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sensors Mode-S transponder

4CADCA

ICAO 24-bit transponder address · allocated to Ireland

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

Hex
4CADCA
Octal
23126712
Decimal
5,025,226
Country
IE
Tail
EI-HJS
Type
A339
Broadcasting now · callsign ITY629 · 40,000 ft
Flights observed
133
Distinct callsigns
20
Country
IE
Last broadcast
4h ago

Current position

4CADCA is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4CADCA 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
ITY6KC ITA Airways 16 2026-06-08
ITY610 ITA Airways 14 2026-06-07
ITY770 - 7 2026-07-11
ITY630 ITA Airways 7 2026-06-27
ITY769 - 6 2026-07-11
ITY678 - 6 2026-07-10
ITY651 - 6 2026-06-15
ITY6MO - 5 2026-06-28
ITY679 - 5 2026-07-10
ITY675 - 5 2026-07-08
ITY674 - 5 2026-07-07
ITY603 - 4 2026-06-24
ITY602 - 4 2026-06-24
ITY673 ITA Airways 3 2026-07-01
ITY672 - 3 2026-06-30
ITY650 - 3 2026-06-15
ITY629 - 3 2026-07-13
ITY628 - 3 2026-07-13
ITY615 - 3 2026-06-16
ITY614 - 3 2026-06-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 ITY629 - Jul 13, 22:25 UTCJul 14, 01:20 UTC2h 55m
2026-07-13 ITY628 - Jul 13, 10:05 UTCJul 13, 19:40 UTC9h 35m
2026-07-12 ITY609 - Jul 12, 21:50 UTCJul 13, 05:45 UTC7h 55m
2026-07-12 ITY608 - Jul 12, 09:45 UTCJul 12, 18:20 UTC8h 35m
2026-07-11 ITY769 DEL → FCO Jul 11, 22:15 UTCJul 12, 06:40 UTC8h 25m
2026-07-11 ITY770 - Jul 11, 12:40 UTCJul 11, 19:40 UTC7h 0m
2026-07-10 ITY679 - Jul 10, 23:00 UTCJul 11, 09:35 UTC10h 35m
2026-07-10 ITY678 - Jul 10, 09:05 UTCJul 10, 20:25 UTC11h 20m
2026-07-09 ITY629 ORD → FCO Jul 9, 21:45 UTCJul 10, 06:25 UTC8h 40m
2026-07-09 ITY628 - Jul 9, 09:00 UTCJul 9, 18:55 UTC9h 55m
2026-07-08 ITY675 - Jul 8, 17:50 UTCJul 9, 04:45 UTC10h 55m
2026-07-07 ITY674 - Jul 7, 20:35 UTCJul 8, 08:10 UTC11h 35m
2026-07-06 ITY641 - Jul 6, 22:45 UTCJul 7, 10:00 UTC11h 15m
2026-07-06 ITY640 - Jul 6, 07:40 UTCJul 6, 20:15 UTC12h 35m
2026-07-05 ITY675 - Jul 5, 17:25 UTCJul 6, 04:15 UTC10h 50m
2026-07-04 ITY674 - Jul 4, 20:35 UTCJul 5, 08:00 UTC11h 25m
2026-07-04 ITY683 - Jul 4, 04:50 UTCJul 4, 17:20 UTC12h 30m
2026-07-03 ITY682 - Jul 3, 13:00 UTCJul 4, 02:45 UTC13h 45m
2026-07-02 ITY679 - Jul 2, 22:25 UTCJul 3, 09:20 UTC10h 55m
2026-07-02 ITY678 - Jul 2, 08:50 UTCJul 2, 20:05 UTC11h 15m
2026-07-01 ITY673 GIG → FCO Jul 1, 17:55 UTCJul 2, 04:35 UTC10h 40m
2026-06-30 ITY672 - Jun 30, 21:00 UTCJul 1, 08:10 UTC11h 10m
