Apparatus

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sensors Mode-S transponder

7C68B9

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-UYZ · EMBRAER ERJ-190-100 · operated by ALLIANCE AIRLINES PTY LIMITED

Hex
7C68B9
Octal
37064271
Decimal
8,153,273
Country
AU
Tail
VH-UYZ
Type
E190
No current signal · last broadcast 8h ago
Flights observed
340
Distinct callsigns
20
Country
AU
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S 7C68B9.

Country allocation

The ICAO 24-bit address 7C68B9 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
QLK1971 - 9 2026-07-11
QLK1947 - 9 2026-06-26
QLK1944 - 9 2026-07-06
QLK1826 - 9 2026-07-11
QLK1972 - 8 2026-06-12
QLK1954 - 8 2026-06-25
QLK1953 - 8 2026-06-25
QLK1948 - 8 2026-06-27
QLK1830 - 7 2026-07-10
QLK1982 - 6 2026-07-10
QLK1981 - 6 2026-07-09
QLK1943 - 6 2026-07-06
QLK1871 - 6 2026-06-03
QLK1868 - 6 2026-07-01
QLK1833 - 6 2026-07-10
QLK1824 - 6 2026-06-19
QLK1823 - 6 2026-07-14
QLK1822 - 6 2026-07-13
QLK1984 - 5 2026-07-10
QLK1983 - 5 2026-07-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 QLK1823 - Jul 14, 00:40 UTCJul 14, 01:45 UTC1h 5m
2026-07-13 QLK1822 - Jul 13, 22:25 UTCJul 13, 23:45 UTC1h 20m
2026-07-13 QLK1988 - Jul 13, 20:10 UTCJul 13, 21:15 UTC1h 5m
2026-07-13 QLK1999 - Jul 13, 09:20 UTCJul 13, 10:35 UTC1h 15m
2026-07-13 QLK1998 - Jul 13, 06:25 UTCJul 13, 07:50 UTC1h 25m
2026-07-13 QLK1908 - Jul 13, 03:50 UTCJul 13, 05:31 UTC1h 40m
2026-07-12 QLK1803 BNE → ADL Jul 12, 23:15 UTCJul 13, 01:45 UTC2h 30m
2026-07-12 QLK1870 BNE → BNE Jul 12, 09:25 UTCJul 12, 21:30 UTC12h 5m
2026-07-12 QLK1923 - Jul 12, 07:31 UTCJul 12, 08:01 UTC30m
2026-07-12 QLK1922 - Jul 12, 05:40 UTCJul 12, 06:15 UTC35m
2026-07-11 QLK1971 BNE → BNE Jul 11, 23:50 UTCJul 12, 04:05 UTC4h 15m
2026-07-11 QLK1827 - Jul 11, 05:35 UTCJul 11, 06:45 UTC1h 10m
2026-07-11 QLK1826 - Jul 11, 03:25 UTCJul 11, 04:45 UTC1h 20m
2026-07-11 QLK1823 - Jul 11, 01:05 UTCJul 11, 02:15 UTC1h 10m
2026-07-10 QLK1822 - Jul 10, 22:45 UTCJul 11, 00:05 UTC1h 20m
2026-07-10 QLK1833 - Jul 10, 20:15 UTCJul 10, 21:20 UTC1h 5m
2026-07-10 QLK1830 - Jul 10, 08:55 UTCJul 10, 09:10 UTC15m
2026-07-10 QLK1830 - Jul 10, 07:50 UTCJul 10, 08:25 UTC35m
2026-07-10 QLK1984 NTL → BNE Jul 10, 04:55 UTCJul 10, 06:05 UTC1h 10m
2026-07-10 QLK1983 - Jul 10, 03:00 UTCJul 10, 04:00 UTC1h 0m
2026-07-10 QLK1982 - Jul 10, 00:15 UTCJul 10, 01:20 UTC1h 5m
