Apparatus

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sensors Mode-S transponder

7C6DE6

ICAO 24-bit transponder address · allocated to Australia

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

Hex
7C6DE6
Octal
37066746
Decimal
8,154,598
Country
AU
Tail
VH-VZS
Type
B738
No current signal · last broadcast Jul 26, 10:40 UTC
Flights observed
360
Distinct callsigns
20
Country
AU
Last broadcast
Jul 26, 10:40 UTC

Last known position

Most recent position reported by Mode-S 7C6DE6.

Country allocation

The ICAO 24-bit address 7C6DE6 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 Qantas 8 2026-07-20
QFA143 Qantas 7 2026-07-20
QFA167 Qantas 6 2026-07-24
QFA141 Qantas 6 2026-07-22
QFA135 Qantas 6 2026-07-20
QFA168 Qantas 5 2026-07-23
QFA158 - 5 2026-07-12
QFA155 - 5 2026-07-12
QFA840 Qantas 4 2026-05-28
QFA836 Qantas 4 2026-07-25
QFA161 Qantas 4 2026-06-02
QFA156 - 4 2026-07-16
QFA154 Qantas 4 2026-07-23
QFA151 - 4 2026-07-12
QFA147 - 4 2026-07-07
QFA146 - 4 2026-07-18
QFA144 Qantas 4 2026-07-22
QFA134 Qantas 4 2026-07-24
QFA124 Qantas 4 2026-07-06
QFA123 - 4 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 QFA768 PER → MEL Jul 26, 07:05 UTCJul 26, 10:35 UTC3h 30m
2026-07-26 QFA777 MEL → PER Jul 26, 01:55 UTCJul 26, 05:35 UTC3h 40m
2026-07-25 QFA837 DRW → MEL Jul 25, 23:45 UTCJul 26, 00:25 UTC40m
2026-07-25 QFA48 WLG → SYD Jul 25, 14:25 UTCJul 25, 14:35 UTC10m
2026-07-25 QFA47 SYD → WLG Jul 25, 12:30 UTCJul 25, 12:40 UTC10m
2026-07-25 QFA836 MEL → DRW Jul 25, 02:05 UTCJul 25, 02:30 UTC25m
2026-07-24 QFA613 BNE → MEL Jul 24, 22:40 UTCJul 25, 00:35 UTC1h 55m
2026-07-24 QFA134 CHC → BNE Jul 24, 04:00 UTCJul 24, 07:50 UTC3h 50m
2026-07-24 QFA167 MEL → CHC Jul 24, 02:30 UTCJul 24, 02:45 UTC15m
2026-07-23 QFA167 MEL → CHC Jul 23, 23:55 UTCJul 24, 00:25 UTC30m
2026-07-23 QFA168 CHC → MEL Jul 23, 18:40 UTCJul 23, 22:10 UTC3h 30m
2026-07-23 QFA169 MEL → CHC Jul 23, 11:45 UTCJul 23, 11:55 UTC10m
2026-07-23 QFA169 MEL → CHC Jul 23, 09:15 UTCJul 23, 09:40 UTC25m
2026-07-23 QFA154 AKL → MEL Jul 23, 02:15 UTCJul 23, 06:10 UTC3h 55m
2026-07-22 QFA141 SYD → AKL Jul 22, 21:25 UTCJul 22, 23:50 UTC2h 25m
2026-07-22 QFA144 AKL → SYD Jul 22, 01:55 UTCJul 22, 05:20 UTC3h 25m
2026-07-21 QFA141 SYD → AKL Jul 21, 21:55 UTCJul 22, 00:25 UTC2h 30m
2026-07-20 QFA102 NAN → SYD Jul 20, 23:05 UTCJul 21, 08:15 UTC9h 9m
2026-07-20 QFA138 CHC → SYD Jul 20, 20:50 UTCJul 20, 21:40 UTC50m
2026-07-20 QFA138 CHC → SYD Jul 20, 18:30 UTCJul 20, 18:40 UTC10m
