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sensors Mode-S transponder

4CADC6

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-HJN · AIRBUS A-330-900

Hex
4CADC6
Octal
23126706
Decimal
5,025,222
Country
IE
Tail
EI-HJN
Type
A339
No current signal · last broadcast 1h ago
Flights observed
137
Distinct callsigns
20
Country
IE
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 4CADC6.

Country allocation

The ICAO 24-bit address 4CADC6 falls within the block assigned to Ireland (IE) by ICAO Annex 10, Volume III. Every aircraft registered in Ireland 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
ITY673 - 12 2026-07-11
ITY672 - 9 2026-07-03
ITY678 - 8 2026-07-16
ITY679 - 7 2026-07-16
ITY675 - 7 2026-07-15
ITY641 - 7 2026-07-13
ITY640 - 7 2026-07-13
ITY674 - 6 2026-07-14
ITY615 - 6 2026-06-18
ITY614 - 6 2026-06-18
ITY6KC - 5 2026-06-25
ITY610 - 5 2026-06-24
ITY651 - 4 2026-07-07
ITY630 ITA Airways 4 2026-06-22
ITY603 ITA Airways 4 2026-06-01
ITY602 ITA Airways 4 2026-06-01
ITY6MO - 3 2026-06-22
ITY650 - 3 2026-07-07
ITY8012 ITA Airways 2 2026-06-30
ITY770 - 2 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 ITY769 DEL → FCO Jul 17, 22:25 UTCJul 18, 05:30 UTC7h 6m
2026-07-17 ITY770 - Jul 17, 13:00 UTCJul 17, 20:10 UTC7h 10m
2026-07-16 ITY679 - Jul 16, 22:10 UTCJul 17, 08:54 UTC10h 45m
2026-07-16 ITY678 - Jul 16, 08:25 UTCJul 16, 19:40 UTC11h 15m
2026-07-15 ITY675 - Jul 15, 17:25 UTCJul 16, 04:20 UTC10h 55m
2026-07-14 ITY674 FCO → GRU Jul 14, 20:30 UTCJul 15, 07:45 UTC11h 14m
2026-07-13 ITY641 SFO → FCO Jul 13, 23:15 UTCJul 14, 10:15 UTC11h 0m
2026-07-13 ITY640 - Jul 13, 08:20 UTCJul 13, 21:05 UTC12h 45m
2026-07-12 ITY629 - Jul 12, 20:20 UTCJul 13, 05:25 UTC9h 5m
2026-07-12 ITY628 - Jul 12, 07:50 UTCJul 12, 17:30 UTC9h 40m
2026-07-11 ITY673 - Jul 11, 17:35 UTCJul 12, 03:55 UTC10h 20m
2026-07-10 ITY8672 - Jul 10, 20:45 UTCJul 11, 07:55 UTC11h 10m
2026-07-10 ITY633 MIA → FCO Jul 10, 03:50 UTCJul 10, 13:30 UTC9h 40m
2026-07-09 ITY632 - Jul 9, 13:35 UTCJul 9, 23:55 UTC10h 20m
2026-07-08 ITY641 - Jul 8, 23:35 UTCJul 9, 10:55 UTC11h 20m
2026-07-08 ITY640 - Jul 8, 08:40 UTCJul 8, 20:55 UTC12h 15m
2026-07-07 ITY651 YYZ → FCO Jul 7, 21:25 UTCJul 8, 05:45 UTC8h 20m
2026-07-07 ITY650 - Jul 7, 09:40 UTCJul 7, 18:10 UTC8h 30m
2026-07-07 ITY651 - Jul 7, 04:50 UTCJul 7, 06:20 UTC1h 30m
2026-07-06 ITY651 - Jul 6, 22:30 UTCJul 7, 04:45 UTC6h 15m
2026-07-06 ITY650 - Jul 6, 10:45 UTCJul 6, 19:45 UTC9h 0m
