Apparatus

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sensors Mode-S transponder

7C6DBA

ICAO 24-bit transponder address · allocated to Australia

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

Hex
7C6DBA
Octal
37066672
Decimal
8,154,554
Country
AU
Tail
VH-VYK
Type
B738
No current signal · last broadcast 42m ago
Flights observed
375
Distinct callsigns
20
Country
AU
Last broadcast
42m ago

Last known position

Most recent position reported by Mode-S 7C6DBA.

Country allocation

The ICAO 24-bit address 7C6DBA 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
QFA739 - 9 2026-07-06
QFA738 - 8 2026-07-11
QFA442 - 8 2026-06-23
QFA589 - 7 2026-06-27
QFA451 - 7 2026-07-01
QFA744 - 6 2026-07-06
QFA733 - 6 2026-07-10
QFA767 - 5 2026-06-30
QFA629 Qantas 5 2026-06-08
QFA615 Qantas 5 2026-05-17
QFA598 Qantas 5 2026-05-27
QFA593 - 5 2026-07-06
QFA592 - 5 2026-07-06
QFA512 - 5 2026-07-07
QFA749 - 4 2026-07-06
QFA730 - 4 2026-07-07
QFA691 - 4 2026-07-12
QFA596 - 4 2026-06-29
QFA503 Qantas 4 2026-06-09
QFA470 - 4 2026-07-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 QFA763 MEL → PER Jul 13, 22:05 UTCJul 14, 01:55 UTC3h 50m
2026-07-12 QFA1051 MEL → MEL Jul 12, 22:40 UTCJul 13, 07:45 UTC9h 5m
2026-07-12 QFA839 - Jul 12, 20:01 UTCJul 12, 20:40 UTC40m
2026-07-12 QFA838 - Jul 12, 11:45 UTCJul 12, 12:45 UTC1h 0m
2026-07-12 QFA694 - Jul 12, 09:15 UTCJul 12, 10:25 UTC1h 10m
2026-07-12 QFA691 MEL → ADL Jul 12, 07:05 UTCJul 12, 08:10 UTC1h 5m
2026-07-12 QFA682 ADL → MEL Jul 12, 05:05 UTCJul 12, 06:05 UTC1h 0m
2026-07-12 QFA679 MEL → ADL Jul 12, 00:40 UTCJul 12, 01:50 UTC1h 10m
2026-07-11 QFA670 ADL → MEL Jul 11, 20:35 UTCJul 11, 21:30 UTC55m
2026-07-11 QFA741 SYD → ADL Jul 11, 06:55 UTCJul 11, 08:40 UTC1h 45m
2026-07-11 QFA738 ADL → SYD Jul 11, 02:35 UTCJul 11, 04:05 UTC1h 30m
2026-07-10 QFA733 SYD → ADL Jul 10, 23:50 UTCJul 11, 01:35 UTC1h 45m
2026-07-10 QFA466 MEL → SYD Jul 10, 06:50 UTCJul 10, 08:25 UTC1h 35m
2026-07-10 QFA445 SYD → MEL Jul 10, 03:25 UTCJul 10, 04:25 UTC1h 0m
2026-07-09 QFA642 PER → SYD Jul 9, 22:20 UTCJul 10, 02:05 UTC3h 45m
2026-07-09 QFA891 - Jul 9, 10:30 UTCJul 9, 13:40 UTC3h 10m
2026-07-09 QFA741 SYD → ADL Jul 9, 07:45 UTCJul 9, 09:35 UTC1h 50m
2026-07-09 QFA535 BNE → SYD Jul 9, 05:05 UTCJul 9, 06:25 UTC1h 20m
2026-07-09 QFA524 SYD → BNE Jul 9, 02:35 UTCJul 9, 03:45 UTC1h 10m
2026-07-08 QFA591 - Jul 8, 23:35 UTCJul 9, 00:50 UTC1h 15m
2026-07-08 QFA590 PER → ADL Jul 8, 21:25 UTCJul 8, 22:25 UTC1h 0m
