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
No current signal · last broadcast 2h ago
Flights observed
288
Distinct callsigns
20
Country
AU
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 7C68AE.

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
QLK1943 - 11 2026-06-26
QLK1944 - 10 2026-06-27
QLK1888 - 10 2026-07-11
QLK1885 - 9 2026-07-11
QLK1868 - 9 2026-06-29
QLK1871 - 7 2026-06-29
QLK1950 - 6 2026-07-02
QLK1949 - 6 2026-07-02
QLK1946 - 6 2026-07-01
QLK1945 - 6 2026-07-01
QLK1809 - 6 2026-07-19
QLK1803 - 6 2026-07-16
QLK1982 - 5 2026-07-16
QLK1981 - 5 2026-07-15
QLK1802 - 5 2026-07-18
QLK1999 - 4 2026-06-30
QLK1998 - 4 2026-06-30
QLK1993 - 4 2026-05-27
QLK1988 - 4 2026-07-01
QLK1954 - 4 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-19 QLK1809 - Jul 19, 08:55 UTCJul 19, 09:25 UTC30m
2026-07-19 QLK1809 - Jul 19, 07:05 UTCJul 19, 08:00 UTC55m
2026-07-19 QLK1806 ADL → BNE Jul 19, 03:50 UTCJul 19, 06:10 UTC2h 20m
2026-07-19 QLK1805 BNE → ADL Jul 19, 00:25 UTCJul 19, 02:45 UTC2h 20m
2026-07-18 QLK1802 ADL → BNE Jul 18, 00:15 UTCJul 18, 02:29 UTC2h 15m
2026-07-17 QLK1801 BNE → ADL Jul 17, 20:40 UTCJul 17, 22:55 UTC2h 15m
2026-07-17 QLK1810 ADL → BNE Jul 17, 10:40 UTCJul 17, 13:00 UTC2h 20m
2026-07-17 QLK1809 - Jul 17, 07:14 UTCJul 17, 09:30 UTC2h 15m
2026-07-17 QLK1802 ADL → BNE Jul 17, 02:39 UTCJul 17, 04:49 UTC2h 10m
2026-07-16 QLK1803 BNE → ADL Jul 16, 23:10 UTCJul 17, 01:29 UTC2h 20m
2026-07-16 QLK1982 - Jul 16, 00:10 UTCJul 16, 01:10 UTC1h 0m
2026-07-15 QLK1981 - Jul 15, 22:10 UTCJul 15, 23:20 UTC1h 10m
2026-07-14 QLK1862 BNE → BNE Jul 14, 03:10 UTCJul 14, 07:30 UTC4h 20m
2026-07-14 QLK1982 - Jul 14, 00:10 UTCJul 14, 01:15 UTC1h 5m
2026-07-13 QLK1981 - Jul 13, 22:10 UTCJul 13, 23:10 UTC1h 0m
2026-07-13 QLK1831 - Jul 13, 09:40 UTCJul 13, 10:50 UTC1h 10m
2026-07-13 QLK1830 - Jul 13, 07:35 UTCJul 13, 09:00 UTC1h 25m
2026-07-11 QLK1888 BNE → BNE Jul 11, 07:10 UTCJul 11, 22:05 UTC14h 55m
2026-07-11 QLK1885 - Jul 11, 04:40 UTCJul 11, 05:55 UTC1h 15m
2026-07-10 QLK1888 BNE → BNE Jul 10, 08:00 UTCJul 11, 05:55 UTC21h 55m
2026-07-10 QLK1885 - Jul 10, 05:25 UTCJul 10, 06:35 UTC1h 10m
2026-07-09 QLK1885 - Jul 9, 07:35 UTCJul 10, 06:35 UTC23h 0m
2026-07-09 QLK1888 - Jul 9, 07:10 UTCJul 10, 05:30 UTC22h 20m
2026-07-09 QLK1825 - Jul 9, 03:40 UTCJul 9, 04:45 UTC1h 5m
2026-07-09 QLK1824 - Jul 9, 01:20 UTCJul 9, 02:45 UTC1h 25m
2026-07-08 QLK1840 BNE → BNE Jul 8, 20:55 UTCJul 8, 23:50 UTC2h 55m
2026-07-08 QLK1930 BNE → BNE Jul 8, 05:05 UTCJul 8, 07:55 UTC2h 50m
2026-07-08 QLK1802 ADL → BNE Jul 8, 00:15 UTCJul 8, 02:15 UTC2h 0m
2026-07-07 QLK1801 BNE → ADL Jul 7, 20:40 UTCJul 7, 23:20 UTC2h 40m
2026-07-07 QLK1933 BNE → BNE Jul 7, 07:35 UTCJul 7, 10:45 UTC3h 10m
2026-07-07 QLK1885 - Jul 7, 04:50 UTCJul 7, 06:05 UTC1h 15m
2026-07-05 QLK1888 - Jul 5, 07:10 UTCJul 5, 08:50 UTC1h 40m
2026-07-05 QLK1885 - Jul 5, 04:40 UTCJul 5, 05:50 UTC1h 10m
2026-07-04 QLK1885 - Jul 4, 05:35 UTCJul 5, 05:30 UTC23h 55m
2026-07-04 QLK1990 - Jul 4, 04:35 UTCJul 4, 06:05 UTC1h 30m
2026-07-03 QLK1882 BNE → BNE Jul 3, 22:20 UTCJul 4, 03:15 UTC4h 55m
2026-07-03 QLK1954 - Jul 3, 08:10 UTCJul 3, 09:35 UTC1h 25m
2026-07-03 QLK1953 - Jul 3, 05:35 UTCJul 3, 07:10 UTC1h 35m
2026-07-03 QLK1825 - Jul 3, 03:20 UTCJul 3, 04:30 UTC1h 10m
2026-07-03 QLK1824 - Jul 3, 01:00 UTCJul 3, 02:20 UTC1h 20m
2026-07-02 QLK1848 BNE → BNE Jul 2, 07:15 UTCJul 2, 21:40 UTC14h 25m
2026-07-02 QLK1950 - Jul 2, 04:10 UTCJul 2, 05:30 UTC1h 20m
2026-07-02 QLK1949 - Jul 2, 01:40 UTCJul 2, 03:15 UTC1h 35m
2026-07-01 QLK1946 - Jul 1, 23:05 UTCJul 2, 00:30 UTC1h 25m
2026-07-01 QLK1945 - Jul 1, 20:35 UTCJul 1, 22:10 UTC1h 35m
2026-07-01 QLK1988 - Jul 1, 01:05 UTCJul 1, 02:05 UTC1h 0m
2026-06-30 QLK1999 - Jun 30, 09:15 UTCJun 30, 10:35 UTC1h 20m
2026-06-30 QLK1998 - Jun 30, 06:35 UTCJun 30, 07:55 UTC1h 20m
2026-06-30 QLK1908 - Jun 30, 03:40 UTCJun 30, 05:30 UTC1h 50m
2026-06-29 QLK1803 BNE → ADL Jun 29, 23:14 UTCJun 30, 01:45 UTC2h 31m

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?
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 7C68AE, octal 37064256, decimal 8,153,262.
What flights does 7C68AE operate?
Mode-S 7C68AE has broadcast 20 distinct callsigns, including QLK1943, QLK1944, QLK1888, QLK1885, QLK1868.