 4, 01:40 UTCJul 4, 04:50 UTC3h 10m
2026-07-03 QFA141 - Jul 3, 21:30 UTCJul 3, 23:55 UTC2h 25m
2026-07-02 QFA728 SYD → SYD Jul 2, 23:50 UTCJul 3, 06:25 UTC6h 35m
2026-07-02 QFA140 AKL → SYD Jul 2, 18:25 UTCJul 2, 21:45 UTC3h 20m
2026-07-02 QFA147 - Jul 2, 11:35 UTCJul 2, 11:55 UTC20m
2026-07-02 QFA147 - Jul 2, 09:20 UTCJul 2, 09:50 UTC30m
2026-07-02 QFA122 - Jul 2, 04:05 UTCJul 2, 07:05 UTC3h 0m
2026-07-02 QFA121 - Jul 2, 00:00 UTCJul 2, 02:30 UTC2h 30m
2026-07-01 QFA138 - Jul 1, 20:35 UTCJul 1, 21:25 UTC50m
2026-07-01 QFA138 - Jul 1, 18:15 UTCJul 1, 18:25 UTC10m
2026-07-01 QFA169 - Jul 1, 11:55 UTCJul 1, 12:15 UTC20m
2026-07-01 QFA169 - Jul 1, 09:15 UTCJul 1, 09:45 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-VZG page for operator, model, and routing details .

Mode-S 7C6DDA frequently asked

What is Mode-S code 7C6DDA?
7C6DDA is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-VZG.
Where is Mode-S 7C6DDA registered?
Mode-S code 7C6DDA is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C6DDA broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C6DDA, octal 37066732, decimal 8,154,586.
What flights does 7C6DDA operate?
Mode-S 7C6DDA has broadcast 20 distinct callsigns, including QFA138, QFA133, QFA147, QFA125, QFA122.