2026-07-08 QFA925 SYD → SYD Jul 8, 04:35 UTCJul 8, 10:50 UTC6h 15m
2026-07-08 QFA523 BNE → SYD Jul 8, 01:50 UTCJul 8, 03:00 UTC1h 10m
2026-07-07 QFA512 SYD → BNE Jul 7, 23:40 UTCJul 8, 00:45 UTC1h 5m
2026-07-07 QFA730 - Jul 7, 20:35 UTCJul 7, 22:15 UTC1h 40m
2026-07-07 QFA888 PER → ADL Jul 7, 09:20 UTCJul 7, 11:55 UTC2h 35m
2026-07-07 QFA889 ADL → PER Jul 7, 05:05 UTCJul 7, 08:00 UTC2h 55m
2026-07-07 QFA884 PER → ADL Jul 7, 01:30 UTCJul 7, 04:10 UTC2h 40m
2026-07-06 QFA883 ADL → PER Jul 6, 20:50 UTCJul 6, 23:40 UTC2h 50m
2026-07-06 QFA749 SYD → ADL Jul 6, 11:15 UTCJul 6, 12:55 UTC1h 40m
2026-07-06 QFA744 ADL → SYD Jul 6, 07:50 UTCJul 6, 09:40 UTC1h 50m
2026-07-06 QFA739 SYD → ADL Jul 6, 05:10 UTCJul 6, 06:45 UTC1h 35m
2026-07-06 QFA593 - Jul 6, 02:15 UTCJul 6, 03:20 UTC1h 5m
2026-07-06 QFA592 - Jul 6, 00:15 UTCJul 6, 01:15 UTC1h 0m
2026-07-05 QFA408 MEL → SYD Jul 5, 21:25 UTCJul 5, 22:50 UTC1h 25m
2026-07-05 QFA917 MCY → MEL Jul 5, 09:05 UTCJul 5, 11:10 UTC2h 5m
2026-07-05 QFA916 MEL → MCY Jul 5, 05:50 UTCJul 5, 07:55 UTC2h 5m
2026-07-05 QFA919 MCY → MEL Jul 5, 02:20 UTCJul 5, 04:30 UTC2h 10m
2026-07-04 QFA918 MEL → MCY Jul 4, 23:05 UTCJul 5, 01:05 UTC2h 0m
2026-07-04 QFA766 PER → MEL Jul 4, 05:40 UTCJul 4, 09:00 UTC3h 20m
2026-07-03 QFA763 MEL → PER Jul 3, 23:15 UTCJul 4, 02:45 UTC3h 30m
2026-07-03 QFA670 ADL → MEL Jul 3, 20:40 UTCJul 3, 21:40 UTC1h 0m
2026-07-03 QFA745 SYD → ADL Jul 3, 09:10 UTCJul 3, 10:45 UTC1h 35m
2026-07-03 QFA458 MEL → SYD Jul 3, 06:35 UTCJul 3, 07:50 UTC1h 15m
2026-07-03 QFA443 SYD → MEL Jul 3, 03:00 UTCJul 3, 04:15 UTC1h 15m
2026-07-02 QFA736 ADL → SYD Jul 2, 23:40 UTCJul 3, 01:05 UTC1h 25m
2026-07-02 QFA731 SYD → ADL Jul 2, 20:40 UTCJul 2, 22:35 UTC1h 55m
2026-07-02 QFA924 SYD → SYD Jul 2, 04:50 UTCJul 2, 12:45 UTC7h 55m
2026-07-02 QFA593 - Jul 2, 01:40 UTCJul 2, 02:55 UTC1h 15m
2026-07-01 QFA592 - Jul 1, 23:35 UTCJul 2, 00:35 UTC1h 0m

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

Mode-S 7C6DBA frequently asked

What is Mode-S code 7C6DBA?
7C6DBA is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-VYK.
Where is Mode-S 7C6DBA registered?
Mode-S code 7C6DBA is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C6DBA broadcasting right now?
No active broadcast right now. Last signal was 42m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C6DBA, octal 37066672, decimal 8,154,554.
What flights does 7C6DBA operate?
Mode-S 7C6DBA has broadcast 20 distinct callsigns, including QFA739, QFA738, QFA442, QFA589, QFA451.