2026-07-20 QFA135 BNE → CHC Jul 20, 12:05 UTCJul 20, 12:25 UTC20m
2026-07-20 QFA135 BNE → CHC Jul 20, 09:10 UTCJul 20, 09:55 UTC45m
2026-07-20 QFA126 AKL → BNE Jul 20, 03:30 UTCJul 20, 06:40 UTC3h 10m
2026-07-20 QFA143 SYD → AKL Jul 20, 02:00 UTCJul 20, 02:15 UTC15m
2026-07-19 QFA143 SYD → AKL Jul 19, 23:30 UTCJul 20, 00:05 UTC35m
2026-07-19 QFA746 ADL → SYD Jul 19, 09:45 UTCJul 19, 11:15 UTC1h 30m
2026-07-19 QFA741 SYD → ADL Jul 19, 07:00 UTCJul 19, 08:40 UTC1h 40m
2026-07-18 QFA146 - Jul 18, 06:50 UTCJul 18, 07:35 UTC45m
2026-07-18 QFA146 - Jul 18, 04:25 UTCJul 18, 04:35 UTC10m
2026-07-17 QFA153 MEL → AKL Jul 17, 23:50 UTCJul 18, 03:05 UTC3h 16m
2026-07-17 QFA168 CHC → MEL Jul 17, 18:40 UTCJul 17, 22:05 UTC3h 25m
2026-07-17 QFA135 BNE → CHC Jul 17, 09:10 UTCJul 17, 12:19 UTC3h 10m
2026-07-17 QFA134 - Jul 17, 04:10 UTCJul 17, 07:30 UTC3h 20m
2026-07-17 QFA167 - Jul 17, 02:34 UTCJul 17, 02:45 UTC10m
2026-07-16 QFA167 - Jul 16, 23:44 UTCJul 17, 00:14 UTC30m
2026-07-16 QFA168 CHC → MEL Jul 16, 21:25 UTCJul 16, 22:10 UTC45m
2026-07-16 QFA168 CHC → MEL Jul 16, 18:40 UTCJul 16, 18:50 UTC10m
2026-07-16 QFA169 MEL → CHC Jul 16, 08:50 UTCJul 16, 12:00 UTC3h 10m
2026-07-16 QFA156 - Jul 16, 03:55 UTCJul 16, 07:20 UTC3h 25m
2026-07-16 QFA143 - Jul 16, 02:10 UTCJul 16, 02:30 UTC20m
2026-07-15 QFA143 - Jul 15, 23:25 UTCJul 16, 00:00 UTC35m
2026-07-14 QFA101 SYD → SYD Jul 14, 23:10 UTCJul 15, 08:35 UTC9h 25m
2026-07-14 QFA559 BNE → SYD Jul 14, 11:05 UTCJul 14, 12:15 UTC1h 10m
2026-07-14 QFA186 - Jul 14, 05:35 UTCJul 14, 09:05 UTC3h 30m
2026-07-14 QFA185 - Jul 14, 03:10 UTCJul 14, 03:25 UTC15m
2026-07-14 QFA185 - Jul 14, 00:35 UTCJul 14, 01:20 UTC45m
2026-07-13 QFA120 - Jul 13, 19:05 UTCJul 13, 22:30 UTC3h 25m
2026-07-13 QFA157 - Jul 13, 09:05 UTCJul 13, 12:05 UTC3h 0m
2026-07-13 QFA154 - Jul 13, 01:45 UTCJul 13, 05:45 UTC4h 0m
2026-07-12 QFA151 - Jul 12, 20:55 UTCJul 12, 23:50 UTC2h 55m

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

Mode-S 7C6DE6 frequently asked

What is Mode-S code 7C6DE6?
7C6DE6 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-VZS.
Where is Mode-S 7C6DE6 registered?
Mode-S code 7C6DE6 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C6DE6 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 10:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C6DE6, octal 37066746, decimal 8,154,598.
What flights does 7C6DE6 operate?
Mode-S 7C6DE6 has broadcast 20 distinct callsigns, including QFA138, QFA143, QFA167, QFA141, QFA135.