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 11h ago
Flights observed
320
Distinct callsigns
20
Country
AU
Last broadcast
11h ago

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
QFA760 - 4 2026-06-30
QFA679 - 4 2026-06-21
QFA651 - 4 2026-07-10
QFA151 Qantas 4 2026-06-08
QFA137 Qantas 4 2026-06-06
QFA136 Qantas 4 2026-06-06
QFA92 Qantas 3 2026-06-06
QFA772 - 3 2026-07-13
QFA770 Qantas 3 2026-05-22
QFA769 Qantas 3 2026-04-17
QFA767 Qantas 3 2026-05-22
QFA682 - 3 2026-06-21
QFA642 - 3 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
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
2026-07-09 QFA476 MEL → SYD Jul 9, 08:15 UTCJul 9, 09:40 UTC1h 25m
2026-07-09 QFA453 SYD → MEL Jul 9, 06:10 UTCJul 9, 07:15 UTC1h 5m
2026-07-08 QFA642 PER → SYD Jul 8, 22:30 UTCJul 9, 02:15 UTC3h 45m
2026-07-08 QFA773 MEL → PER Jul 8, 09:15 UTCJul 8, 12:55 UTC3h 40m
2026-07-08 QFA629 BNE → MEL Jul 8, 05:40 UTCJul 8, 07:45 UTC2h 5m
2026-07-07 QFA932 PER → BNE Jul 7, 23:35 UTCJul 8, 03:45 UTC4h 10m
2026-07-07 QFA937 BNE → PER Jul 7, 03:45 UTCJul 7, 09:00 UTC5h 15m
2026-07-06 QFA932 PER → BNE Jul 6, 22:25 UTCJul 7, 02:35 UTC4h 10m
2026-07-06 QFA653 SYD → PER Jul 6, 09:05 UTCJul 6, 13:20 UTC4h 15m
2026-07-06 QFA462 MEL → SYD Jul 6, 06:05 UTCJul 6, 07:25 UTC1h 20m
2026-07-06 QFA623 BNE → MEL Jul 6, 02:30 UTCJul 6, 04:25 UTC1h 55m
2026-07-05 QFA610 MEL → BNE Jul 5, 23:35 UTCJul 6, 01:30 UTC1h 55m
2026-07-05 QFA670 ADL → MEL Jul 5, 20:35 UTCJul 5, 21:40 UTC1h 5m
2026-07-05 QFA888 PER → ADL Jul 5, 09:20 UTCJul 5, 11:45 UTC2h 25m
2026-07-05 QFA889 ADL → PER Jul 5, 05:00 UTCJul 5, 08:00 UTC3h 0m
2026-07-05 QFA683 MEL → ADL Jul 5, 02:55 UTCJul 5, 03:55 UTC1h 0m
2026-07-05 QFA678 - Jul 5, 00:45 UTCJul 5, 01:45 UTC1h 0m
2026-07-04 QFA671 MEL → ADL Jul 4, 20:25 UTCJul 4, 21:25 UTC1h 0m
2026-07-04 QFA631 BNE → MEL Jul 4, 06:30 UTCJul 4, 08:35 UTC2h 5m
2026-07-04 QFA618 MEL → BNE Jul 4, 03:35 UTCJul 4, 05:20 UTC1h 45m
2026-07-04 QFA619 - Jul 4, 00:10 UTCJul 4, 02:20 UTC2h 10m
2026-07-03 QFA504 - Jul 3, 21:20 UTCJul 3, 22:30 UTC1h 10m
2026-07-03 QFA480 MEL → SYD Jul 3, 08:50 UTCJul 3, 09:50 UTC1h 0m
2026-07-03 QFA461 SYD → MEL Jul 3, 06:40 UTCJul 3, 07:45 UTC1h 5m
2026-07-03 QFA579 - Jul 3, 03:15 UTCJul 3, 05:25 UTC2h 10m
2026-07-03 QFA578 - Jul 3, 00:05 UTCJul 3, 02:10 UTC2h 5m
2026-07-02 QFA412 MEL → SYD Jul 2, 21:30 UTCJul 2, 22:30 UTC1h 0m
2026-07-02 QFA158 - Jul 2, 08:35 UTCJul 2, 12:15 UTC3h 40m
2026-07-02 QFA155 - Jul 2, 03:50 UTCJul 2, 06:55 UTC3h 5m
2026-07-02 QFA429 - Jul 2, 00:00 UTCJul 2, 01:10 UTC1h 10m
2026-07-01 QFA412 MEL → SYD Jul 1, 21:20 UTCJul 1, 22:30 UTC1h 10m
2026-07-01 QFA158 - Jul 1, 08:30 UTCJul 1, 12:20 UTC3h 50m
2026-07-01 QFA155 - Jul 1, 04:30 UTCJul 1, 07:05 UTC2h 35m
2026-07-01 QFA155 - Jul 1, 04:00 UTCJul 1, 04:25 UTC25m
2026-06-30 QFA760 PER → MEL Jun 30, 22:50 UTCJul 1, 02:00 UTC3h 10m
2026-06-30 QFA651 - Jun 30, 10:55 UTCJun 30, 11:30 UTC35m

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 11h ago.
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.