Apparatus

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sensors Mode-S transponder

7C6DC9

ICAO 24-bit transponder address · allocated to Australia

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

Hex
7C6DC9
Octal
37066711
Decimal
8,154,569
Country
AU
Tail
VH-VYZ
Type
B738
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
356
Distinct callsigns
20
Country
AU
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S 7C6DC9.

Country allocation

The ICAO 24-bit address 7C6DC9 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
QFA171 - 11 2026-06-29
QFA172 - 7 2026-06-29
QFA155 - 7 2026-07-02
QFA158 - 6 2026-07-02
QFA148 - 5 2026-06-26
QFA145 - 5 2026-06-26
QFA932 - 4 2026-07-07
QFA772 Qantas 4 2026-07-24
QFA760 - 4 2026-06-30
QFA679 - 4 2026-06-21
QFA651 - 4 2026-07-10
QFA621 - 4 2026-07-18
QFA462 Qantas 4 2026-07-25
QFA164 Qantas 4 2026-07-21
QFA163 Qantas 4 2026-07-21
QFA162 Qantas 4 2026-07-21
QFA161 Qantas 4 2026-07-21
QFA151 Qantas 4 2026-06-08
QFA137 Qantas 4 2026-06-06
QFA136 Qantas 4 2026-06-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 QFA604 MEL → BNE Jul 26, 21:05 UTCJul 26, 22:15 UTC1h 10m
2026-07-26 QFA465 SYD → MEL Jul 26, 06:50 UTCJul 26, 08:05 UTC1h 15m
2026-07-26 QFA450 MEL → SYD Jul 26, 04:35 UTCJul 26, 05:55 UTC1h 20m
2026-07-26 QFA439 SYD → MEL Jul 26, 02:20 UTCJul 26, 03:20 UTC1h 0m
2026-07-25 QFA462 MEL → SYD Jul 25, 06:10 UTCJul 25, 07:10 UTC1h 0m
2026-07-25 QFA437 SYD → MEL Jul 25, 01:40 UTCJul 25, 02:50 UTC1h 10m
2026-07-24 QFA416 MEL → SYD Jul 24, 22:55 UTCJul 25, 00:15 UTC1h 20m
2026-07-24 QFA772 PER → MEL Jul 24, 10:00 UTCJul 24, 13:25 UTC3h 25m
2026-07-24 QFA78 SIN → PER Jul 24, 02:50 UTCJul 24, 07:45 UTC4h 55m
2026-07-23 QFA77 - Jul 23, 15:30 UTCJul 23, 20:25 UTC4h 55m
2026-07-23 QFA849 DRW → PER Jul 23, 10:15 UTCJul 23, 11:00 UTC45m
2026-07-23 QFA836 MEL → DRW Jul 23, 02:10 UTCJul 23, 02:40 UTC30m
2026-07-22 QFA423 SYD → MEL Jul 22, 23:20 UTCJul 23, 00:30 UTC1h 10m
2026-07-21 QFA101 SYD → NAN Jul 21, 23:10 UTCJul 21, 23:40 UTC30m
2026-07-21 QFA162 WLG → SYD Jul 21, 18:05 UTCJul 21, 21:30 UTC3h 25m
2026-07-21 QFA163 SYD → WLG Jul 21, 08:55 UTCJul 21, 11:35 UTC2h 40m
2026-07-21 QFA164 WLG → SYD Jul 21, 04:00 UTCJul 21, 07:10 UTC3h 10m
2026-07-21 QFA161 SYD → WLG Jul 21, 00:10 UTCJul 21, 02:50 UTC2h 40m
2026-07-20 QFA559 BNE → SYD Jul 20, 11:10 UTCJul 20, 12:25 UTC1h 15m
2026-07-20 QFA624 MEL → BNE Jul 20, 06:20 UTCJul 20, 08:05 UTC1h 45m
2026-07-20 QFA447 - Jul 20, 03:50 UTCJul 20, 05:00 UTC1h 10m
