Apparatus

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sensors Mode-S transponder

7C6781

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-UQB · FOKKER 100 · operated by ALLIANCE AIRLINES PTY LIMITED

Hex
7C6781
Octal
37063601
Decimal
8,152,961
Country
AU
Tail
VH-UQB
Type
F100
Transponder active on ground
Flights observed
113
Distinct callsigns
20
Country
AU
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S 7C6781.

Country allocation

The ICAO 24-bit address 7C6781 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
UTY4831 - 17 2026-07-13
UTY4832 - 6 2026-07-08
VOZ9204 - 5 2026-07-06
VOZ9203 - 5 2026-07-13
UTY751 Alliance Airlines 5 2026-05-27
UTY737 - 5 2026-07-08
UTY6300 - 5 2026-06-25
UTY750 Alliance Airlines 4 2026-05-26
UTY6301 Alliance Airlines 4 2026-06-25
UTY753 Alliance Airlines 3 2026-05-27
UTY752 Alliance Airlines 3 2026-05-27
UTY6526 - 3 2026-05-14
UTY6081 - 3 2026-06-17
UTY6080 - 3 2026-06-17
UTY953 Alliance Airlines 2 2026-06-02
UTY733 - 2 2026-07-07
UTY731 - 2 2026-05-19
UTY6527 - 2 2026-07-14
UTY6303 Alliance Airlines 2 2026-06-10
UTY6302 Alliance Airlines 2 2026-06-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 UTY6527 PER → PER Jul 14, 06:40 UTCJul 14, 10:00 UTC3h 20m
2026-07-13 UTY4831 PER → PER Jul 13, 21:50 UTCJul 14, 05:35 UTC7h 45m
2026-07-13 VOZ9203 PER → PER Jul 13, 01:20 UTCJul 13, 08:15 UTC6h 55m
2026-07-09 UTY6509 PER → PER Jul 9, 22:10 UTCJul 10, 00:55 UTC2h 45m
2026-07-09 UTY878 PER → PER Jul 9, 06:50 UTCJul 9, 12:00 UTC5h 10m
2026-07-08 UTY4832 PER → PER Jul 8, 21:35 UTCJul 9, 04:55 UTC7h 20m
2026-07-08 UTY737 PER → PER Jul 8, 06:55 UTCJul 8, 11:25 UTC4h 30m
2026-07-07 UTY733 PER → PER Jul 7, 23:10 UTCJul 8, 03:35 UTC4h 25m
2026-07-06 VOZ9204 PER → PER Jul 6, 02:00 UTCJul 6, 09:00 UTC7h 0m
2026-06-29 UTY4832 PER → PER Jun 29, 22:00 UTCJun 30, 06:05 UTC8h 6m
2026-06-29 UTY6521 PER → PER Jun 29, 02:39 UTCJun 29, 05:54 UTC3h 15m
2026-06-28 UTY6520 PER → PER Jun 28, 22:10 UTCJun 29, 00:29 UTC2h 20m
2026-06-25 UTY4832 PER → PER Jun 25, 21:44 UTCJun 26, 04:39 UTC6h 55m
2026-06-25 UTY6301 KGI → PER Jun 25, 09:14 UTCJun 25, 10:25 UTC1h 10m
2026-06-25 UTY6300 PER → KGI Jun 25, 07:34 UTCJun 25, 08:24 UTC50m
2026-06-25 UTY6307 KGI → PER Jun 25, 02:30 UTCJun 25, 03:40 UTC1h 10m
2026-06-25 UTY6306 PER → KGI Jun 25, 00:44 UTCJun 25, 01:35 UTC50m
2026-06-24 UTY737 PER → PER Jun 24, 06:55 UTCJun 24, 11:45 UTC4h 50m
2026-06-23 UTY804 PER → PER Jun 23, 08:30 UTCJun 23, 11:29 UTC3h 0m
2026-06-19 UTY6060 PER → PER Jun 19, 22:19 UTCJun 20, 09:09 UTC10h 50m
