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sensors Mode-S transponder

300A4B

ICAO 24-bit transponder address · allocated to Italy

Currently assigned to I-CABY · GUIMBAL G-2 Cabri

Hex
300A4B
Octal
14005113
Decimal
3,148,363
Country
IT
Tail
I-CABY
Type
G2CA
No current signal · last broadcast 2d ago
Flights observed
38
Distinct callsigns
1
Country
IT
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 300A4B.

Country allocation

The ICAO 24-bit address 300A4B falls within the block assigned to Italy (IT) by ICAO Annex 10, Volume III. Every aircraft registered in Italy 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 1 distinct

Callsign Airline Flights Last seen
ICABY - 38 2026-07-02

Recent flights last 38

DateFlightRouteTakeoffLandingDuration
2026-07-02 ICABY - Jul 2, 10:25 UTCJul 2, 10:35 UTC10m
2026-06-30 ICABY - Jun 30, 06:05 UTCJun 30, 06:40 UTC35m
2026-06-29 ICABY - Jun 29, 06:05 UTCJun 29, 06:29 UTC25m
2026-06-28 ICABY - Jun 28, 13:04 UTCJun 28, 13:25 UTC20m
2026-06-28 ICABY - Jun 28, 05:45 UTCJun 28, 06:30 UTC45m
2026-06-27 ICABY - Jun 27, 11:55 UTCJun 27, 12:04 UTC10m
2026-06-26 ICABY - Jun 26, 12:44 UTCJun 26, 12:59 UTC15m
2026-06-25 ICABY - Jun 25, 16:45 UTCJun 25, 17:09 UTC25m
2026-06-24 ICABY - Jun 24, 16:05 UTCJun 24, 16:14 UTC10m
2026-06-22 ICABY - Jun 22, 11:24 UTCJun 22, 12:00 UTC35m
2026-06-22 ICABY - Jun 22, 09:54 UTCJun 22, 10:40 UTC45m
2026-06-21 ICABY - Jun 21, 16:49 UTCJun 21, 17:24 UTC35m
2026-06-21 ICABY - Jun 21, 06:50 UTCJun 21, 07:00 UTC10m
2026-06-20 ICABY - Jun 20, 09:59 UTCJun 20, 10:15 UTC15m
2026-06-18 ICABY - Jun 18, 06:15 UTCJun 18, 06:45 UTC30m
2026-06-17 ICABY - Jun 17, 20:40 UTCJun 17, 20:50 UTC10m
2026-06-17 ICABY - Jun 17, 13:55 UTCJun 17, 15:46 UTC1h 50m
2026-06-17 ICABY - Jun 17, 08:35 UTCJun 17, 09:35 UTC1h 0m
2026-06-17 ICABY - Jun 17, 06:35 UTCJun 17, 07:40 UTC1h 5m
2026-06-13 ICABY - Jun 13, 11:25 UTCJun 13, 11:35 UTC10m
2026-06-13 ICABY - Jun 13, 08:40 UTCJun 13, 08:50 UTC10m
2026-06-08 ICABY - Jun 8, 06:05 UTCJun 8, 06:35 UTC30m
2026-06-02 ICABY - Jun 2, 08:15 UTCJun 2, 08:40 UTC25m
2026-06-02 ICABY - Jun 2, 05:55 UTCJun 2, 06:50 UTC55m
2026-05-28 ICABY - May 28, 09:35 UTCMay 28, 10:10 UTC35m
2026-05-28 ICABY - May 28, 08:10 UTCMay 28, 08:40 UTC30m
2026-05-28 ICABY - May 28, 07:00 UTCMay 28, 07:25 UTC25m
2026-05-27 ICABY - May 27, 09:10 UTCMay 27, 09:30 UTC20m
2026-05-25 ICABY - May 25, 08:10 UTCMay 25, 08:40 UTC30m
2026-05-24 ICABY - May 24, 09:05 UTCMay 24, 10:15 UTC1h 10m
2026-05-22 ICABY - May 22, 15:20 UTCMay 22, 15:30 UTC10m
2026-05-22 ICABY - May 22, 14:10 UTCMay 22, 14:35 UTC25m
2026-05-20 ICABY - May 20, 09:50 UTCMay 20, 10:30 UTC40m
2026-05-19 ICABY - May 19, 08:10 UTCMay 19, 08:25 UTC15m
2026-05-08 ICABY - May 8, 13:15 UTCMay 8, 13:35 UTC20m
2026-05-08 ICABY - May 8, 06:50 UTCMay 8, 07:14 UTC25m
2026-05-07 ICABY - May 7, 17:15 UTCMay 7, 17:40 UTC25m
2026-05-07 ICABY - May 7, 08:25 UTCMay 7, 08:55 UTC30m

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 I-CABY page for operator, model, and routing details .

Mode-S 300A4B frequently asked

What is Mode-S code 300A4B?
300A4B is an ICAO 24-bit transponder address. Allocated to Italy. Assigned to I-CABY.
Where is Mode-S 300A4B registered?
Mode-S code 300A4B is allocated to Italy (IT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 300A4B broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 300A4B, octal 14005113, decimal 3,148,363.
What flights does 300A4B operate?
Mode-S 300A4B has broadcast 1 distinct callsign, including ICABY.