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sensors Mode-S transponder

7C68D4

ICAO 24-bit transponder address · allocated to Australia

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

Hex
7C68D4
Octal
37064324
Decimal
8,153,300
Country
AU
Tail
VH-UZQ
Type
E190
No current signal · last broadcast 2h ago
Flights observed
233
Distinct callsigns
20
Country
AU
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 7C68D4.

Country allocation

The ICAO 24-bit address 7C68D4 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
QLK1906 - 16 2026-07-10
QLK1905 - 15 2026-07-10
QLK1907 - 12 2026-07-09
QLK1904 - 12 2026-07-07
QLK351 - 8 2026-06-23
QLK1802 - 6 2026-07-05
QLK354 - 4 2026-04-16
QLK353 - 4 2026-04-16
QLK1971 - 4 2026-06-29
QLK1908 - 4 2026-06-07
QLK1844 - 4 2026-07-13
QLK1805 - 4 2026-07-06
QLK1804 - 4 2026-07-03
QLK1801 - 4 2026-07-03
QLK1796 - 4 2026-07-12
QLK1984 - 3 2026-07-14
QLK1983 - 3 2026-07-14
QLK1959 - 3 2026-06-11
QLK1956 - 3 2026-06-25
QLK1955 - 3 2026-06-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 QLK1932 BNE → BNE Jul 14, 07:40 UTCJul 14, 10:45 UTC3h 5m
2026-07-14 QLK1984 - Jul 14, 05:25 UTCJul 14, 06:25 UTC1h 0m
2026-07-14 QLK1983 - Jul 14, 03:20 UTCJul 14, 04:25 UTC1h 5m
2026-07-13 QLK1890 BNE → BNE Jul 13, 10:45 UTCJul 13, 22:10 UTC11h 25m
2026-07-13 QLK1930 BNE → BNE Jul 13, 05:01 UTCJul 13, 08:05 UTC3h 5m
2026-07-13 QLK1844 BNE → BNE Jul 13, 00:55 UTCJul 13, 03:40 UTC2h 45m
2026-07-12 QLK1800 ADL → BNE Jul 12, 21:30 UTCJul 12, 23:45 UTC2h 15m
2026-07-12 QLK1799 - Jul 12, 09:20 UTCJul 12, 11:01 UTC1h 40m
2026-07-12 QLK1798 - Jul 12, 06:55 UTCJul 12, 08:10 UTC1h 15m
2026-07-12 QLK1797 - Jul 12, 04:10 UTCJul 12, 05:55 UTC1h 45m
2026-07-12 QLK1796 - Jul 12, 01:55 UTCJul 12, 03:05 UTC1h 10m
2026-07-11 QLK1795 - Jul 11, 23:10 UTCJul 12, 00:50 UTC1h 40m
2026-07-11 QLK1796 - Jul 11, 02:10 UTCJul 11, 03:25 UTC1h 15m
2026-07-10 QLK1905 - Jul 10, 09:25 UTCJul 10, 09:55 UTC30m
2026-07-10 QLK1906 - Jul 10, 04:55 UTCJul 10, 05:05 UTC10m
2026-07-10 QLK1906 - Jul 10, 01:40 UTCJul 10, 02:15 UTC35m
2026-07-09 QLK1907 - Jul 9, 23:50 UTCJul 10, 00:20 UTC30m
2026-07-07 QLK1904 - Jul 7, 02:30 UTCJul 7, 02:40 UTC10m
2026-07-06 QLK1904 - Jul 6, 22:40 UTCJul 6, 23:10 UTC30m
2026-07-06 QLK1799 - Jul 6, 09:20 UTCJul 6, 10:45 UTC1h 25m
2026-07-06 QLK1798 - Jul 6, 07:00 UTCJul 6, 08:25 UTC1h 25m
2026-07-06 QLK1805 BNE → ADL Jul 6, 00:35 UTCJul 6, 03:00 UTC2h 25m
