Apparatus

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sensors Mode-S transponder

7C6DD9

ICAO 24-bit transponder address · allocated to Australia

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

Hex
7C6DD9
Octal
37066731
Decimal
8,154,585
Country
AU
Tail
VH-VZF
Type
B738
Broadcasting now · callsign QFA545 · 24,700 ft
Flights observed
355
Distinct callsigns
20
Country
AU
Last broadcast
Jul 26, 22:15 UTC

Current position

7C6DD9 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 7C6DD9 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
QFA166 Qantas 6 2026-06-14
QFA165 Qantas 5 2026-06-13
QFA134 Qantas 5 2026-04-16
QFA942 Qantas 4 2026-07-06
QFA883 - 4 2026-07-05
QFA644 - 4 2026-07-06
QFA151 Qantas 4 2026-06-24
QFA145 - 4 2026-06-28
QFA935 Qantas 3 2026-07-25
QFA857 - 3 2026-07-20
QFA856 - 3 2026-07-20
QFA776 - 3 2026-07-10
QFA761 - 3 2026-07-10
QFA651 - 3 2026-07-06
QFA642 - 3 2026-06-29
QFA637 Qantas 3 2026-05-15
QFA614 Qantas 3 2026-07-24
QFA595 - 3 2026-06-30
QFA594 - 3 2026-06-30
QFA57 Qantas 3 2026-05-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 QFA840 SYD → DRW Jul 26, 22:05 UTCJul 26, 22:15 UTC10m
2026-07-26 QFA484 MEL → SYD Jul 26, 10:20 UTCJul 26, 11:25 UTC1h 5m
2026-07-25 QFA1050 MEL → BME Jul 25, 22:45 UTCJul 26, 08:35 UTC9h 51m
2026-07-25 QFA770 PER → MEL Jul 25, 09:00 UTCJul 25, 12:20 UTC3h 20m
2026-07-25 QFA935 BNE → PER Jul 25, 01:15 UTCJul 25, 04:20 UTC3h 5m
2026-07-24 QFA935 BNE → PER Jul 24, 23:20 UTCJul 25, 00:20 UTC1h 0m
2026-07-24 QFA628 MEL → BNE Jul 24, 08:30 UTCJul 24, 10:15 UTC1h 45m
2026-07-24 QFA627 BNE → MEL Jul 24, 04:30 UTCJul 24, 06:50 UTC2h 20m
2026-07-24 QFA614 MEL → BNE Jul 24, 01:30 UTCJul 24, 03:20 UTC1h 50m
2026-07-23 QFA613 BNE → MEL Jul 23, 22:10 UTCJul 24, 00:30 UTC2h 20m
2026-07-23 QFA546 SYD → BNE Jul 23, 07:55 UTCJul 23, 09:10 UTC1h 15m
2026-07-23 QFA922 SYD → CNS Jul 23, 00:30 UTCJul 23, 06:45 UTC6h 15m
2026-07-22 QFA412 MEL → SYD Jul 22, 21:15 UTCJul 22, 22:15 UTC1h 0m
2026-07-22 QFA767 BNE → PER Jul 22, 03:35 UTCJul 22, 12:10 UTC8h 35m
2026-07-21 QFA674 ADL → MEL Jul 21, 22:30 UTCJul 21, 23:25 UTC55m
2026-07-21 QFA671 MEL → ADL Jul 21, 20:30 UTCJul 21, 21:35 UTC1h 5m
2026-07-21 QFA770 PER → MEL Jul 21, 09:00 UTCJul 21, 12:05 UTC3h 5m
2026-07-21 QFA767 BNE → PER Jul 21, 03:05 UTCJul 21, 06:55 UTC3h 50m
2026-07-20 QFA760 PER → MEL Jul 20, 22:45 UTCJul 21, 01:45 UTC2h 59m
2026-07-20 QFA857 - Jul 20, 10:15 UTCJul 20, 14:35 UTC4h 20m
2026-07-20 QFA856 - Jul 20, 05:55 UTCJul 20, 09:15 UTC3h 20m
