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sensors Mode-S transponder

7C68B8

ICAO 24-bit transponder address · allocated to Australia

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

Hex
7C68B8
Octal
37064270
Decimal
8,153,272
Country
AU
Tail
VH-UYY
Type
E190
No current signal · last broadcast Jul 26, 21:20 UTC
Flights observed
358
Distinct callsigns
20
Country
AU
Last broadcast
Jul 26, 21:20 UTC

Last known position

Most recent position reported by Mode-S 7C68B8.

Country allocation

The ICAO 24-bit address 7C68B8 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 - 16 2026-07-01
QLK1944 - 14 2026-07-01
QLK1955 - 9 2026-07-13
QLK1983 - 8 2026-07-26
QLK1972 - 8 2026-07-04
QLK1956 - 8 2026-07-13
QLK1828 - 8 2026-07-09
QLK1982 - 7 2026-07-11
QLK1971 - 7 2026-07-03
QLK1954 - 7 2026-07-17
QLK1984 - 6 2026-06-03
QLK1981 - 6 2026-07-10
QLK1953 - 6 2026-07-17
QLK1950 - 6 2026-07-23
QLK1949 - 6 2026-07-23
QLK1840 - 6 2026-07-07
QLK1825 - 6 2026-07-17
QLK1824 - 6 2026-07-17
QLK1990 - 5 2026-07-02
QLK1947 - 5 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 QLK1988 - Jul 26, 20:10 UTCJul 26, 21:15 UTC1h 5m
2026-07-26 QLK1999 - Jul 26, 08:20 UTCJul 26, 09:35 UTC1h 15m
2026-07-26 QLK1998 - Jul 26, 05:40 UTCJul 26, 06:55 UTC1h 16m
2026-07-26 QLK1983 - Jul 26, 02:55 UTCJul 26, 03:55 UTC1h 0m
2026-07-25 QLK1876 BNE → BNE Jul 25, 22:50 UTCJul 26, 01:55 UTC3h 5m
2026-07-25 QLK1874 - Jul 25, 01:30 UTCJul 25, 08:05 UTC6h 35m
2026-07-24 QLK1870 BNE → BNE Jul 24, 09:30 UTCJul 24, 21:35 UTC12h 5m
2026-07-24 QLK1930 BNE → BNE Jul 24, 04:45 UTCJul 24, 07:50 UTC3h 5m
2026-07-24 QLK1844 BNE → BNE Jul 24, 00:50 UTCJul 24, 03:30 UTC2h 40m
2026-07-23 QLK1800 ADL → BNE Jul 23, 21:20 UTCJul 23, 23:20 UTC2h 0m
2026-07-23 QLK1811 BNE → ADL Jul 23, 09:15 UTCJul 23, 12:05 UTC2h 50m
2026-07-23 QLK1950 - Jul 23, 04:45 UTCJul 23, 06:10 UTC1h 25m
2026-07-23 QLK1949 - Jul 23, 02:15 UTCJul 23, 03:45 UTC1h 30m
2026-07-22 QLK1872 BNE → BNE Jul 22, 20:50 UTCJul 23, 00:35 UTC3h 45m
2026-07-22 QLK1806 - Jul 22, 04:05 UTCJul 22, 05:25 UTC1h 20m
2026-07-21 QLK1816 ADL → ADL Jul 21, 22:30 UTCJul 22, 03:05 UTC4h 35m
2026-07-20 QLK1993 SYD → ADL Jul 20, 22:30 UTCJul 21, 00:20 UTC1h 50m
2026-07-20 QLK1814 - Jul 20, 20:20 UTCJul 20, 20:55 UTC35m
2026-07-20 QLK1798 - Jul 20, 07:10 UTCJul 20, 08:25 UTC1h 15m
2026-07-20 QLK1797 - Jul 20, 04:25 UTCJul 20, 06:00 UTC1h 35m
2026-07-20 QLK1796 - Jul 20, 02:05 UTCJul 20, 03:20 UTC1h 15m
