Apparatus

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sensors Mode-S transponder

7C68AE

ICAO 24-bit transponder address · allocated to Australia

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

Hex
7C68AE
Octal
37064256
Decimal
8,153,262
Country
AU
Tail
VH-UYO
Type
E190
Broadcasting now · callsign QLK1943 · 3,150 ft
Flights observed
153
Distinct callsigns
20
Country
AU
Last broadcast
1h ago

Current position

7C68AE is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 7C68AE 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
QLK1993 - 4 2026-05-27
QLK1950 - 4 2026-06-01
QLK1949 - 4 2026-06-01
QLK1946 - 4 2026-05-31
QLK1945 - 4 2026-05-31
QLK1868 - 4 2026-06-02
QLK1795 - 4 2026-05-17
QLK1794 - 4 2026-05-17
QLK1992 - 3 2026-05-19
QLK1956 - 3 2026-05-08
QLK1955 - 3 2026-05-27
QLK1948 - 3 2026-04-29
QLK1947 - 3 2026-04-28
QLK1890 - 3 2026-05-15
QLK1814 - 3 2026-05-27
QLK1813 - 3 2026-05-19
QLK1808 - 3 2026-05-15
QLK1805 - 3 2026-05-11
QLK1798 - 3 2026-05-21
QLK1999 - 2 2026-05-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-04 QLK1942 - Jun 4, 01:10 UTCJun 4, 05:30 UTC4h 20m
2026-06-03 QLK1941 - Jun 3, 23:30 UTCJun 4, 00:00 UTC30m
2026-06-03 QLK1944 - Jun 3, 08:40 UTCJun 3, 10:35 UTC1h 55m
2026-06-03 QLK1943 - Jun 3, 05:15 UTCJun 3, 07:10 UTC1h 55m
2026-06-02 QLK1868 - Jun 2, 06:10 UTCJun 2, 07:35 UTC1h 25m
2026-06-02 QLK1804 ADL → BNE Jun 2, 02:55 UTCJun 2, 04:50 UTC1h 55m
2026-06-01 QLK1803 BNE → ADL Jun 1, 23:10 UTCJun 2, 02:00 UTC2h 50m
2026-06-01 QLK1891 - Jun 1, 21:25 UTCJun 1, 22:00 UTC35m
2026-06-01 QLK1888 - Jun 1, 07:25 UTCJun 1, 21:00 UTC13h 35m
2026-06-01 QLK1950 - Jun 1, 04:10 UTCJun 1, 05:30 UTC1h 20m
2026-06-01 QLK1949 - Jun 1, 01:35 UTCJun 1, 03:10 UTC1h 35m
2026-05-31 QLK1946 - May 31, 22:50 UTCJun 1, 00:15 UTC1h 25m
2026-05-31 QLK1945 - May 31, 20:25 UTCMay 31, 22:00 UTC1h 35m
2026-05-30 QLK1887 BNE → BNE May 30, 23:10 UTCMay 31, 10:30 UTC11h 20m
2026-05-30 QLK6281 - May 30, 20:35 UTCMay 30, 21:55 UTC1h 20m
2026-05-30 QLK1944 - May 30, 00:55 UTCMay 30, 02:45 UTC1h 50m
2026-05-29 QLK1943 - May 29, 21:45 UTCMay 29, 23:40 UTC1h 55m
2026-05-29 QLK1868 - May 29, 06:10 UTCMay 29, 07:35 UTC1h 25m
2026-05-28 QLK1988 - May 28, 20:15 UTCMay 28, 21:15 UTC1h 0m
2026-05-28 QLK1987 - May 28, 10:05 UTCMay 28, 11:00 UTC55m
2026-05-28 QLK1829 - May 28, 08:05 UTCMay 28, 09:05 UTC1h 0m
2026-05-28 QLK1829 - May 28, 07:25 UTCMay 28, 07:40 UTC15m
2026-05-28 QLK1828 BNE → MKY May 28, 05:10 UTCMay 28, 06:35 UTC1h 25m
2026-05-28 QLK1810 - May 28, 01:10 UTCMay 28, 03:40 UTC2h 30m
2026-05-27 QLK1993 - May 27, 23:05 UTCMay 27, 23:55 UTC50m
2026-05-27 QLK1993 - May 27, 22:15 UTCMay 27, 23:00 UTC45m
2026-05-27 QLK1814 - May 27, 20:15 UTCMay 27, 20:55 UTC40m
2026-05-27 QLK1955 - May 27, 06:44 UTCMay 27, 08:00 UTC1h 15m
2026-05-27 QLK1950 - May 27, 03:54 UTCMay 27, 05:24 UTC1h 30m
2026-05-27 QLK1949 - May 27, 01:24 UTCMay 27, 02:39 UTC1h 15m
2026-05-26 QLK1800 ADL → BNE May 26, 21:09 UTCMay 26, 23:39 UTC2h 30m
2026-05-26 QLK1905 - May 26, 09:49 UTCMay 26, 10:25 UTC35m
2026-05-26 QLK1906 - May 26, 01:40 UTCMay 26, 02:10 UTC30m
2026-05-25 QLK1907 - May 25, 23:54 UTCMay 26, 00:24 UTC30m
2026-05-21 QLK1904 - May 21, 22:40 UTCMay 21, 23:20 UTC40m
2026-05-21 QLK1799 - May 21, 09:40 UTCMay 21, 11:05 UTC1h 25m
2026-05-21 QLK1798 - May 21, 08:15 UTCMay 21, 08:25 UTC10m
2026-05-21 QLK1798 - May 21, 07:00 UTCMay 21, 08:10 UTC1h 10m
2026-05-21 QLK1797 - May 21, 04:30 UTCMay 21, 05:55 UTC1h 25m
2026-05-21 QLK1796 - May 21, 01:55 UTCMay 21, 03:20 UTC1h 25m
2026-05-20 QLK1791 MEL → ADL May 20, 23:45 UTCMay 21, 00:45 UTC1h 0m
2026-05-20 QLK1790 - May 20, 21:35 UTCMay 20, 22:40 UTC1h 5m
2026-05-19 QLK1993 SYD → ADL May 19, 22:50 UTCMay 20, 00:40 UTC1h 50m
2026-05-19 QLK1814 - May 19, 20:45 UTCMay 19, 21:20 UTC35m
2026-05-19 QLK1813 - May 19, 06:40 UTCMay 19, 07:15 UTC35m
2026-05-19 QLK1992 - May 19, 04:00 UTCMay 19, 05:40 UTC1h 40m
2026-05-18 QLK1817 - May 18, 22:25 UTCMay 19, 03:05 UTC4h 40m
2026-05-18 QLK1809 BNE → ADL May 18, 07:20 UTCMay 18, 09:50 UTC2h 30m
2026-05-18 QLK1806 ADL → BNE May 18, 04:05 UTCMay 18, 06:10 UTC2h 5m
2026-05-17 QLK1795 - May 17, 23:50 UTCMay 18, 00:40 UTC50m

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

Mode-S 7C68AE frequently asked

What is Mode-S code 7C68AE?
7C68AE is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-UYO.
Where is Mode-S 7C68AE registered?
Mode-S code 7C68AE is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C68AE broadcasting right now?
Yes. Mode-S 7C68AE is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C68AE, octal 37064256, decimal 8,153,262.
What flights does 7C68AE operate?
Mode-S 7C68AE has broadcast 20 distinct callsigns, including QLK1993, QLK1950, QLK1949, QLK1946, QLK1945.