Apparatus

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sensors Mode-S transponder

7C6DE4

ICAO 24-bit transponder address · allocated to Australia

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

Hex
7C6DE4
Octal
37066744
Decimal
8,154,596
Country
AU
Tail
VH-VZQ
Type
B738
No current signal · last broadcast Jul 26, 22:45 UTC
Flights observed
332
Distinct callsigns
20
Country
AU
Last broadcast
Jul 26, 22:45 UTC

Last known position

Most recent position reported by Mode-S 7C6DE4.

Country allocation

The ICAO 24-bit address 7C6DE4 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
QFA946 Qantas 8 2026-06-07
QFA941 - 6 2026-07-07
QFA764 - 6 2026-06-18
QFA171 Qantas 6 2026-07-26
QFA155 - 6 2026-06-20
QFA945 Qantas 5 2026-06-07
QFA172 Qantas 5 2026-07-26
QFA884 - 4 2026-06-14
QFA645 - 4 2026-06-28
QFA161 - 4 2026-06-26
QFA942 Qantas 3 2026-07-09
QFA933 Qantas 3 2026-06-09
QFA837 Qantas 3 2026-05-29
QFA824 - 3 2026-07-07
QFA655 - 3 2026-04-13
QFA650 Qantas 3 2026-07-21
QFA631 - 3 2026-07-17
QFA623 Qantas 3 2026-04-17
QFA618 Qantas 3 2026-07-23
QFA615 Qantas 3 2026-05-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 QFA171 MEL → WLG Jul 26, 22:15 UTCJul 26, 22:45 UTC30m
2026-07-26 QFA045 MEL → DPS Jul 26, 08:10 UTCJul 26, 20:30 UTC12h 20m
2026-07-26 QFA172 WLG → MEL Jul 26, 02:45 UTCJul 26, 06:20 UTC3h 35m
2026-07-25 QFA171 MEL → WLG Jul 25, 22:25 UTCJul 26, 01:35 UTC3h 10m
2026-07-25 QFA172 WLG → MEL Jul 25, 02:35 UTCJul 25, 06:25 UTC3h 50m
2026-07-24 QFA171 MEL → WLG Jul 24, 22:05 UTCJul 25, 01:05 UTC3h 0m
2026-07-24 QFA045 MEL → DPS Jul 24, 08:20 UTCJul 24, 20:40 UTC12h 20m
2026-07-24 QFA172 WLG → MEL Jul 24, 02:55 UTCJul 24, 06:30 UTC3h 35m
2026-07-23 QFA171 MEL → WLG Jul 23, 22:45 UTCJul 24, 01:50 UTC3h 5m
2026-07-23 QFA633 BNE → MEL Jul 23, 07:40 UTCJul 23, 09:55 UTC2h 15m
2026-07-23 QFA618 MEL → BNE Jul 23, 03:30 UTCJul 23, 05:20 UTC1h 50m
2026-07-23 QFA429 SYD → MEL Jul 23, 00:00 UTCJul 23, 01:15 UTC1h 15m
2026-07-22 QFA406 MEL → SYD Jul 22, 20:45 UTCJul 22, 21:45 UTC1h 0m
2026-07-22 QFA742 MEL → CBR Jul 22, 05:05 UTCJul 22, 05:25 UTC20m
2026-07-22 QFA737 CBR → ADL Jul 22, 03:40 UTCJul 22, 04:05 UTC25m
2026-07-22 QFA737 CBR → ADL Jul 22, 02:20 UTCJul 22, 02:50 UTC30m
2026-07-21 QFA736 ADL → SYD Jul 21, 23:20 UTCJul 22, 00:45 UTC1h 25m
2026-07-21 QFA731 SYD → ADL Jul 21, 22:05 UTCJul 21, 22:35 UTC30m
2026-07-21 QFA731 SYD → ADL Jul 21, 20:45 UTCJul 21, 21:15 UTC30m
2026-07-21 QFA650 PER → BNE Jul 21, 07:15 UTCJul 21, 10:50 UTC3h 35m
