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 19d ago
Flights observed
102
Distinct callsigns
20
Country
AU
Last broadcast
19d 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
QFA172 Qantas 4 2026-04-30
QFA942 Qantas 3 2026-04-15
QFA857 - 3 2026-04-14
QFA856 - 3 2026-04-14
QFA777 Qantas 3 2026-05-07
QFA768 Qantas 3 2026-05-07
QFA609 Qantas 3 2026-05-05
QFA171 Qantas 3 2026-04-29
QFA137 Qantas 3 2026-05-03
QFA849 Qantas 2 2026-04-15
QFA836 Qantas 2 2026-04-23
QFA742 Qantas 2 2026-04-18
QFA737 Qantas 2 2026-04-18
QFA644 Qantas 2 2026-04-21
QFA629 Qantas 2 2026-04-17
QFA616 Qantas 2 2026-04-17
QFA449 Qantas 2 2026-04-16
QFA404 Qantas 2 2026-04-30
QFA169 Qantas 2 2026-05-01
QFA163 Qantas 2 2026-04-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-10 - - May 10, 23:50 UTCMay 11, 00:00 UTC10m
2026-05-08 QFA946 MEL → CBR May 8, 07:50 UTCMay 8, 12:00 UTC4h 10m
2026-05-08 QFA945 CBR → MEL May 8, 01:14 UTCMay 8, 05:59 UTC4h 45m
2026-05-07 QFA604 MEL → BNE May 7, 21:05 UTCMay 7, 22:50 UTC1h 45m
2026-05-07 QFA768 PER → MEL May 7, 07:35 UTCMay 7, 11:05 UTC3h 30m
2026-05-07 QFA777 MEL → PER May 7, 02:15 UTCMay 7, 05:35 UTC3h 20m
2026-05-06 QFA768 PER → MEL May 6, 07:01 UTCMay 6, 10:25 UTC3h 24m
2026-05-06 QFA777 MEL → PER May 6, 01:55 UTCMay 6, 05:35 UTC3h 40m
2026-05-05 QFA609 BNE → MEL May 5, 21:40 UTCMay 5, 23:40 UTC2h 0m
2026-05-04 QFA57 BNE → POM May 4, 23:35 UTCMay 5, 06:05 UTC6h 30m
2026-05-03 QFA203 SYD → POM May 3, 23:50 UTCMay 4, 07:40 UTC7h 50m
2026-05-03 QFA136 CHC → SYD May 3, 05:40 UTCMay 3, 08:30 UTC2h 50m
2026-05-03 QFA137 SYD → CHC May 3, 01:45 UTCMay 3, 04:20 UTC2h 34m
2026-05-01 QFA101 SYD → NAN May 1, 23:20 UTCMay 2, 02:25 UTC3h 5m
2026-05-01 QFA138 CHC → SYD May 1, 18:20 UTCMay 1, 21:10 UTC2h 50m
2026-05-01 QFA169 MEL → CHC May 1, 12:50 UTCMay 1, 13:05 UTC15m
2026-05-01 QFA169 MEL → CHC May 1, 10:05 UTCMay 1, 10:30 UTC25m
2026-05-01 QFA453 SYD → MEL May 1, 05:25 UTCMay 1, 06:30 UTC1h 5m
2026-05-01 QFA738 ADL → SYD May 1, 02:35 UTCMay 1, 04:05 UTC1h 30m
2026-05-01 QFA733 SYD → ADL May 1, 00:00 UTCMay 1, 01:40 UTC1h 40m
2026-04-30 QFA404 MEL → SYD Apr 30, 20:20 UTCApr 30, 21:30 UTC1h 10m
2026-04-30 QFA696 ADL → MEL Apr 30, 10:20 UTCApr 30, 11:20 UTC1h 0m
2026-04-30 QFA693 MEL → ADL Apr 30, 08:20 UTCApr 30, 09:20 UTC1h 0m
2026-04-30 QFA172 WLG → MEL Apr 30, 03:00 UTCApr 30, 06:30 UTC3h 30m
2026-04-29 QFA171 MEL → WLG Apr 29, 22:25 UTCApr 30, 01:40 UTC3h 14m
2026-04-29 QFA045 MEL → DPS Apr 29, 07:55 UTCApr 29, 20:30 UTC12h 36m
2026-04-29 QFA172 WLG → MEL Apr 29, 02:30 UTCApr 29, 06:10 UTC3h 40m
2026-04-28 QFA171 MEL → WLG Apr 28, 22:10 UTCApr 29, 01:15 UTC3h 5m
2026-04-28 QFA690 ADL → MEL Apr 28, 07:20 UTCApr 28, 08:25 UTC1h 5m
2026-04-28 QFA687 MEL → ADL Apr 28, 05:20 UTCApr 28, 06:20 UTC1h 0m
2026-04-28 QFA441 SYD → MEL Apr 28, 02:25 UTCApr 28, 03:30 UTC1h 5m
2026-04-27 QFA142 AKL → SYD Apr 27, 20:30 UTCApr 27, 23:25 UTC2h 55m
2026-04-27 QFA125 BNE → AKL Apr 27, 09:00 UTCApr 27, 11:50 UTC2h 50m
2026-04-27 QFA134 CHC → BNE Apr 27, 03:50 UTCApr 27, 07:15 UTC3h 25m
2026-04-26 QFA133 MEL → CHC Apr 26, 23:20 UTCApr 27, 02:35 UTC3h 15m
2026-04-26 QFA120 AKL → BNE Apr 26, 18:15 UTCApr 26, 21:20 UTC3h 5m
2026-04-26 QFA149 SYD → AKL Apr 26, 09:50 UTCApr 26, 12:40 UTC2h 50m
2026-04-26 QFA146 AKL → SYD Apr 26, 04:45 UTCApr 26, 07:50 UTC3h 5m
2026-04-25 QFA153 MEL → AKL Apr 25, 23:55 UTCApr 26, 03:20 UTC3h 25m
2026-04-25 QFA045 MEL → DPS Apr 25, 08:25 UTCApr 25, 20:55 UTC12h 30m
2026-04-25 QFA172 WLG → MEL Apr 25, 05:50 UTCApr 25, 06:25 UTC35m
2026-04-25 QFA172 WLG → MEL Apr 25, 03:05 UTCApr 25, 03:15 UTC10m
2026-04-24 QFA171 MEL → WLG Apr 24, 22:20 UTCApr 25, 01:40 UTC3h 20m
2026-04-24 QFA881 OOL → MEL Apr 24, 06:55 UTCApr 24, 09:00 UTC2h 5m
2026-04-24 QFA878 CBR → SYD Apr 24, 04:00 UTCApr 24, 05:50 UTC1h 50m
2026-04-24 QFA837 DRW → MEL Apr 24, 00:05 UTCApr 24, 00:45 UTC40m
2026-04-23 QFA47 SYD → WLG Apr 23, 12:15 UTCApr 23, 12:25 UTC10m
2026-04-23 QFA836 MEL → DRW Apr 23, 05:50 UTCApr 23, 06:01 UTC10m
2026-04-23 QFA836 MEL → DRW Apr 23, 02:10 UTCApr 23, 02:35 UTC25m
2026-04-22 QFA768 PER → MEL Apr 22, 07:00 UTCApr 22, 10:15 UTC3h 15m

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 19d 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 QFA172, QFA942, QFA857, QFA856, QFA777.