2026-07-20 QFA765 SYD → ADL Jul 20, 00:30 UTCJul 20, 04:45 UTC4h 15m
2026-07-19 QFA409 SYD → MEL Jul 19, 21:25 UTCJul 19, 22:35 UTC1h 10m
2026-07-19 QFA654 PER → SYD Jul 19, 16:15 UTCJul 19, 20:05 UTC3h 50m
2026-07-19 QFA655 CNS → BNE Jul 19, 10:05 UTCJul 19, 14:40 UTC4h 35m
2026-07-19 QFA92 NOU → SYD Jul 19, 04:30 UTCJul 19, 05:50 UTC1h 20m
2026-07-18 QFA91 SYD → NOU Jul 18, 23:15 UTCJul 19, 00:15 UTC1h 0m
2026-07-18 QFA164 - Jul 18, 04:15 UTCJul 18, 07:15 UTC3h 0m
2026-07-18 QFA161 SYD → WLG Jul 18, 00:19 UTCJul 18, 03:05 UTC2h 46m
2026-07-15 QFA923 SYD → SYD Jul 15, 23:55 UTCJul 16, 06:15 UTC6h 20m
2026-07-15 QFA730 ADL → SYD Jul 15, 20:35 UTCJul 15, 22:20 UTC1h 45m
2026-07-15 QFA697 MEL → ADL Jul 15, 09:25 UTCJul 15, 10:20 UTC55m
2026-07-15 QFA467 SYD → MEL Jul 15, 07:15 UTCJul 15, 08:20 UTC1h 5m
2026-07-15 QFA535 BNE → SYD Jul 15, 04:45 UTCJul 15, 05:55 UTC1h 10m
2026-07-15 QFA614 MEL → BNE Jul 15, 01:40 UTCJul 15, 03:35 UTC1h 55m
2026-07-14 QFA421 SYD → MEL Jul 14, 22:40 UTCJul 14, 23:45 UTC1h 4m
2026-07-14 QFA654 PER → SYD Jul 14, 16:00 UTCJul 14, 20:10 UTC4h 10m
2026-07-14 QFA849 - Jul 14, 10:50 UTCJul 14, 11:40 UTC50m
2026-07-14 QFA848 - Jul 14, 03:25 UTCJul 14, 03:55 UTC30m
2026-07-13 QFA1388 PER → PER Jul 13, 21:50 UTCJul 14, 01:40 UTC3h 50m
2026-07-13 QFA941 BNE → PER Jul 13, 08:30 UTCJul 13, 13:30 UTC5h 0m
2026-07-13 QFA864 BNE → BNE Jul 13, 02:55 UTCJul 13, 07:15 UTC4h 20m
2026-07-12 QFA750 BNE → BNE Jul 12, 20:50 UTCJul 13, 01:05 UTC4h 15m
2026-07-12 QFA827 - Jul 12, 18:30 UTCJul 12, 19:30 UTC1h 0m
2026-07-12 QFA826 - Jul 12, 10:40 UTCJul 12, 11:10 UTC30m
2026-07-12 QFA58 BNE → BNE Jul 12, 00:35 UTCJul 12, 07:20 UTC6h 45m
2026-07-11 QFA936 PER → BNE Jul 11, 02:50 UTCJul 11, 06:35 UTC3h 45m
2026-07-10 QFA761 MEL → PER Jul 10, 20:20 UTCJul 11, 00:05 UTC3h 45m
2026-07-10 QFA776 PER → MEL Jul 10, 15:55 UTCJul 10, 19:05 UTC3h 10m
2026-07-10 QFA857 - Jul 10, 10:10 UTCJul 10, 14:30 UTC4h 20m

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

Mode-S 7C6DD9 frequently asked

What is Mode-S code 7C6DD9?
7C6DD9 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-VZF.
Where is Mode-S 7C6DD9 registered?
Mode-S code 7C6DD9 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C6DD9 broadcasting right now?
Yes. Mode-S 7C6DD9 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C6DD9, octal 37066731, decimal 8,154,585.
What flights does 7C6DD9 operate?
Mode-S 7C6DD9 has broadcast 20 distinct callsigns, including QFA166, QFA165, QFA134, QFA942, QFA883.