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sensors Mode-S transponder

7C68A2

ICAO 24-bit transponder address · allocated to Australia

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

Hex
7C68A2
Octal
37064242
Decimal
8,153,250
Country
AU
Tail
VH-UYC
Type
E190
Broadcasting now · callsign QLK1882 · 32,000 ft
Flights observed
157
Distinct callsigns
20
Country
AU
Last broadcast
1h ago

Current position

7C68A2 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 7C68A2 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
QLK1885 - 6 2026-06-27
QLK1983 - 5 2026-07-03
QLK1823 - 5 2026-06-20
QLK1984 - 4 2026-07-03
QLK1982 - 4 2026-07-03
QLK1981 - 4 2026-07-02
QLK1972 - 4 2026-06-28
QLK1833 - 4 2026-07-03
QLK1830 - 4 2026-07-03
QLK1997 - 3 2026-06-16
QLK1996 - 3 2026-06-16
QLK1990 - 3 2026-07-01
QLK1971 - 3 2026-06-27
QLK1890 - 3 2026-06-18
QLK1882 - 3 2026-07-04
QLK1827 - 3 2026-07-04
QLK1822 - 3 2026-06-19
QLK1802 - 3 2026-06-02
QLK1801 - 3 2026-06-01
QLK1999 - 2 2026-06-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-04 QLK1882 - Jul 4, 22:20 UTCJul 4, 22:30 UTC10m
2026-07-04 QLK1827 - Jul 4, 05:15 UTCJul 4, 06:20 UTC1h 5m
2026-07-04 QLK1826 - Jul 4, 02:55 UTCJul 4, 04:20 UTC1h 25m
2026-07-03 QLK1833 - Jul 3, 20:05 UTCJul 3, 21:15 UTC1h 10m
2026-07-03 QLK1830 - Jul 3, 07:25 UTCJul 3, 08:45 UTC1h 20m
2026-07-03 QLK1984 - Jul 3, 04:40 UTCJul 3, 05:40 UTC1h 0m
2026-07-03 QLK1983 - Jul 3, 02:40 UTCJul 3, 03:50 UTC1h 10m
2026-07-03 QLK1982 - Jul 3, 00:30 UTCJul 3, 01:35 UTC1h 5m
2026-07-02 QLK1981 - Jul 2, 22:25 UTCJul 2, 23:35 UTC1h 10m
2026-07-02 QLK1894 BNE → BNE Jul 2, 07:25 UTCJul 2, 09:55 UTC2h 30m
2026-07-02 QLK1984 - Jul 2, 05:00 UTCJul 2, 06:00 UTC1h 0m
2026-07-02 QLK1983 - Jul 2, 02:50 UTCJul 2, 04:00 UTC1h 10m
2026-07-02 QLK1917 - Jul 2, 00:55 UTCJul 2, 01:35 UTC40m
2026-07-01 QLK1918 - Jul 1, 22:55 UTCJul 1, 23:30 UTC35m
2026-07-01 QLK1990 BNE → BNE Jul 1, 04:50 UTCJul 1, 09:45 UTC4h 55m
2026-07-01 QLK1948 - Jul 1, 01:10 UTCJul 1, 02:35 UTC1h 25m
2026-06-30 QLK1947 - Jun 30, 22:45 UTCJul 1, 00:15 UTC1h 30m
2026-06-30 QLK1833 - Jun 30, 20:05 UTCJun 30, 21:15 UTC1h 10m
2026-06-30 QLK1832 - Jun 30, 10:05 UTCJun 30, 11:25 UTC1h 20m
2026-06-30 QLK1846 BNE → BNE Jun 30, 05:20 UTCJun 30, 07:55 UTC2h 35m
2026-06-30 QLK1844 BNE → BNE Jun 30, 00:55 UTCJun 30, 03:35 UTC2h 41m
2026-06-29 QLK1821 - Jun 29, 22:15 UTCJun 29, 23:25 UTC1h 10m
