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 Jul 26, 21:40 UTC
Flights observed
264
Distinct callsigns
20
Country
AU
Last broadcast
Jul 26, 21:40 UTC

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 Qantas 10 2026-07-23
QFA164 Qantas 9 2026-07-23
QFA167 - 6 2026-07-04
QFA170 Qantas 5 2026-07-24
QFA163 Qantas 5 2026-07-26
QFA139 Qantas 5 2026-07-23
QFA185 - 4 2026-07-08
QFA172 Qantas 4 2026-04-30
QFA169 Qantas 4 2026-07-24
QFA162 Qantas 4 2026-07-26
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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 QFA162 WLG → SYD Jul 26, 18:10 UTCJul 26, 21:20 UTC3h 10m
2026-07-26 QFA163 SYD → WLG Jul 26, 09:40 UTCJul 26, 12:15 UTC2h 35m
2026-07-26 QFA92 NOU → SYD Jul 26, 05:35 UTCJul 26, 07:00 UTC1h 26m
2026-07-26 QFA92 NOU → SYD Jul 26, 03:55 UTCJul 26, 04:05 UTC10m
2026-07-26 QFA91 SYD → NOU Jul 26, 00:10 UTCJul 26, 01:05 UTC55m
2026-07-24 QFA190 TBU → SYD Jul 24, 23:45 UTCJul 25, 11:05 UTC11h 20m
2026-07-24 QFA138 CHC → SYD Jul 24, 18:20 UTCJul 24, 21:30 UTC3h 10m
2026-07-24 QFA169 MEL → CHC Jul 24, 08:40 UTCJul 24, 11:35 UTC2h 55m
2026-07-24 QFA170 CHC → MEL Jul 24, 04:00 UTCJul 24, 07:25 UTC3h 25m
2026-07-24 QFA133 MEL → CHC Jul 24, 02:00 UTCJul 24, 02:20 UTC20m
2026-07-23 QFA133 MEL → CHC Jul 23, 23:30 UTCJul 24, 00:10 UTC40m
2026-07-23 QFA132 AKL → MEL Jul 23, 18:10 UTCJul 23, 22:05 UTC3h 55m
2026-07-23 QFA139 SYD → CHC Jul 23, 12:35 UTCJul 23, 12:55 UTC20m
2026-07-23 QFA139 SYD → CHC Jul 23, 10:25 UTCJul 23, 10:55 UTC30m
2026-07-23 QFA164 WLG → SYD Jul 23, 04:25 UTCJul 23, 07:55 UTC3h 30m
2026-07-23 QFA161 SYD → WLG Jul 23, 00:45 UTCJul 23, 03:15 UTC2h 30m
2026-07-22 QFA124 AKL → BNE Jul 22, 19:25 UTCJul 22, 22:30 UTC3h 5m
2026-07-22 QFA442 MEL → SYD Jul 22, 02:45 UTCJul 22, 03:40 UTC55m
2026-07-21 QFA429 SYD → MEL Jul 21, 23:55 UTCJul 22, 01:10 UTC1h 15m
2026-07-21 QFA589 BNE → PER Jul 21, 21:00 UTCJul 21, 22:10 UTC1h 10m
2026-07-21 QFA598 PER → BNE Jul 21, 09:40 UTCJul 21, 10:40 UTC1h 0m
2026-07-21 QFA579 SYD → PER Jul 21, 03:15 UTCJul 21, 05:15 UTC2h 0m
2026-07-21 QFA578 PER → SYD Jul 21, 00:10 UTCJul 21, 02:05 UTC1h 55m
2026-07-20 QFA406 MEL → SYD Jul 20, 20:35 UTCJul 20, 21:50 UTC1h 15m
2026-07-20 QFA156 AKL → MEL Jul 20, 03:30 UTCJul 20, 07:05 UTC3h 35m
2026-07-19 QFA119 BNE → AKL Jul 19, 22:35 UTCJul 20, 01:25 UTC2h 50m
2026-07-19 QFA554 SYD → BNE Jul 19, 11:15 UTCJul 19, 12:20 UTC1h 5m
2026-07-19 QFA474 MEL → SYD Jul 19, 07:40 UTCJul 19, 08:45 UTC1h 5m
2026-07-19 QFA764 ADL → SYD Jul 19, 02:55 UTCJul 19, 05:50 UTC2h 55m
2026-07-17 QFA891 ADL → PER Jul 17, 09:35 UTCJul 17, 12:55 UTC3h 20m
2026-07-17 QFA886 PER → ADL Jul 17, 05:55 UTCJul 17, 08:10 UTC2h 15m
2026-07-17 QFA887 ADL → PER Jul 17, 01:35 UTCJul 17, 04:44 UTC3h 10m
2026-07-16 QFA882 PER → ADL Jul 16, 21:50 UTCJul 17, 00:04 UTC2h 15m
2026-07-16 QFA775 MEL → PER Jul 16, 10:04 UTCJul 16, 14:00 UTC3h 55m
2026-07-16 QFA631 BNE → MEL Jul 16, 06:40 UTCJul 16, 08:35 UTC1h 55m
2026-07-16 QFA618 MEL → BNE Jul 16, 03:40 UTCJul 16, 05:35 UTC1h 55m
2026-07-16 QFA429 SYD → MEL Jul 16, 00:05 UTCJul 16, 01:15 UTC1h 10m
2026-07-15 QFA164 - Jul 15, 06:25 UTCJul 15, 07:05 UTC40m
2026-07-15 QFA164 - Jul 15, 04:00 UTCJul 15, 04:15 UTC15m
2026-07-15 QFA161 - Jul 15, 02:35 UTCJul 15, 02:50 UTC15m
2026-07-15 QFA161 - Jul 15, 00:05 UTCJul 15, 00:35 UTC30m
2026-07-14 QFA124 - Jul 14, 19:15 UTCJul 14, 22:05 UTC2h 50m
2026-07-14 QFA123 - Jul 14, 06:15 UTCJul 14, 08:25 UTC2h 10m
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

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 Jul 26, 21:40 UTC.
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, QFA164, QFA167, QFA170, QFA163.