2026-06-19 UTY5209 PER → PER Jun 19, 07:25 UTCJun 19, 10:14 UTC2h 50m
2026-06-18 UTY4831 PER → PER Jun 18, 21:45 UTCJun 19, 05:14 UTC7h 29m
2026-06-18 UTY4120 PER → PER Jun 18, 06:10 UTCJun 18, 08:55 UTC2h 45m
2026-06-17 UTY4831 PER → PER Jun 17, 21:55 UTCJun 18, 04:55 UTC7h 0m
2026-06-17 UTY6081 BQB → PER Jun 17, 08:45 UTCJun 17, 09:15 UTC30m
2026-06-17 UTY6080 BQB → BQB Jun 17, 01:30 UTCJun 17, 08:00 UTC6h 30m
2026-06-17 UTY6080 PER → BQB Jun 17, 00:20 UTCJun 17, 00:50 UTC30m
2026-06-15 UTY4831 PER → AYQ Jun 15, 21:55 UTCJun 16, 05:00 UTC7h 5m
2026-06-15 VOZ9203 PER → KNX Jun 15, 01:15 UTCJun 15, 08:25 UTC7h 10m
2026-06-12 UTY4832 AYQ → PER Jun 12, 03:55 UTCJun 12, 04:30 UTC35m
2026-06-11 UTY4831 PER → AYQ Jun 11, 21:45 UTCJun 11, 22:20 UTC35m
2026-06-11 UTY6300 PER → KGI Jun 11, 07:45 UTCJun 11, 11:15 UTC3h 30m
2026-06-10 UTY4831 PER → AYQ Jun 10, 21:45 UTCJun 11, 05:30 UTC7h 45m
2026-06-10 UTY6303 KGI → PER Jun 10, 11:25 UTCJun 10, 12:40 UTC1h 15m
2026-06-10 UTY6302 PER → KGI Jun 10, 09:15 UTCJun 10, 10:00 UTC45m
2026-06-10 UTY7871 PER → PER Jun 10, 02:20 UTCJun 10, 07:35 UTC5h 15m
2026-06-09 UTY6301 KGI → PER Jun 9, 23:30 UTCJun 10, 00:30 UTC1h 0m
2026-06-09 UTY6300 PER → KGI Jun 9, 21:00 UTCJun 9, 21:50 UTC50m
2026-06-09 UTY735 PER → PER Jun 9, 06:20 UTCJun 9, 10:50 UTC4h 30m
2026-06-08 UTY802 PER → LEI Jun 8, 22:35 UTCJun 9, 01:45 UTC3h 10m
2026-06-07 UTY873 PER → PER Jun 7, 21:55 UTCJun 8, 04:35 UTC6h 40m
2026-06-06 UTY956 PER → LNO Jun 6, 00:05 UTCJun 6, 09:04 UTC9h 0m
2026-06-04 UTY5207 PER → PER Jun 4, 07:15 UTCJun 4, 11:50 UTC4h 35m
2026-06-03 UTY4831 PER → AYQ Jun 3, 21:40 UTCJun 4, 05:10 UTC7h 30m
2026-06-02 UTY953 LNO → PER Jun 2, 07:40 UTCJun 2, 11:00 UTC3h 20m
2026-06-01 UTY4831 PER → AYQ Jun 1, 21:45 UTCJun 2, 05:20 UTC7h 35m
2026-06-01 VOZ9203 PER → KNX Jun 1, 01:05 UTCJun 1, 08:10 UTC7h 5m
2026-05-27 UTY5204 PER → PER May 27, 22:45 UTCMay 28, 01:35 UTC2h 50m
2026-05-27 UTY753 KGI → PER May 27, 07:50 UTCMay 27, 09:00 UTC1h 10m
2026-05-27 UTY752 ISA → TSV May 27, 05:59 UTCMay 27, 06:44 UTC45m

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

Mode-S 7C6781 frequently asked

What is Mode-S code 7C6781?
7C6781 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-UQB.
Where is Mode-S 7C6781 registered?
Mode-S code 7C6781 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C6781 broadcasting right now?
Mode-S 7C6781 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C6781, octal 37063601, decimal 8,152,961.
What flights does 7C6781 operate?
Mode-S 7C6781 has broadcast 20 distinct callsigns, including UTY4831, UTY4832, VOZ9204, VOZ9203, UTY751.