2026-07-09 QLK1981 - Jul 9, 22:15 UTCJul 9, 23:15 UTC1h 0m
2026-07-09 QLK1956 - Jul 9, 09:00 UTCJul 9, 10:30 UTC1h 30m
2026-07-09 QLK1955 - Jul 9, 06:35 UTCJul 9, 08:05 UTC1h 30m
2026-07-09 QLK1950 - Jul 9, 04:05 UTCJul 9, 05:35 UTC1h 30m
2026-07-09 QLK1949 - Jul 9, 01:40 UTCJul 9, 03:05 UTC1h 25m
2026-07-08 QLK1888 BNE → BNE Jul 8, 07:20 UTCJul 8, 21:50 UTC14h 30m
2026-07-08 QLK1806 ADL → BNE Jul 8, 04:05 UTCJul 8, 06:10 UTC2h 5m
2026-07-08 QLK1805 BNE → ADL Jul 8, 00:30 UTCJul 8, 03:15 UTC2h 45m
2026-07-07 QLK1988 - Jul 7, 20:15 UTCJul 7, 21:15 UTC1h 0m
2026-07-07 QLK1908 - Jul 7, 03:50 UTCJul 7, 05:35 UTC1h 45m
2026-07-06 QLK1803 BNE → ADL Jul 6, 23:10 UTCJul 7, 01:45 UTC2h 35m
2026-07-06 QLK1944 SYD → BNE Jul 6, 08:50 UTCJul 6, 21:40 UTC12h 50m
2026-07-06 QLK1943 MEL → SYD Jul 6, 01:40 UTCJul 6, 07:50 UTC6h 10m
2026-07-05 QLK1944 - Jul 5, 08:30 UTCJul 5, 23:55 UTC15h 25m
2026-07-05 QLK1943 MEL → SYD Jul 5, 01:25 UTCJul 5, 07:20 UTC5h 55m
2026-07-04 QLK1941 - Jul 4, 23:15 UTCJul 4, 23:50 UTC35m
2026-07-04 QLK1941 - Jul 4, 03:10 UTCJul 4, 23:50 UTC20h 40m
2026-07-04 QLK1944 SYD → MEL Jul 4, 01:10 UTCJul 4, 23:50 UTC22h 40m
2026-07-03 QLK1944 SYD → SYD Jul 3, 08:50 UTCJul 3, 23:35 UTC14h 45m
2026-07-03 QLK1943 - Jul 3, 05:45 UTCJul 3, 07:45 UTC2h 0m
2026-07-03 QLK1942 - Jul 3, 01:40 UTCJul 3, 02:10 UTC30m
2026-07-02 QLK1944 SYD → MEL Jul 2, 08:45 UTCJul 3, 00:00 UTC15h 15m
2026-07-02 QLK1943 - Jul 2, 05:30 UTCJul 2, 07:20 UTC1h 50m
2026-07-02 QLK1942 - Jul 2, 01:20 UTCJul 2, 01:55 UTC35m
2026-07-01 QLK1868 BNE → MEL Jul 1, 06:15 UTCJul 2, 00:00 UTC17h 45m
2026-07-01 QLK1804 ADL → BNE Jul 1, 02:45 UTCJul 1, 04:40 UTC1h 55m
2026-06-30 QLK1795 - Jun 30, 23:20 UTCJul 1, 01:15 UTC1h 55m
2026-06-30 QLK1794 - Jun 30, 21:00 UTCJun 30, 22:05 UTC1h 5m
2026-06-30 QLK1909 - Jun 30, 01:25 UTCJun 30, 03:30 UTC2h 6m

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

Mode-S 7C68B9 frequently asked

What is Mode-S code 7C68B9?
7C68B9 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-UYZ.
Where is Mode-S 7C68B9 registered?
Mode-S code 7C68B9 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C68B9 broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C68B9, octal 37064271, decimal 8,153,273.
What flights does 7C68B9 operate?
Mode-S 7C68B9 has broadcast 20 distinct callsigns, including QLK1971, QLK1947, QLK1944, QLK1826, QLK1972.