Apparatus

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sensors Mode-S transponder

7C6DB9

ICAO 24-bit transponder address · allocated to Australia

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

Hex
7C6DB9
Octal
37066671
Decimal
8,154,553
Country
AU
Tail
VH-VYJ
Type
B738
Broadcasting now · callsign QFA741 · 17,675 ft
Flights observed
451
Distinct callsigns
20
Country
AU
Last broadcast
Jul 26, 22:15 UTC

Current position

7C6DB9 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 7C6DB9 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
QFA736 Qantas 9 2026-07-25
QFA731 Qantas 9 2026-07-23
QFA737 Qantas 8 2026-07-26
QFA694 - 7 2026-07-18
QFA691 - 7 2026-07-18
QFA742 Qantas 6 2026-07-26
QFA739 Qantas 6 2026-07-23
QFA425 - 6 2026-07-10
QFA404 - 6 2026-07-06
QFA623 - 5 2026-07-17
QFA621 - 5 2026-07-02
QFA608 Qantas 5 2026-07-19
QFA524 - 5 2026-07-10
QFA483 - 5 2026-07-20
QFA824 Qantas 4 2026-05-28
QFA744 Qantas 4 2026-07-23
QFA740 - 4 2026-07-03
QFA703 Qantas 4 2026-05-14
QFA702 Qantas 4 2026-05-13
QFA690 - 4 2026-06-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 QFA590 PER → ADL Jul 26, 21:15 UTCJul 26, 22:15 UTC1h 0m
2026-07-26 QFA587 ADL → PER Jul 26, 10:10 UTCJul 26, 11:10 UTC1h 0m
2026-07-26 QFA586 SYD → OOL Jul 26, 08:10 UTCJul 26, 09:15 UTC1h 5m
2026-07-26 QFA742 MEL → CBR Jul 26, 05:30 UTCJul 26, 07:10 UTC1h 41m
2026-07-26 QFA737 CBR → ADL Jul 26, 03:05 UTCJul 26, 04:40 UTC1h 35m
2026-07-25 QFA736 ADL → SYD Jul 25, 23:20 UTCJul 26, 01:05 UTC1h 45m
2026-07-25 QFA671 MEL → ADL Jul 25, 20:20 UTCJul 25, 21:25 UTC1h 5m
2026-07-25 QFA704 MEL → CNS Jul 25, 03:05 UTCJul 25, 10:05 UTC7h 0m
2026-07-25 QFA678 ADL → MEL Jul 25, 00:55 UTCJul 25, 02:00 UTC1h 5m
2026-07-24 QFA675 MEL → ADL Jul 24, 23:00 UTCJul 25, 00:00 UTC1h 0m
2026-07-24 QFA475 MEL → PER Jul 24, 08:10 UTCJul 24, 09:20 UTC1h 10m
2026-07-24 QFA742 MEL → CBR Jul 24, 05:00 UTCJul 24, 06:25 UTC1h 25m
2026-07-24 QFA737 CBR → ADL Jul 24, 03:25 UTCJul 24, 03:50 UTC25m
2026-07-24 QFA737 CBR → ADL Jul 24, 02:10 UTCJul 24, 02:45 UTC35m
2026-07-23 QFA736 ADL → SYD Jul 23, 23:30 UTCJul 24, 00:55 UTC1h 25m
2026-07-23 QFA731 SYD → ADL Jul 23, 21:55 UTCJul 23, 22:20 UTC25m
2026-07-23 QFA731 SYD → ADL Jul 23, 20:25 UTCJul 23, 21:05 UTC40m
2026-07-23 QFA744 ADL → SYD Jul 23, 07:45 UTCJul 23, 09:15 UTC1h 30m
2026-07-23 QFA739 SYD → ADL Jul 23, 06:25 UTCJul 23, 06:45 UTC20m
2026-07-23 QFA739 SYD → ADL Jul 23, 04:55 UTCJul 23, 05:35 UTC40m
2026-07-22 QFA451 SYD → MEL Jul 22, 05:00 UTCJul 22, 05:25 UTC25m
