Apparatus

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sensors Mode-S transponder

7C6D91

ICAO 24-bit transponder address · allocated to Australia

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

Hex
7C6D91
Octal
37066621
Decimal
8,154,513
Country
AU
Tail
VH-VXF
Type
B738
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
366
Distinct callsigns
20
Country
AU
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S 7C6D91.

Country allocation

The ICAO 24-bit address 7C6D91 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
QFA651 - 9 2026-07-16
QFA644 Qantas 8 2026-07-22
QFA934 - 7 2026-06-24
QFA937 Qantas 6 2026-07-23
QFA466 - 6 2026-06-17
QFA653 - 5 2026-06-25
QFA436 - 5 2026-07-07
QFA941 Qantas 4 2026-04-15
QFA940 Qantas 4 2026-07-23
QFA749 Qantas 4 2026-07-21
QFA631 - 4 2026-06-28
QFA558 Qantas 4 2026-05-11
QFA485 Qantas 4 2026-06-06
QFA477 - 4 2026-07-07
QFA444 - 4 2026-07-11
QFA932 Qantas 3 2026-05-05
QFA883 Qantas 3 2026-07-21
QFA843 Qantas 3 2026-07-26
QFA842 Qantas 3 2026-07-26
QFA824 Qantas 3 2026-05-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 QFA415 SYD → MEL Jul 26, 22:00 UTCJul 26, 22:15 UTC15m
2026-07-26 QFA843 DRW → SYD Jul 26, 19:10 UTCJul 26, 20:05 UTC55m
2026-07-26 QFA842 SYD → DRW Jul 26, 10:30 UTCJul 26, 11:05 UTC35m
2026-07-26 QFA648 PER → MEL Jul 26, 04:30 UTCJul 26, 08:25 UTC3h 56m
2026-07-25 QFA643 SYD → PER Jul 25, 22:40 UTCJul 26, 03:05 UTC4h 25m
2026-07-25 QFA478 MEL → SYD Jul 25, 08:25 UTCJul 25, 09:35 UTC1h 10m
2026-07-24 QFA702 MEL → CNS Jul 24, 22:40 UTCJul 25, 05:45 UTC7h 5m
2026-07-24 QFA768 PER → MEL Jul 24, 07:05 UTCJul 24, 10:40 UTC3h 35m
2026-07-24 QFA777 MEL → PER Jul 24, 01:45 UTCJul 24, 05:15 UTC3h 30m
2026-07-23 QFA425 SYD → MEL Jul 23, 23:20 UTCJul 24, 00:25 UTC1h 5m
2026-07-23 QFA501 BNE → SYD Jul 23, 20:25 UTCJul 23, 21:40 UTC1h 15m
2026-07-23 QFA940 PER → BNE Jul 23, 10:10 UTCJul 23, 14:00 UTC3h 50m
2026-07-23 QFA937 BNE → PER Jul 23, 03:45 UTCJul 23, 09:05 UTC5h 20m
2026-07-23 QFA612 MEL → BNE Jul 23, 00:40 UTCJul 23, 02:30 UTC1h 50m
2026-07-22 QFA415 SYD → MEL Jul 22, 22:10 UTCJul 22, 23:25 UTC1h 15m
2026-07-22 QFA644 PER → SYD Jul 22, 01:10 UTCJul 22, 04:50 UTC3h 40m
2026-07-21 QFA883 SYD → CBR Jul 21, 20:50 UTCJul 21, 23:55 UTC3h 5m
2026-07-21 QFA749 SYD → ADL Jul 21, 12:35 UTCJul 21, 13:00 UTC25m
2026-07-21 QFA749 SYD → ADL Jul 21, 11:20 UTCJul 21, 11:50 UTC30m
2026-07-21 QFA744 ADL → SYD Jul 21, 08:00 UTCJul 21, 09:30 UTC1h 30m
2026-07-21 QFA739 SYD → ADL Jul 21, 05:15 UTCJul 21, 07:00 UTC1h 45m