2026-06-29 QLK1820 - Jun 29, 19:54 UTCJun 29, 21:24 UTC1h 30m
2026-06-29 QLK1831 - Jun 29, 09:44 UTCJun 29, 10:55 UTC1h 10m
2026-06-29 QLK1830 - Jun 29, 07:40 UTCJun 29, 09:05 UTC1h 25m
2026-06-29 QLK1984 - Jun 29, 04:25 UTCJun 29, 05:24 UTC1h 0m
2026-06-29 QLK1983 - Jun 29, 02:35 UTCJun 29, 03:34 UTC1h 0m
2026-06-29 QLK1982 - Jun 29, 00:24 UTCJun 29, 01:25 UTC1h 0m
2026-06-28 QLK1981 - Jun 28, 22:20 UTCJun 28, 23:25 UTC1h 5m
2026-06-28 QLK1988 - Jun 28, 20:09 UTCJun 28, 21:10 UTC1h 0m
2026-06-28 QLK1987 - Jun 28, 09:45 UTCJun 28, 10:44 UTC1h 0m
2026-06-28 QLK1922 BNE → BNE Jun 28, 05:29 UTCJun 28, 08:00 UTC2h 30m
2026-06-28 QLK1972 ABX → BNE Jun 28, 02:34 UTCJun 28, 04:15 UTC1h 40m
2026-06-27 QLK1971 BNE → ABX Jun 27, 23:55 UTCJun 28, 01:40 UTC1h 45m
2026-06-27 QLK1891 BNE → BNE Jun 27, 07:15 UTCJun 27, 21:55 UTC14h 40m
2026-06-27 QLK1885 - Jun 27, 04:44 UTCJun 27, 05:59 UTC1h 15m
2026-06-26 QLK1885 - Jun 26, 08:34 UTCJun 27, 05:59 UTC21h 25m
2026-06-26 QLK1888 BNE → BNE Jun 26, 07:10 UTCJun 27, 05:59 UTC22h 50m
2026-06-26 QLK1928 BNE → BNE Jun 26, 02:54 UTCJun 26, 06:00 UTC3h 5m
2026-06-26 QLK1982 - Jun 26, 00:05 UTCJun 26, 01:10 UTC1h 5m
2026-06-25 QLK1981 - Jun 25, 22:10 UTCJun 25, 23:14 UTC1h 5m
2026-06-25 QLK1868 BNE → BNE Jun 25, 06:14 UTCJun 25, 10:35 UTC4h 20m
2026-06-25 QLK1972 ABX → BNE Jun 25, 03:24 UTCJun 25, 05:05 UTC1h 40m
2026-06-24 QLK1971 - Jun 24, 23:45 UTCJun 25, 02:39 UTC2h 55m
2026-06-24 QLK1891 BNE → BNE Jun 24, 07:15 UTCJun 24, 21:50 UTC14h 35m
2026-06-24 QLK1885 - Jun 24, 04:55 UTCJun 24, 06:04 UTC1h 10m
2026-06-23 QLK1885 - Jun 23, 08:35 UTCJun 24, 06:04 UTC21h 30m
2026-06-23 QLK1888 BNE → BNE Jun 23, 07:09 UTCJun 24, 06:04 UTC22h 55m
2026-06-23 QLK1950 - Jun 23, 04:00 UTCJun 23, 05:24 UTC1h 25m
2026-06-23 QLK1949 - Jun 23, 01:30 UTCJun 23, 03:00 UTC1h 30m

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

Mode-S 7C68A2 frequently asked

What is Mode-S code 7C68A2?
7C68A2 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-UYC.
Where is Mode-S 7C68A2 registered?
Mode-S code 7C68A2 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C68A2 broadcasting right now?
Yes. Mode-S 7C68A2 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C68A2, octal 37064242, decimal 8,153,250.
What flights does 7C68A2 operate?
Mode-S 7C68A2 has broadcast 20 distinct callsigns, including QLK1885, QLK1983, QLK1823, QLK1984, QLK1982.