2026-07-20 QFA438 MEL → SYD Jul 20, 01:15 UTCJul 20, 02:15 UTC1h 0m
2026-07-19 QFA674 ADL → MEL Jul 19, 22:20 UTCJul 19, 23:25 UTC1h 5m
2026-07-19 QFA671 MEL → ADL Jul 19, 20:25 UTCJul 19, 21:25 UTC1h 0m
2026-07-19 QFA776 PER → MEL Jul 19, 15:45 UTCJul 19, 18:40 UTC2h 55m
2026-07-19 QFA773 MEL → PER Jul 19, 09:10 UTCJul 19, 13:10 UTC4h 0m
2026-07-18 QFA1051 BME → MEL Jul 18, 22:30 UTCJul 19, 07:40 UTC9h 10m
2026-07-18 QFA471 SYD → MEL Jul 18, 07:30 UTCJul 18, 08:35 UTC1h 5m
2026-07-18 QFA454 MEL → SYD Jul 18, 05:15 UTCJul 18, 06:20 UTC1h 5m
2026-07-18 QFA621 BNE → MEL Jul 18, 01:25 UTCJul 18, 03:25 UTC2h 1m
2026-07-17 QFA608 MEL → BNE Jul 17, 22:20 UTCJul 18, 00:10 UTC1h 50m
2026-07-16 QFA485 SYD → MEL Jul 16, 09:50 UTCJul 16, 10:55 UTC1h 5m
2026-07-16 QFA841 - Jul 16, 06:35 UTCJul 16, 07:50 UTC1h 15m
2026-07-15 QFA840 - Jul 15, 22:20 UTCJul 15, 22:55 UTC35m
2026-07-15 QFA654 PER → SYD Jul 15, 16:15 UTCJul 15, 20:15 UTC4h 0m
2026-07-15 QFA655 SYD → PER Jul 15, 10:35 UTCJul 15, 14:50 UTC4h 15m
2026-07-14 QFA1042 SYD → SYD Jul 14, 00:50 UTCJul 14, 10:30 UTC9h 40m
2026-07-13 QFA416 MEL → SYD Jul 13, 22:00 UTCJul 13, 23:00 UTC1h 0m
2026-07-13 QFA772 PER → MEL Jul 13, 10:00 UTCJul 13, 13:05 UTC3h 5m
2026-07-13 QFA78 - Jul 13, 02:50 UTCJul 13, 07:25 UTC4h 35m
2026-07-12 QFA77 - Jul 12, 15:35 UTCJul 12, 20:45 UTC5h 10m
2026-07-12 QFA891 ADL → PER Jul 12, 09:35 UTCJul 12, 12:35 UTC3h 0m
2026-07-12 QFA886 PER → ADL Jul 12, 06:01 UTCJul 12, 08:30 UTC2h 30m
2026-07-12 QFA887 ADL → PER Jul 12, 01:35 UTCJul 12, 04:30 UTC2h 55m
2026-07-11 QFA671 MEL → ADL Jul 11, 20:20 UTCJul 11, 21:20 UTC1h 0m
2026-07-11 QFA764 PER → MEL Jul 11, 02:45 UTCJul 11, 06:05 UTC3h 20m
2026-07-10 QFA651 SYD → PER Jul 10, 06:20 UTCJul 10, 11:00 UTC4h 40m
2026-07-10 QFA644 PER → SYD Jul 10, 01:20 UTCJul 10, 05:05 UTC3h 45m
2026-07-09 QFA883 ADL → PER Jul 9, 20:40 UTCJul 10, 00:00 UTC3h 20m
2026-07-09 QFA749 SYD → ADL Jul 9, 11:05 UTCJul 9, 12:45 UTC1h 40m

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

Mode-S 7C6DC9 frequently asked

What is Mode-S code 7C6DC9?
7C6DC9 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-VYZ.
Where is Mode-S 7C6DC9 registered?
Mode-S code 7C6DC9 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C6DC9 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C6DC9, octal 37066711, decimal 8,154,569.
What flights does 7C6DC9 operate?
Mode-S 7C6DC9 has broadcast 20 distinct callsigns, including QFA171, QFA172, QFA155, QFA158, QFA148.