2026-07-21 QFA527 BNE → SYD Jul 21, 02:45 UTCJul 21, 04:00 UTC1h 15m
2026-07-21 QFA516 SYD → BNE Jul 21, 00:20 UTCJul 21, 01:40 UTC1h 20m
2026-07-20 QFA732 ADL → SYD Jul 20, 21:05 UTCJul 20, 22:30 UTC1h 25m
2026-07-20 QFA697 MEL → ADL Jul 20, 09:30 UTCJul 20, 10:35 UTC1h 5m
2026-07-20 QFA465 SYD → MEL Jul 20, 06:45 UTCJul 20, 08:00 UTC1h 15m
2026-07-20 QFA533 BNE → SYD Jul 20, 04:15 UTCJul 20, 05:30 UTC1h 15m
2026-07-20 QFA522 SYD → BNE Jul 20, 01:55 UTCJul 20, 02:55 UTC1h 0m
2026-07-19 QFA428 MEL → SYD Jul 19, 23:30 UTCJul 20, 00:30 UTC1h 0m
2026-07-19 QFA768 PER → MEL Jul 19, 07:05 UTCJul 19, 10:15 UTC3h 10m
2026-07-19 QFA777 MEL → PER Jul 19, 01:45 UTCJul 19, 05:50 UTC4h 5m
2026-07-18 QFA705 MEL → MEL Jul 18, 03:00 UTCJul 18, 10:20 UTC7h 20m
2026-07-17 QFA425 SYD → MEL Jul 17, 23:25 UTCJul 18, 00:29 UTC1h 5m
2026-07-17 QFA843 - Jul 17, 19:35 UTCJul 17, 20:25 UTC50m
2026-07-17 QFA826 - Jul 17, 11:39 UTCJul 17, 12:04 UTC25m
2026-07-17 QFA544 SYD → BNE Jul 17, 07:40 UTCJul 17, 08:54 UTC1h 15m
2026-07-17 QFA454 MEL → SYD Jul 17, 05:20 UTCJul 17, 06:29 UTC1h 10m
2026-07-17 QFA762 PER → MEL Jul 17, 00:25 UTCJul 17, 03:25 UTC3h 0m
2026-07-16 QFA651 SYD → PER Jul 16, 06:45 UTCJul 16, 11:30 UTC4h 45m
2026-07-16 QFA738 - Jul 16, 02:30 UTCJul 16, 04:10 UTC1h 40m
2026-07-15 QFA733 SYD → ADL Jul 15, 23:40 UTCJul 16, 01:15 UTC1h 35m
2026-07-15 QFA746 ADL → SYD Jul 15, 09:50 UTCJul 15, 11:30 UTC1h 40m
2026-07-15 QFA741 SYD → ADL Jul 15, 07:00 UTCJul 15, 08:50 UTC1h 50m
2026-07-15 QFA452 MEL → SYD Jul 15, 04:35 UTCJul 15, 05:40 UTC1h 5m
2026-07-15 QFA621 BNE → MEL Jul 15, 01:35 UTCJul 15, 03:35 UTC2h 0m
2026-07-14 QFA608 MEL → BNE Jul 14, 22:25 UTCJul 15, 00:15 UTC1h 49m
2026-07-14 QFA839 - Jul 14, 19:40 UTCJul 14, 20:20 UTC40m
2026-07-14 QFA842 - Jul 14, 10:40 UTCJul 14, 11:20 UTC40m
2026-07-14 QFA545 BNE → SYD Jul 14, 07:45 UTCJul 14, 08:55 UTC1h 10m
2026-07-14 QFA536 SYD → BNE Jul 14, 05:30 UTCJul 14, 06:45 UTC1h 15m

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

Mode-S 7C6D91 frequently asked

What is Mode-S code 7C6D91?
7C6D91 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-VXF.
Where is Mode-S 7C6D91 registered?
Mode-S code 7C6D91 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C6D91 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 7C6D91, octal 37066621, decimal 8,154,513.
What flights does 7C6D91 operate?
Mode-S 7C6D91 has broadcast 20 distinct callsigns, including QFA651, QFA644, QFA934, QFA937, QFA466.