2026-07-22 QFA444 MEL → SYD Jul 22, 02:40 UTCJul 22, 03:40 UTC1h 0m
2026-07-21 QFA615 BNE → MEL Jul 21, 23:20 UTCJul 22, 01:40 UTC2h 20m
2026-07-21 QFA558 SYD → BNE Jul 21, 12:15 UTCJul 21, 13:25 UTC1h 10m
2026-07-21 QFA545 BNE → SYD Jul 21, 07:45 UTCJul 21, 09:05 UTC1h 20m
2026-07-21 QFA618 MEL → BNE Jul 21, 03:55 UTCJul 21, 05:45 UTC1h 50m
2026-07-21 QFA433 SYD → MEL Jul 21, 00:40 UTCJul 21, 01:55 UTC1h 15m
2026-07-20 QFA416 MEL → SYD Jul 20, 22:00 UTCJul 20, 23:05 UTC1h 5m
2026-07-20 QFA483 - Jul 20, 09:25 UTCJul 20, 10:30 UTC1h 5m
2026-07-20 QFA468 MEL → SYD Jul 20, 07:05 UTCJul 20, 08:10 UTC1h 5m
2026-07-20 QFA449 SYD → MEL Jul 20, 05:00 UTCJul 20, 06:10 UTC1h 10m
2026-07-20 QFA523 BNE → SYD Jul 20, 02:35 UTCJul 20, 03:50 UTC1h 15m
2026-07-19 QFA608 MEL → BNE Jul 19, 22:10 UTCJul 19, 23:55 UTC1h 45m
2026-07-19 QFA479 SYD → MEL Jul 19, 08:30 UTCJul 19, 09:40 UTC1h 10m
2026-07-19 QFA595 ADL → PER Jul 19, 06:10 UTCJul 19, 07:10 UTC1h 0m
2026-07-19 QFA594 PER → BNE Jul 19, 03:50 UTCJul 19, 05:05 UTC1h 15m
2026-07-19 QFA436 MEL → SYD Jul 19, 00:55 UTCJul 19, 02:00 UTC1h 5m
2026-07-18 QFA694 ADL → MEL Jul 18, 09:05 UTCJul 18, 10:10 UTC1h 5m
2026-07-18 QFA691 MEL → ADL Jul 18, 07:10 UTCJul 18, 08:15 UTC1h 5m
2026-07-18 QFA686 ADL → MEL Jul 18, 05:00 UTCJul 18, 05:55 UTC55m
2026-07-18 QFA683 MEL → ADL Jul 18, 02:55 UTCJul 18, 03:55 UTC1h 0m
2026-07-17 QFA613 BNE → MEL Jul 17, 22:15 UTCJul 18, 00:15 UTC2h 0m
2026-07-17 QFA624 MEL → BNE Jul 17, 06:15 UTCJul 17, 08:15 UTC2h 0m
2026-07-17 QFA623 BNE → MEL Jul 17, 02:34 UTCJul 17, 04:35 UTC2h 0m
2026-07-16 QFA610 MEL → BNE Jul 16, 23:40 UTCJul 17, 01:39 UTC2h 0m
2026-07-16 QFA694 ADL → MEL Jul 16, 09:15 UTCJul 16, 10:10 UTC55m
2026-07-16 QFA691 MEL → ADL Jul 16, 07:05 UTCJul 16, 08:05 UTC1h 0m
2026-07-16 QFA686 ADL → MEL Jul 16, 05:10 UTCJul 16, 06:05 UTC55m
2026-07-16 QFA683 MEL → ADL Jul 16, 03:10 UTCJul 16, 04:15 UTC1h 5m
2026-07-16 QFA678 ADL → MEL Jul 16, 00:50 UTCJul 16, 02:00 UTC1h 10m

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

Mode-S 7C6DB9 frequently asked

What is Mode-S code 7C6DB9?
7C6DB9 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-VYJ.
Where is Mode-S 7C6DB9 registered?
Mode-S code 7C6DB9 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C6DB9 broadcasting right now?
Yes. Mode-S 7C6DB9 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C6DB9, octal 37066671, decimal 8,154,553.
What flights does 7C6DB9 operate?
Mode-S 7C6DB9 has broadcast 20 distinct callsigns, including QFA736, QFA731, QFA737, QFA694, QFA691.