Apparatus

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sensors Mode-S transponder

7C6DEC

ICAO 24-bit transponder address · allocated to Australia

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

Hex
7C6DEC
Octal
37066754
Decimal
8,154,604
Country
AU
Tail
VH-VZY
Type
B738
No current signal · last broadcast 1h ago
Flights observed
222
Distinct callsigns
20
Country
AU
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 7C6DEC.

Country allocation

The ICAO 24-bit address 7C6DEC 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
QFA161 - 7 2026-07-12
QFA167 - 6 2026-07-04
QFA164 - 6 2026-07-12
QFA185 - 4 2026-07-08
QFA172 Qantas 4 2026-04-30
QFA170 - 4 2026-07-03
QFA163 - 4 2026-06-30
QFA942 Qantas 3 2026-04-15
QFA857 - 3 2026-04-14
QFA856 - 3 2026-04-14
QFA842 - 3 2026-06-29
QFA777 Qantas 3 2026-05-07
QFA768 Qantas 3 2026-05-07
QFA653 Qantas 3 2026-06-15
QFA644 - 3 2026-06-20
QFA609 Qantas 3 2026-05-05
QFA449 - 3 2026-06-14
QFA186 - 3 2026-07-08
QFA171 Qantas 3 2026-04-29
QFA169 - 3 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 QFA123 - Jul 14, 06:15 UTCJul 14, 06:45 UTC30m
2026-07-14 QFA144 - Jul 14, 01:45 UTCJul 14, 04:55 UTC3h 10m
2026-07-13 QFA141 - Jul 13, 21:50 UTCJul 14, 00:25 UTC2h 35m
2026-07-13 QFA148 - Jul 13, 06:30 UTCJul 13, 09:40 UTC3h 10m
2026-07-13 QFA145 - Jul 13, 02:15 UTCJul 13, 04:45 UTC2h 30m
2026-07-12 QFA142 - Jul 12, 20:50 UTCJul 13, 00:01 UTC3h 10m
2026-07-12 QFA149 - Jul 12, 10:25 UTCJul 12, 13:01 UTC2h 35m
2026-07-12 QFA164 - Jul 12, 07:01 UTCJul 12, 07:40 UTC40m
2026-07-12 QFA164 - Jul 12, 04:25 UTCJul 12, 04:35 UTC10m
2026-07-12 QFA161 - Jul 12, 02:40 UTCJul 12, 02:55 UTC15m
2026-07-12 QFA161 - Jul 12, 00:15 UTCJul 12, 00:40 UTC25m
2026-07-11 QFA124 - Jul 11, 19:30 UTCJul 11, 22:15 UTC2h 45m
2026-07-11 QFA123 - Jul 11, 06:40 UTCJul 11, 09:05 UTC2h 25m
2026-07-11 QFA192 - Jul 11, 04:01 UTCJul 11, 04:45 UTC45m
2026-07-11 QFA192 - Jul 11, 01:50 UTCJul 11, 02:00 UTC10m
2026-07-11 QFA191 - Jul 11, 00:25 UTCJul 11, 00:40 UTC15m
2026-07-10 QFA191 - Jul 10, 22:00 UTCJul 10, 22:30 UTC30m
2026-07-10 QFA164 - Jul 10, 04:25 UTCJul 10, 08:00 UTC3h 35m
2026-07-10 QFA161 SYD → WLG Jul 10, 00:00 UTCJul 10, 02:40 UTC2h 40m
2026-07-09 QFA140 - Jul 9, 18:15 UTCJul 9, 21:15 UTC3h 0m
2026-07-09 QFA125 BNE → AKL Jul 9, 09:45 UTCJul 9, 12:20 UTC2h 35m
2026-07-09 QFA184 BNE → BNE Jul 9, 02:10 UTCJul 9, 07:45 UTC5h 35m
2026-07-08 QFA198 BNE → BNE Jul 8, 11:45 UTCJul 9, 00:25 UTC12h 40m
2026-07-08 QFA186 - Jul 8, 05:40 UTCJul 8, 08:55 UTC3h 15m
2026-07-08 QFA185 - Jul 8, 00:55 UTCJul 8, 04:10 UTC3h 15m
2026-07-07 QFA186 - Jul 7, 05:35 UTCJul 7, 08:45 UTC3h 10m
2026-07-07 QFA185 - Jul 7, 00:55 UTCJul 7, 04:00 UTC3h 5m
2026-07-06 QFA544 SYD → BNE Jul 6, 07:40 UTCJul 6, 08:45 UTC1h 5m
2026-07-06 QFA535 BNE → SYD Jul 6, 04:40 UTCJul 6, 05:50 UTC1h 10m
2026-07-06 QFA614 MEL → BNE Jul 6, 01:35 UTCJul 6, 03:25 UTC1h 50m
2026-07-05 QFA613 BNE → MEL Jul 5, 22:10 UTCJul 6, 00:15 UTC2h 5m
2026-07-05 QFA126 - Jul 5, 04:10 UTCJul 5, 07:35 UTC3h 25m
2026-07-04 QFA119 BNE → AKL Jul 4, 22:55 UTCJul 5, 01:30 UTC2h 35m
2026-07-04 QFA134 - Jul 4, 04:15 UTCJul 4, 08:00 UTC3h 45m
2026-07-04 QFA167 - Jul 4, 02:45 UTCJul 4, 03:00 UTC15m
2026-07-04 QFA167 - Jul 4, 00:05 UTCJul 4, 00:35 UTC30m
2026-07-03 QFA168 - Jul 3, 18:35 UTCJul 3, 22:00 UTC3h 25m
2026-07-03 QFA169 MEL → CHC Jul 3, 09:40 UTCJul 3, 12:45 UTC3h 5m
2026-07-03 QFA170 - Jul 3, 07:25 UTCJul 3, 08:10 UTC45m
2026-07-03 QFA170 - Jul 3, 04:35 UTCJul 3, 04:50 UTC15m
2026-07-03 QFA167 - Jul 3, 03:00 UTCJul 3, 03:10 UTC10m
2026-07-03 QFA167 - Jul 3, 00:20 UTCJul 3, 00:50 UTC30m
2026-07-02 QFA168 - Jul 2, 21:45 UTCJul 2, 22:30 UTC45m
2026-07-02 QFA168 - Jul 2, 18:55 UTCJul 2, 19:05 UTC10m
2026-07-02 QFA139 - Jul 2, 12:15 UTCJul 2, 12:30 UTC15m
2026-07-02 QFA139 - Jul 2, 10:00 UTCJul 2, 10:30 UTC30m
2026-07-02 QFA164 - Jul 2, 06:30 UTCJul 2, 07:20 UTC50m
2026-07-02 QFA164 - Jul 2, 04:00 UTCJul 2, 04:10 UTC10m
2026-07-02 QFA161 - Jul 2, 02:30 UTCJul 2, 02:45 UTC15m
2026-07-02 QFA161 - Jul 2, 00:05 UTCJul 2, 00:30 UTC25m

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

Mode-S 7C6DEC frequently asked

What is Mode-S code 7C6DEC?
7C6DEC is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-VZY.
Where is Mode-S 7C6DEC registered?
Mode-S code 7C6DEC is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C6DEC 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 7C6DEC, octal 37066754, decimal 8,154,604.
What flights does 7C6DEC operate?
Mode-S 7C6DEC has broadcast 20 distinct callsigns, including QFA161, QFA167, QFA164, QFA185, QFA172.