Apparatus

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sensors Mode-S transponder

7C03F1

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-A2B · EMBRAER ERJ-190-100

Hex
7C03F1
Octal
37001761
Decimal
8,127,473
Country
AU
Tail
VH-A2B
Type
E190
No current signal · last broadcast 1d ago
Flights observed
49
Distinct callsigns
20
Country
AU
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 7C03F1.

Country allocation

The ICAO 24-bit address 7C03F1 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
UTY926 Alliance Airlines 3 2026-06-09
UTY4824 Alliance Airlines 3 2026-04-17
UTY4807 - 3 2026-06-15
UTY4801 - 3 2026-06-08
UTY3136 - 3 2026-07-10
UTY3104 - 3 2026-07-13
UTY4823 - 2 2026-04-20
UTY3120 - 2 2026-07-14
UTY3119 - 2 2026-07-16
UTY3114 - 2 2026-07-14
UTY3110 Alliance Airlines 2 2026-07-16
UTY3102 - 2 2026-07-15
QLK1980 - 2 2026-06-06
UTY927 Alliance Airlines 1 2026-06-16
UTY5987 Alliance Airlines 1 2026-05-20
UTY4808 Alliance Airlines 1 2026-06-01
UTY4804 - 1 2026-05-15
UTY3240 - 1 2026-07-12
UTY3204 - 1 2026-07-10
UTY3160 - 1 2026-07-15