2026-07-21 QFA765 SYD → ADL Jul 21, 00:35 UTCJul 21, 04:55 UTC4h 20m
2026-07-20 QFA152 - Jul 20, 18:25 UTCJul 20, 22:05 UTC3h 40m
2026-07-20 QFA157 - Jul 20, 12:05 UTCJul 20, 12:20 UTC15m
2026-07-20 QFA157 - Jul 20, 09:15 UTCJul 20, 09:45 UTC30m
2026-07-20 QFA172 WLG → MEL Jul 20, 04:10 UTCJul 20, 07:50 UTC3h 40m
2026-07-19 QFA171 MEL → WLG Jul 19, 22:10 UTCJul 20, 01:20 UTC3h 10m
2026-07-19 QFA046 DPS → MEL Jul 19, 07:55 UTCJul 19, 20:10 UTC12h 15m
2026-07-19 QFA172 WLG → MEL Jul 19, 02:35 UTCJul 19, 06:10 UTC3h 35m
2026-07-18 QFA171 MEL → WLG Jul 18, 22:15 UTCJul 19, 01:25 UTC3h 10m
2026-07-17 QFA1051 BME → MEL Jul 17, 22:35 UTCJul 18, 07:45 UTC9h 11m
2026-07-17 QFA631 BNE → MEL Jul 17, 07:14 UTCJul 17, 09:04 UTC1h 50m
2026-07-17 QFA618 MEL → BNE Jul 17, 03:55 UTCJul 17, 05:55 UTC2h 0m
2026-07-17 QFA619 BNE → MEL Jul 17, 00:20 UTCJul 17, 02:20 UTC2h 0m
2026-07-16 QFA550 SYD → BNE Jul 16, 09:05 UTCJul 16, 10:15 UTC1h 10m
2026-07-16 QFA595 - Jul 16, 06:05 UTCJul 16, 07:10 UTC1h 5m
2026-07-16 QFA594 - Jul 16, 03:50 UTCJul 16, 04:50 UTC1h 0m
2026-07-16 QFA593 - Jul 16, 01:35 UTCJul 16, 02:40 UTC1h 5m
2026-07-15 QFA592 - Jul 15, 23:35 UTCJul 16, 00:35 UTC1h 0m
2026-07-15 QFA468 MEL → SYD Jul 15, 06:55 UTCJul 15, 08:05 UTC1h 10m
2026-07-15 QFA625 BNE → MEL Jul 15, 03:35 UTCJul 15, 05:35 UTC2h 0m
2026-07-14 QFA504 SYD → BNE Jul 14, 21:15 UTCJul 14, 22:25 UTC1h 10m
2026-07-14 QFA746 ADL → SYD Jul 14, 09:50 UTCJul 14, 11:20 UTC1h 30m
2026-07-14 QFA741 SYD → ADL Jul 14, 06:55 UTCJul 14, 08:45 UTC1h 50m
2026-07-14 QFA535 BNE → SYD Jul 14, 04:35 UTCJul 14, 05:45 UTC1h 10m
2026-07-14 QFA614 MEL → BNE Jul 14, 01:25 UTCJul 14, 03:20 UTC1h 55m
2026-07-13 QFA423 SYD → MEL Jul 13, 23:00 UTCJul 14, 00:20 UTC1h 20m
2026-07-13 QFA579 - Jul 13, 03:15 UTCJul 13, 05:15 UTC2h 0m
2026-07-13 QFA578 - Jul 13, 01:55 UTCJul 13, 02:10 UTC15m
2026-07-13 QFA578 - Jul 13, 00:10 UTCJul 13, 00:55 UTC45m
2026-07-12 QFA412 MEL → SYD Jul 12, 21:15 UTCJul 12, 22:20 UTC1h 5m

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

Mode-S 7C6DE4 frequently asked

What is Mode-S code 7C6DE4?
7C6DE4 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-VZQ.
Where is Mode-S 7C6DE4 registered?
Mode-S code 7C6DE4 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C6DE4 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C6DE4, octal 37066744, decimal 8,154,596.
What flights does 7C6DE4 operate?
Mode-S 7C6DE4 has broadcast 20 distinct callsigns, including QFA946, QFA941, QFA764, QFA171, QFA155.