2026-07-05 QLK1926 BNE → BNE Jul 5, 19:40 UTCJul 5, 22:45 UTC3h 5m
2026-07-05 QLK1808 ADL → BNE Jul 5, 08:25 UTCJul 5, 10:35 UTC2h 10m
2026-07-05 QLK1807 BNE → ADL Jul 5, 04:40 UTCJul 5, 07:00 UTC2h 20m
2026-07-05 QLK1802 ADL → BNE Jul 5, 00:10 UTCJul 5, 02:20 UTC2h 10m
2026-07-04 QLK1809 BNE → ADL Jul 4, 07:10 UTCJul 4, 09:35 UTC2h 25m
2026-07-04 QLK1802 ADL → BNE Jul 4, 00:15 UTCJul 4, 02:25 UTC2h 10m
2026-07-03 QLK1801 BNE → ADL Jul 3, 20:25 UTCJul 3, 22:55 UTC2h 30m
2026-07-03 QLK1865 - Jul 3, 09:15 UTCJul 3, 10:25 UTC1h 10m
2026-07-03 QLK1868 - Jul 3, 06:25 UTCJul 3, 07:50 UTC1h 25m
2026-07-03 QLK1804 - Jul 3, 03:00 UTCJul 3, 04:55 UTC1h 55m
2026-07-02 QLK1803 BNE → ADL Jul 2, 23:05 UTCJul 3, 01:55 UTC2h 50m
2026-07-02 QLK1833 - Jul 2, 20:15 UTCJul 2, 21:25 UTC1h 10m
2026-07-02 QLK1832 - Jul 2, 10:00 UTCJul 2, 11:20 UTC1h 20m
2026-07-02 QLK1829 MKY → BNE Jul 2, 07:30 UTCJul 2, 08:45 UTC1h 15m
2026-07-02 QLK1828 - Jul 2, 05:30 UTCJul 2, 06:51 UTC1h 21m
2026-07-02 QLK1802 ADL → BNE Jul 2, 00:35 UTCJul 2, 02:40 UTC2h 5m
2026-07-01 QLK1801 BNE → ADL Jul 1, 20:45 UTCJul 1, 23:35 UTC2h 50m
2026-07-01 QLK1930 BNE → BNE Jul 1, 05:00 UTCJul 1, 08:10 UTC3h 10m
2026-07-01 QLK1844 BNE → BNE Jul 1, 00:45 UTCJul 1, 03:35 UTC2h 50m
2026-06-30 QLK1800 ADL → BNE Jun 30, 21:15 UTCJun 30, 23:15 UTC2h 0m
2026-06-30 QLK1811 BNE → ADL Jun 30, 09:00 UTCJun 30, 11:40 UTC2h 40m
2026-06-30 QLK1972 ABX → BNE Jun 30, 02:40 UTCJun 30, 04:25 UTC1h 45m
2026-06-29 QLK1971 BNE → ABX Jun 29, 23:49 UTCJun 30, 01:30 UTC1h 41m
2026-06-29 QLK1920 BNE → BNE Jun 29, 20:09 UTCJun 29, 22:35 UTC2h 25m
2026-06-29 QLK1986 - Jun 29, 09:34 UTCJun 29, 10:44 UTC1h 10m
2026-06-29 QLK1985 - Jun 29, 07:55 UTCJun 29, 08:50 UTC55m
2026-06-28 QLK2680 BNE → BNE Jun 28, 21:59 UTCJun 29, 05:04 UTC7h 5m
2026-06-28 QLK1989 BNE → BNE Jun 28, 04:44 UTCJun 28, 09:39 UTC4h 55m

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

Mode-S 7C68D4 frequently asked

What is Mode-S code 7C68D4?
7C68D4 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-UZQ.
Where is Mode-S 7C68D4 registered?
Mode-S code 7C68D4 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C68D4 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C68D4, octal 37064324, decimal 8,153,300.
What flights does 7C68D4 operate?
Mode-S 7C68D4 has broadcast 20 distinct callsigns, including QLK1906, QLK1905, QLK1907, QLK1904, QLK351.