Recent flights last 49

DateFlightRouteTakeoffLandingDuration
2026-07-16 UTY3110 ADL → OLP Jul 16, 21:55 UTCJul 17, 00:30 UTC2h 35m
2026-07-16 UTY3119 - Jul 16, 01:20 UTCJul 16, 04:00 UTC2h 40m
2026-07-15 UTY3102 ADL → ADL Jul 15, 21:10 UTCJul 15, 23:45 UTC2h 35m
2026-07-15 UTY3149 - Jul 15, 08:40 UTCJul 15, 11:20 UTC2h 40m
2026-07-15 UTY3160 ADL → ADL Jul 15, 05:00 UTCJul 15, 07:35 UTC2h 35m
2026-07-14 UTY3114 ADL → ADL Jul 14, 22:10 UTCJul 15, 01:30 UTC3h 19m
2026-07-14 UTY3120 ADL → ADL Jul 14, 02:10 UTCJul 14, 08:55 UTC6h 45m
2026-07-13 UTY3104 ADL → ADL Jul 13, 21:35 UTCJul 14, 01:00 UTC3h 25m
2026-07-13 UTY3148 ADL → ADL Jul 13, 08:35 UTCJul 13, 11:30 UTC2h 55m
2026-07-12 UTY3240 ADL → ADL Jul 12, 06:30 UTCJul 12, 09:10 UTC2h 40m
2026-07-10 UTY3204 ADL → ADL Jul 10, 21:40 UTCJul 11, 00:25 UTC2h 45m
2026-07-10 UTY3136 ADL → ADL Jul 10, 05:40 UTCJul 10, 08:25 UTC2h 45m
2026-07-09 UTY3110 ADL → OLP Jul 9, 22:40 UTCJul 10, 01:05 UTC2h 25m
2026-07-09 UTY3138 ADL → ADL Jul 9, 06:10 UTCJul 9, 10:00 UTC3h 50m
2026-07-09 UTY3119 ADL → ADL Jul 9, 01:20 UTCJul 9, 04:20 UTC3h 0m
2026-07-08 UTY3102 ADL → ADL Jul 8, 21:10 UTCJul 8, 23:55 UTC2h 45m
2026-07-08 UTY3152 ADL → ADL Jul 8, 09:45 UTCJul 8, 12:15 UTC2h 30m
2026-07-08 UTY3136 ADL → ADL Jul 8, 05:35 UTCJul 8, 08:30 UTC2h 55m
2026-07-07 UTY3114 ADL → ADL Jul 7, 22:00 UTCJul 8, 00:55 UTC2h 55m
2026-07-07 UTY3120 ADL → ADL Jul 7, 02:10 UTCJul 7, 08:55 UTC6h 45m
2026-07-06 UTY3104 ADL → ADL Jul 6, 21:50 UTCJul 7, 01:00 UTC3h 10m
2026-07-06 UTY3150 ADL → ADL Jul 6, 09:30 UTCJul 6, 12:30 UTC3h 0m
2026-07-06 UTY3136 ADL → ADL Jul 6, 05:40 UTCJul 6, 08:15 UTC2h 35m
2026-07-05 UTY3104 ADL → ADL Jul 5, 21:45 UTCJul 6, 01:10 UTC3h 25m
2026-07-02 QLK1907 - Jul 2, 23:35 UTCJul 3, 00:10 UTC35m
2026-06-16 UTY927 GTE → DRW Jun 16, 11:00 UTCJun 16, 11:15 UTC15m
2026-06-15 UTY4807 - Jun 15, 05:55 UTCJun 15, 06:04 UTC10m
2026-06-09 UTY926 DRW → GTE Jun 9, 08:35 UTCJun 9, 08:50 UTC15m
2026-06-08 UTY4801 - Jun 8, 20:30 UTCJun 8, 20:40 UTC10m
2026-06-06 QLK1980 - Jun 6, 03:05 UTCJun 6, 03:15 UTC10m
2026-06-02 UTY926 DRW → GTE Jun 2, 08:25 UTCJun 2, 08:40 UTC15m
2026-06-01 UTY4808 DRW → PER Jun 1, 09:30 UTCJun 1, 09:45 UTC15m
2026-05-25 UTY4807 - May 25, 05:50 UTCMay 25, 06:00 UTC10m
2026-05-20 UTY5987 GTE → DRW May 20, 05:10 UTCMay 20, 05:25 UTC15m
2026-05-15 UTY4804 - May 15, 03:05 UTCMay 15, 03:15 UTC10m
2026-05-14 UTY4801 - May 14, 20:30 UTCMay 14, 20:40 UTC10m
2026-04-27 UTY4807 - Apr 27, 05:35 UTCApr 27, 05:45 UTC10m
2026-04-20 UTY4823 - Apr 20, 20:15 UTCApr 20, 20:50 UTC35m
2026-04-20 QLK1828 BNE → BNE Apr 20, 05:15 UTCApr 20, 08:35 UTC3h 20m
2026-04-19 QLK1882 BNE → BNE Apr 19, 22:25 UTCApr 20, 03:25 UTC5h 0m
2026-04-19 QLK1865 BNE → BNE Apr 19, 06:15 UTCApr 19, 10:20 UTC4h 5m
2026-04-17 UTY4824 ASP → BNE Apr 17, 03:20 UTCApr 17, 03:40 UTC20m
2026-04-17 UTY4824 ASP → BNE Apr 17, 03:05 UTCApr 17, 03:15 UTC10m
2026-04-16 UTY4823 - Apr 16, 20:10 UTCApr 16, 20:45 UTC35m
2026-04-16 UTY4824 ASP → BNE Apr 16, 08:00 UTCApr 16, 08:40 UTC40m
2026-04-15 QLK1980 - Apr 15, 03:00 UTCApr 15, 03:10 UTC10m
2026-04-14 UTY926 - Apr 14, 08:35 UTCApr 14, 08:45 UTC10m
2026-04-13 UTY4801 - Apr 13, 20:45 UTCApr 13, 20:55 UTC10m
2026-04-13 - - Apr 13, 03:00 UTCApr 13, 03:10 UTC10m

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-A2B page for operator, model, and routing details .

Mode-S 7C03F1 frequently asked

What is Mode-S code 7C03F1?
7C03F1 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-A2B.
Where is Mode-S 7C03F1 registered?
Mode-S code 7C03F1 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C03F1 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 7C03F1, octal 37001761, decimal 8,127,473.
What flights does 7C03F1 operate?
Mode-S 7C03F1 has broadcast 20 distinct callsigns, including UTY926, UTY4824, UTY4807, UTY4801, UTY3136.