2026-07-05 ITY629 - Jul 5, 20:55 UTCJul 6, 05:15 UTC8h 20m
2026-07-05 ITY628 - Jul 5, 08:30 UTCJul 5, 18:40 UTC10h 10m
2026-07-04 ITY673 GIG → FCO Jul 4, 17:45 UTCJul 5, 04:15 UTC10h 30m
2026-07-03 ITY672 FCO → GIG Jul 3, 22:30 UTCJul 4, 09:30 UTC11h 0m
2026-07-03 ITY759 - Jul 3, 05:40 UTCJul 3, 17:10 UTC11h 30m
2026-07-02 ITY758 - Jul 2, 14:05 UTCJul 3, 01:00 UTC10h 55m
2026-07-01 ITY641 SFO → FCO Jul 1, 23:45 UTCJul 2, 11:05 UTC11h 20m
2026-07-01 ITY640 - Jul 1, 09:15 UTCJul 1, 21:10 UTC11h 55m
2026-06-30 ITY8012 FCO → NAP Jun 30, 16:35 UTCJun 30, 17:00 UTC25m
2026-06-27 ITY8006 - Jun 27, 15:39 UTCJun 27, 16:04 UTC25m
2026-06-26 ITY633 MIA → FCO Jun 26, 03:24 UTCJun 26, 12:55 UTC9h 30m
2026-06-25 ITY632 FCO → MIA Jun 25, 13:24 UTCJun 25, 23:34 UTC10h 10m
2026-06-25 ITY6KC - Jun 25, 02:10 UTCJun 25, 09:59 UTC7h 50m
2026-06-24 ITY610 - Jun 24, 14:20 UTCJun 24, 23:54 UTC9h 35m
2026-06-24 ITY6KC - Jun 24, 01:55 UTCJun 24, 09:45 UTC7h 50m
2026-06-23 ITY610 - Jun 23, 13:39 UTCJun 23, 22:34 UTC8h 55m
2026-06-22 ITY6MO - Jun 22, 23:55 UTCJun 23, 09:29 UTC9h 35m
2026-06-22 ITY630 FCO → MIA Jun 22, 09:04 UTCJun 22, 19:29 UTC10h 25m
2026-06-21 ITY673 GIG → FCO Jun 21, 17:29 UTCJun 22, 04:19 UTC10h 50m
2026-06-20 ITY672 - Jun 20, 21:25 UTCJun 21, 08:10 UTC10h 45m
2026-06-19 ITY679 - Jun 19, 22:09 UTCJun 20, 09:05 UTC10h 55m
2026-06-19 ITY678 - Jun 19, 08:09 UTCJun 19, 19:29 UTC11h 20m
2026-06-18 ITY615 BOS → FCO Jun 18, 21:20 UTCJun 19, 04:50 UTC7h 29m
2026-06-18 ITY614 - Jun 18, 09:25 UTCJun 18, 17:45 UTC8h 20m
2026-06-17 ITY619 IAD → FCO Jun 17, 22:45 UTCJun 18, 06:45 UTC8h 0m
2026-06-17 ITY618 FCO → IAD Jun 17, 11:20 UTCJun 17, 20:35 UTC9h 15m
2026-06-15 ITY675 - Jun 15, 17:25 UTCJun 16, 04:15 UTC10h 50m
2026-06-14 ITY674 - Jun 14, 21:00 UTCJun 15, 08:54 UTC11h 54m
2026-06-14 ITY6KC JFK → FCO Jun 14, 01:50 UTCJun 14, 09:35 UTC7h 45m

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 EI-HJN page for operator, model, and routing details .

Mode-S 4CADC6 frequently asked

What is Mode-S code 4CADC6?
4CADC6 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-HJN.
Where is Mode-S 4CADC6 registered?
Mode-S code 4CADC6 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CADC6 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CADC6, octal 23126706, decimal 5,025,222.
What flights does 4CADC6 operate?
Mode-S 4CADC6 has broadcast 20 distinct callsigns, including ITY673, ITY672, ITY678, ITY679, ITY675.