2026-07-19 QLK1993 SYD → ADL Jul 19, 22:25 UTCJul 20, 00:15 UTC1h 50m
2026-07-19 QLK1814 - Jul 19, 20:35 UTCJul 19, 21:05 UTC30m
2026-07-19 QLK1813 - Jul 19, 06:55 UTCJul 19, 07:20 UTC25m
2026-07-19 QLK1992 ADL → SYD Jul 19, 04:15 UTCJul 19, 05:50 UTC1h 35m
2026-07-18 QLK1816 ADL → ADL Jul 18, 22:30 UTCJul 19, 02:55 UTC4h 25m
2026-07-18 QLK1807 BNE → ADL Jul 18, 04:40 UTCJul 18, 07:00 UTC2h 20m
2026-07-18 QLK1948 - Jul 18, 01:20 UTCJul 18, 02:50 UTC1h 31m
2026-07-17 QLK1947 - Jul 17, 22:49 UTCJul 18, 00:19 UTC1h 30m
2026-07-17 QLK1954 - Jul 17, 07:55 UTCJul 17, 09:25 UTC1h 30m
2026-07-17 QLK1953 - Jul 17, 05:35 UTCJul 17, 07:00 UTC1h 25m
2026-07-17 QLK1825 MKY → BNE Jul 17, 03:05 UTCJul 17, 04:25 UTC1h 20m
2026-07-17 QLK1824 - Jul 17, 00:55 UTCJul 17, 02:10 UTC1h 15m
2026-07-16 QLK1800 ADL → BNE Jul 16, 21:15 UTCJul 16, 23:29 UTC2h 15m
2026-07-16 QLK1811 BNE → ADL Jul 16, 09:15 UTCJul 16, 11:30 UTC2h 15m
2026-07-16 QLK1806 ADL → BNE Jul 16, 04:10 UTCJul 16, 06:30 UTC2h 20m
2026-07-16 QLK1805 BNE → ADL Jul 16, 00:35 UTCJul 16, 02:50 UTC2h 15m
2026-07-15 QLK1954 - Jul 15, 08:10 UTCJul 15, 09:45 UTC1h 35m
2026-07-15 QLK1953 - Jul 15, 05:45 UTCJul 15, 07:15 UTC1h 30m
2026-07-13 QLK1956 - Jul 13, 08:50 UTCJul 13, 10:15 UTC1h 25m
2026-07-13 QLK1955 - Jul 13, 06:25 UTCJul 13, 07:55 UTC1h 30m
2026-07-12 QLK2680 BNE → BNE Jul 12, 21:55 UTCJul 13, 04:55 UTC7h 0m
2026-07-12 QLK1954 - Jul 12, 08:10 UTCJul 12, 09:35 UTC1h 25m
2026-07-12 QLK1953 - Jul 12, 05:40 UTCJul 12, 07:10 UTC1h 30m
2026-07-11 QLK1896 BNE → BNE Jul 11, 23:10 UTCJul 12, 04:40 UTC5h 30m
2026-07-11 QLK1866 BNE → BNE Jul 11, 05:05 UTCJul 11, 21:45 UTC16h 40m
2026-07-11 QLK1982 - Jul 11, 01:10 UTCJul 11, 02:10 UTC1h 0m
2026-07-10 QLK1981 - Jul 10, 22:10 UTCJul 11, 00:15 UTC2h 5m
2026-07-10 QLK1956 - Jul 10, 08:55 UTCJul 10, 10:20 UTC1h 25m
2026-07-10 QLK1955 - Jul 10, 06:35 UTCJul 10, 08:00 UTC1h 25m

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

Mode-S 7C68B8 frequently asked

What is Mode-S code 7C68B8?
7C68B8 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-UYY.
Where is Mode-S 7C68B8 registered?
Mode-S code 7C68B8 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C68B8 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C68B8, octal 37064270, decimal 8,153,272.
What flights does 7C68B8 operate?
Mode-S 7C68B8 has broadcast 20 distinct callsigns, including QLK1943, QLK1944, QLK1955, QLK1983, QLK1972.