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sensors Mode-S transponder

7C68A4

ICAO 24-bit transponder address · allocated to Australia

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

Hex
7C68A4
Octal
37064244
Decimal
8,153,252
Country
AU
Tail
VH-UYE
Type
E190
No current signal · last broadcast 1d ago
Flights observed
311
Distinct callsigns
20
Country
AU
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 7C68A4.

Country allocation

The ICAO 24-bit address 7C68A4 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
QLK1828 - 9 2026-06-16
QLK1972 - 8 2026-06-16
QLK1971 - 8 2026-06-15
QLK1954 - 8 2026-05-28
QLK1988 - 7 2026-07-06
QLK1953 - 7 2026-05-29
QLK1888 - 7 2026-06-17
QLK1826 - 7 2026-07-02
QLK1992 - 6 2026-06-30
QLK1885 - 6 2026-06-18
QLK1813 - 6 2026-06-30
QLK1998 - 5 2026-07-06
QLK1987 - 5 2026-06-10
QLK1890 - 5 2026-06-16
QLK1831 - 5 2026-06-22
QLK1830 - 5 2026-06-22
QLK1825 - 5 2026-06-12
QLK1821 - 5 2026-06-11
QLK1805 - 5 2026-06-23
QLK1802 - 5 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 UTY2612 - Jul 13, 08:20 UTCJul 13, 08:30 UTC10m
2026-07-13 UTY2612 - Jul 13, 04:20 UTCJul 13, 04:30 UTC10m
2026-07-12 UTY2612 - Jul 12, 23:15 UTCJul 12, 23:45 UTC30m
2026-07-08 QLK1872 BNE → BNE Jul 8, 22:55 UTCJul 9, 01:55 UTC3h 0m
2026-07-08 QLK1848 BNE → BNE Jul 8, 07:30 UTCJul 8, 21:40 UTC14h 10m
2026-07-08 QLK1899 - Jul 8, 05:00 UTCJul 8, 06:15 UTC1h 15m
2026-07-08 QLK1898 BNE → HAP Jul 8, 02:25 UTCJul 8, 03:50 UTC1h 25m
2026-07-08 QLK1982 - Jul 8, 00:15 UTCJul 8, 01:15 UTC1h 0m
2026-07-07 QLK1981 - Jul 7, 22:20 UTCJul 7, 23:25 UTC1h 5m
2026-07-07 QLK1862 BNE → BNE Jul 7, 03:00 UTCJul 7, 07:20 UTC4h 20m
2026-07-07 QLK1982 - Jul 7, 00:15 UTCJul 7, 01:20 UTC1h 5m
2026-07-06 QLK1981 - Jul 6, 22:10 UTCJul 6, 23:15 UTC1h 5m
2026-07-06 QLK1988 - Jul 6, 20:10 UTCJul 6, 21:10 UTC1h 0m
2026-07-06 QLK1999 - Jul 6, 09:15 UTCJul 6, 10:35 UTC1h 20m
2026-07-06 QLK1998 - Jul 6, 06:50 UTCJul 6, 08:10 UTC1h 20m
2026-07-06 QLK1908 - Jul 6, 04:10 UTCJul 6, 06:00 UTC1h 50m
2026-07-05 QLK1905 - Jul 5, 09:15 UTCJul 5, 09:50 UTC35m
2026-07-03 QLK1904 - Jul 3, 22:40 UTCJul 3, 23:15 UTC35m
2026-07-03 QLK1811 BNE → ADL Jul 3, 09:05 UTCJul 3, 11:40 UTC2h 35m
2026-07-03 QLK1952 - Jul 3, 06:30 UTCJul 3, 07:55 UTC1h 25m
2026-07-03 QLK1951 - Jul 3, 03:55 UTCJul 3, 05:25 UTC1h 30m
2026-07-03 QLK1802 - Jul 3, 00:55 UTCJul 3, 02:50 UTC1h 55m
2026-07-02 QLK1801 BNE → ADL Jul 2, 21:10 UTCJul 2, 23:55 UTC2h 45m
2026-07-02 QLK1986 - Jul 2, 09:35 UTCJul 2, 10:35 UTC1h 0m
2026-07-02 QLK1985 - Jul 2, 07:35 UTCJul 2, 08:40 UTC1h 5m
2026-07-02 QLK1827 MKY → BNE Jul 2, 05:10 UTCJul 2, 06:25 UTC1h 15m
2026-07-02 QLK1826 - Jul 2, 03:10 UTCJul 2, 04:30 UTC1h 20m
2026-07-02 QLK1823 - Jul 2, 00:50 UTCJul 2, 02:05 UTC1h 15m
2026-07-01 QLK1822 - Jul 1, 22:40 UTCJul 2, 00:05 UTC1h 25m
2026-07-01 QLK1988 - Jul 1, 20:05 UTCJul 1, 21:05 UTC1h 0m
2026-07-01 QLK1999 - Jul 1, 09:45 UTCJul 1, 11:05 UTC1h 20m
2026-07-01 QLK1998 - Jul 1, 06:30 UTCJul 1, 08:05 UTC1h 35m
2026-07-01 QLK1908 - Jul 1, 03:45 UTCJul 1, 05:30 UTC1h 45m
2026-07-01 QLK1993 - Jul 1, 00:05 UTCJul 1, 00:50 UTC45m
2026-06-30 QLK1993 - Jun 30, 22:30 UTCJun 30, 23:10 UTC40m
2026-06-30 QLK1814 - Jun 30, 20:40 UTCJun 30, 21:10 UTC30m
2026-06-30 QLK1813 - Jun 30, 07:00 UTCJun 30, 07:35 UTC35m
2026-06-30 QLK1992 ADL → SYD Jun 30, 04:10 UTCJun 30, 05:50 UTC1h 40m
2026-06-29 QLK1816 ADL → ADL Jun 29, 22:35 UTCJun 30, 03:05 UTC4h 30m
2026-06-29 QLK1856 ADL → ADL Jun 29, 04:55 UTCJun 29, 09:25 UTC4h 30m
2026-06-29 QLK1909 - Jun 29, 01:29 UTCJun 29, 03:39 UTC2h 10m
2026-06-28 QLK1997 - Jun 28, 23:25 UTCJun 29, 00:34 UTC1h 10m
2026-06-28 QLK1996 - Jun 28, 20:34 UTCJun 28, 21:59 UTC1h 25m
2026-06-28 QLK1999 - Jun 28, 08:25 UTCJun 28, 09:34 UTC1h 10m
2026-06-28 QLK1998 - Jun 28, 06:30 UTCJun 28, 07:09 UTC40m
2026-06-28 QLK1998 - Jun 28, 05:45 UTCJun 28, 06:24 UTC40m
2026-06-28 QLK1997 - Jun 28, 03:25 UTCJun 28, 04:40 UTC1h 15m
2026-06-28 QLK1996 - Jun 28, 00:59 UTCJun 28, 02:20 UTC1h 20m
2026-06-27 QLK1983 - Jun 27, 02:39 UTCJun 27, 03:40 UTC1h 0m
2026-06-26 QLK1868 BNE → BNE Jun 26, 06:15 UTCJun 26, 10:30 UTC4h 15m

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

Mode-S 7C68A4 frequently asked

What is Mode-S code 7C68A4?
7C68A4 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-UYE.
Where is Mode-S 7C68A4 registered?
Mode-S code 7C68A4 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C68A4 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C68A4, octal 37064244, decimal 8,153,252.
What flights does 7C68A4 operate?
Mode-S 7C68A4 has broadcast 20 distinct callsigns, including QLK1828, QLK1972, QLK1971, QLK1954, QLK1988.