Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

300603

ICAO 24-bit transponder address · allocated to Italy

Currently assigned to I-ECGX · BELL 407

Hex
300603
Octal
14003003
Decimal
3,147,267
Country
IT
Tail
I-ECGX
Type
B407
No current signal · last broadcast 1d ago
Flights observed
112
Distinct callsigns
1
Country
IT
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 300603.

Country allocation

The ICAO 24-bit address 300603 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
IECGX - 111 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 IECGX - Jul 16, 18:25 UTCJul 16, 18:55 UTC30m
2026-07-16 IECGX - Jul 16, 16:40 UTCJul 16, 17:25 UTC45m
2026-07-16 IECGX - Jul 16, 15:10 UTCJul 16, 16:05 UTC55m
2026-07-14 IECGX - Jul 14, 16:35 UTCJul 14, 17:45 UTC1h 10m
2026-07-14 IECGX - Jul 14, 05:50 UTCJul 14, 06:55 UTC1h 5m
2026-07-13 IECGX - Jul 13, 07:50 UTCJul 13, 09:35 UTC1h 45m
2026-07-13 IECGX - Jul 13, 06:25 UTCJul 13, 06:35 UTC10m
2026-07-12 IECGX - Jul 12, 14:40 UTCJul 12, 15:05 UTC25m
2026-07-11 IECGX - Jul 11, 13:30 UTCJul 11, 15:40 UTC2h 10m
2026-07-11 IECGX - Jul 11, 10:35 UTCJul 11, 10:45 UTC10m
2026-07-10 IECGX - Jul 10, 10:25 UTCJul 10, 10:50 UTC25m
2026-07-09 IECGX - Jul 9, 18:15 UTCJul 9, 18:45 UTC30m
2026-07-09 IECGX - Jul 9, 17:15 UTCJul 9, 17:45 UTC30m
2026-07-08 IECGX - Jul 8, 14:25 UTCJul 8, 14:55 UTC30m
2026-07-07 IECGX - Jul 7, 14:45 UTCJul 7, 15:30 UTC45m
2026-07-06 IECGX - Jul 6, 14:05 UTCJul 6, 14:15 UTC10m
2026-07-06 IECGX - Jul 6, 09:00 UTCJul 6, 09:15 UTC15m
2026-07-06 IECGX - Jul 6, 06:55 UTCJul 6, 07:30 UTC35m
2026-07-05 IECGX - Jul 5, 17:30 UTCJul 5, 18:00 UTC30m
2026-07-05 IECGX - Jul 5, 15:45 UTCJul 5, 15:55 UTC10m
2026-07-04 IECGX - Jul 4, 13:05 UTCJul 4, 14:55 UTC1h 50m
2026-07-04 IECGX - Jul 4, 09:40 UTCJul 4, 10:35 UTC55m
2026-07-02 IECGX - Jul 2, 08:40 UTCJul 2, 10:40 UTC2h 0m
2026-07-01 IECGX - Jul 1, 13:20 UTCJul 1, 14:15 UTC55m
2026-07-01 IECGX - Jul 1, 11:55 UTCJul 1, 12:45 UTC50m
2026-07-01 IECGX - Jul 1, 10:00 UTCJul 1, 10:55 UTC55m
2026-06-29 IECGX - Jun 29, 09:40 UTCJun 29, 10:29 UTC50m
2026-06-29 IECGX - Jun 29, 07:05 UTCJun 29, 08:29 UTC1h 25m
2026-06-28 IECGX - Jun 28, 09:10 UTCJun 28, 10:10 UTC1h 0m
2026-06-27 IECGX - Jun 27, 16:00 UTCJun 27, 16:49 UTC50m
2026-06-27 IECGX - Jun 27, 11:59 UTCJun 27, 14:05 UTC2h 5m
2026-06-27 IECGX - Jun 27, 08:44 UTCJun 27, 10:10 UTC1h 25m
2026-06-27 IECGX - Jun 27, 07:34 UTCJun 27, 08:05 UTC30m
2026-06-26 IECGX - Jun 26, 05:39 UTCJun 26, 06:54 UTC1h 15m
2026-06-25 IECGX - Jun 25, 15:29 UTCJun 25, 15:59 UTC30m
2026-06-25 IECGX - Jun 25, 14:04 UTCJun 25, 14:50 UTC45m
2026-06-25 IECGX - Jun 25, 12:30 UTCJun 25, 13:05 UTC35m
2026-06-25 IECGX - Jun 25, 10:30 UTCJun 25, 11:10 UTC40m
2026-06-21 IECGX - Jun 21, 12:40 UTCJun 21, 14:15 UTC1h 35m
2026-06-21 IECGX - Jun 21, 10:09 UTCJun 21, 11:20 UTC1h 10m
2026-06-20 IECGX - Jun 20, 11:44 UTCJun 20, 13:19 UTC1h 35m
2026-06-18 IECGX - Jun 18, 08:35 UTCJun 18, 09:55 UTC1h 20m
2026-06-18 IECGX - Jun 18, 06:05 UTCJun 18, 07:55 UTC1h 50m
2026-06-15 IECGX - Jun 15, 14:00 UTCJun 15, 14:10 UTC10m
2026-06-15 IECGX - Jun 15, 10:40 UTCJun 15, 11:19 UTC40m
2026-06-15 IECGX - Jun 15, 06:30 UTCJun 15, 07:05 UTC35m
2026-06-14 IECGX - Jun 14, 12:50 UTCJun 14, 13:25 UTC35m
2026-06-14 - - Jun 14, 08:30 UTCJun 14, 08:50 UTC20m
2026-06-14 IECGX - Jun 14, 05:10 UTCJun 14, 06:45 UTC1h 35m
2026-06-07 IECGX - Jun 7, 12:35 UTCJun 7, 14:00 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 I-ECGX page for operator, model, and routing details .

Mode-S 300603 frequently asked

What is Mode-S code 300603?
300603 is an ICAO 24-bit transponder address. Allocated to Italy. Assigned to I-ECGX.
Where is Mode-S 300603 registered?
Mode-S code 300603 is allocated to Italy (IT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 300603 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 300603, octal 14003003, decimal 3,147,267.
What flights does 300603 operate?
Mode-S 300603 has broadcast 1 distinct callsign, including IECGX.