2026-06-29 ITY673 GIG → FCO Jun 29, 17:40 UTCJun 30, 04:05 UTC10h 25m
2026-06-28 ITY672 - Jun 28, 20:50 UTCJun 29, 07:59 UTC11h 10m
2026-06-28 ITY6MO - Jun 28, 00:25 UTCJun 28, 09:39 UTC9h 15m
2026-06-27 ITY630 FCO → MIA Jun 27, 09:15 UTCJun 27, 19:34 UTC10h 20m
2026-06-26 ITY6MO - Jun 26, 20:44 UTCJun 27, 06:09 UTC9h 25m
2026-06-26 ITY630 FCO → MIA Jun 26, 07:55 UTCJun 26, 18:29 UTC10h 35m
2026-06-25 ITY609 - Jun 25, 20:39 UTCJun 26, 04:20 UTC7h 40m
2026-06-25 ITY608 - Jun 25, 08:50 UTCJun 25, 17:54 UTC9h 5m
2026-06-24 ITY603 JFK → FCO Jun 24, 22:25 UTCJun 25, 06:05 UTC7h 40m
2026-06-24 ITY602 - Jun 24, 08:04 UTCJun 24, 17:14 UTC9h 10m
2026-06-23 ITY673 GIG → FCO Jun 23, 17:34 UTCJun 24, 04:34 UTC11h 0m
2026-06-22 ITY672 - Jun 22, 20:49 UTCJun 23, 07:40 UTC10h 50m
2026-06-21 ITY637 IAH → FCO Jun 21, 23:24 UTCJun 22, 09:40 UTC10h 15m
2026-06-21 ITY636 FCO → IAH Jun 21, 08:49 UTCJun 21, 20:29 UTC11h 40m
2026-06-20 ITY619 IAD → FCO Jun 20, 21:00 UTCJun 21, 05:04 UTC8h 5m
2026-06-20 ITY618 FCO → IAD Jun 20, 08:49 UTCJun 20, 18:19 UTC9h 30m
2026-06-19 ITY769 DEL → FCO Jun 19, 21:59 UTCJun 20, 05:54 UTC7h 55m
2026-06-19 ITY770 - Jun 19, 12:44 UTCJun 19, 19:59 UTC7h 15m
2026-06-18 ITY769 DEL → FCO Jun 18, 22:35 UTCJun 19, 06:20 UTC7h 44m
2026-06-18 ITY770 - Jun 18, 12:50 UTCJun 18, 20:00 UTC7h 10m
2026-06-17 ITY679 - Jun 17, 22:25 UTCJun 18, 09:10 UTC10h 45m
2026-06-17 ITY678 - Jun 17, 08:20 UTCJun 17, 20:05 UTC11h 45m
2026-06-16 ITY615 BOS → FCO Jun 16, 22:25 UTCJun 17, 05:40 UTC7h 15m
2026-06-16 ITY614 - Jun 16, 09:04 UTCJun 16, 17:35 UTC8h 30m
2026-06-15 ITY651 YYZ → FCO Jun 15, 21:20 UTCJun 16, 05:25 UTC8h 5m
2026-06-15 ITY650 - Jun 15, 09:25 UTCJun 15, 18:20 UTC8h 55m
2026-06-14 ITY603 JFK → FCO Jun 14, 22:00 UTCJun 15, 05:35 UTC7h 34m
2026-06-14 ITY602 - Jun 14, 08:00 UTCJun 14, 16:40 UTC8h 40m

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

Mode-S 4CADCA frequently asked

What is Mode-S code 4CADCA?
4CADCA is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-HJS.
Where is Mode-S 4CADCA registered?
Mode-S code 4CADCA is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CADCA broadcasting right now?
Yes. Mode-S 4CADCA is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CADCA, octal 23126712, decimal 5,025,226.
What flights does 4CADCA operate?
Mode-S 4CADCA has broadcast 20 distinct callsigns, including ITY6KC, ITY610, ITY770, ITY630, ITY769.