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 1h ago
Flights observed
317
Distinct callsigns
20
Country
AU
Last broadcast
1h ago

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 - 6 2026-06-30
QFA158 - 5 2026-07-12
QFA155 - 5 2026-07-12
QFA840 Qantas 4 2026-05-28
QFA161 Qantas 4 2026-06-02
QFA151 - 4 2026-07-12
QFA147 - 4 2026-07-07
QFA141 Qantas 4 2026-05-30
QFA124 Qantas 4 2026-07-06
QFA123 - 4 2026-07-06
QFA889 Qantas 3 2026-05-23
QFA888 Qantas 3 2026-05-23
QFA887 Qantas 3 2026-05-25
QFA841 Qantas 3 2026-05-28
QFA836 - 3 2026-07-04
QFA735 Qantas 3 2026-05-29
QFA651 Qantas 3 2026-05-17
QFA644 Qantas 3 2026-05-17
QFA579 Qantas 3 2026-04-21
QFA578 Qantas 3 2026-05-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 QFA186 - Jul 14, 05:35 UTCJul 14, 05:50 UTC15m
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
2026-07-12 QFA158 - Jul 12, 08:40 UTCJul 12, 12:30 UTC3h 50m
2026-07-12 QFA155 - Jul 12, 03:55 UTCJul 12, 07:01 UTC3h 5m
2026-07-11 QFA686 ADL → MEL Jul 11, 05:05 UTCJul 11, 06:10 UTC1h 5m
2026-07-11 QFA683 MEL → ADL Jul 11, 03:01 UTCJul 11, 04:10 UTC1h 10m
2026-07-10 QFA473 SYD → MEL Jul 10, 08:15 UTCJul 10, 09:30 UTC1h 15m
2026-07-10 QFA729 SYD → SYD Jul 10, 00:05 UTCJul 10, 07:05 UTC7h 0m
2026-07-09 QFA589 - Jul 9, 21:10 UTCJul 9, 22:35 UTC1h 25m
2026-07-09 QFA598 - Jul 9, 09:50 UTCJul 9, 10:55 UTC1h 5m
2026-07-09 QFA470 MEL → SYD Jul 9, 07:20 UTCJul 9, 08:35 UTC1h 15m
2026-07-09 QFA451 SYD → MEL Jul 9, 05:25 UTCJul 9, 06:30 UTC1h 5m
2026-07-09 QFA444 MEL → SYD Jul 9, 02:45 UTCJul 9, 03:50 UTC1h 5m
2026-07-08 QFA615 BNE → MEL Jul 8, 23:25 UTCJul 9, 01:30 UTC2h 5m
2026-07-08 QFA600 MEL → BNE Jul 8, 20:05 UTCJul 8, 22:05 UTC2h 0m
2026-07-08 QFA483 SYD → MEL Jul 8, 08:55 UTCJul 8, 09:55 UTC1h 0m
2026-07-08 QFA122 - Jul 8, 04:10 UTCJul 8, 06:45 UTC2h 35m
2026-07-07 QFA121 - Jul 7, 23:45 UTCJul 8, 02:10 UTC2h 25m
2026-07-07 QFA140 - Jul 7, 18:20 UTCJul 7, 21:35 UTC3h 15m
2026-07-07 QFA147 SYD → AKL Jul 7, 08:20 UTCJul 7, 11:00 UTC2h 40m
2026-07-07 QFA122 - Jul 7, 04:10 UTCJul 7, 06:50 UTC2h 40m
2026-07-07 QFA121 - Jul 7, 00:10 UTCJul 7, 02:40 UTC2h 30m
2026-07-06 QFA124 AKL → BNE Jul 6, 19:20 UTCJul 6, 22:10 UTC2h 50m
2026-07-06 QFA123 - Jul 6, 06:30 UTCJul 6, 09:20 UTC2h 50m
2026-07-06 QFA144 - Jul 6, 01:30 UTCJul 6, 04:25 UTC2h 55m
2026-07-05 QFA151 MEL → AKL Jul 5, 20:50 UTCJul 6, 00:10 UTC3h 20m
2026-07-05 QFA158 - Jul 5, 08:50 UTCJul 5, 12:30 UTC3h 40m
2026-07-05 QFA155 MEL → AKL Jul 5, 03:50 UTCJul 5, 06:55 UTC3h 5m
2026-07-05 QFA837 - Jul 5, 00:05 UTCJul 5, 00:40 UTC35m
2026-07-04 QFA836 - Jul 4, 02:25 UTCJul 4, 03:25 UTC1h 0m
2026-07-03 QFA429 - Jul 3, 23:55 UTCJul 4, 01:15 UTC1h 20m
2026-07-03 QFA474 MEL → SYD Jul 3, 09:25 UTCJul 3, 10:25 UTC1h 0m
2026-07-03 QFA154 - Jul 3, 01:45 UTCJul 3, 05:25 UTC3h 40m
2026-07-02 QFA151 MEL → AKL Jul 2, 20:50 UTCJul 2, 23:55 UTC3h 5m
2026-07-02 QFA696 ADL → MEL Jul 2, 11:05 UTCJul 2, 12:05 UTC1h 0m
2026-07-02 QFA693 MEL → ADL Jul 2, 08:55 UTCJul 2, 10:05 UTC1h 10m
2026-07-02 QFA178 - Jul 2, 03:45 UTCJul 2, 07:05 UTC3h 20m
2026-07-01 QFA177 MEL → ZQN Jul 1, 23:40 UTCJul 2, 02:20 UTC2h 40m
2026-07-01 QFA473 SYD → MEL Jul 1, 08:00 UTCJul 1, 09:20 UTC1h 20m
2026-07-01 QFA728 SYD → SYD Jul 1, 00:10 UTCJul 1, 06:55 UTC6h 45m
2026-06-30 QFA138 - Jun 30, 20:30 UTCJun 30, 21:15 UTC45m
2026-06-30 QFA138 - Jun 30, 18:20 UTCJun 30, 18:30 UTC10m
2026-06-30 QFA135 - Jun 30, 11:55 UTCJun 30, 12:10 UTC15m
2026-06-30 QFA135 - Jun 30, 09:10 UTCJun 30, 09:50 UTC40m
2026-06-30 QFA184 BNE → BNE Jun 30, 01:55 UTCJun 30, 07:20 UTC5h 25m

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 1h ago.
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, QFA158, QFA155, QFA840, QFA161.