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sensors Mode-S transponder

4CA900

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-EID · AIRBUS A-320

Hex
4CA900
Octal
23124400
Decimal
5,024,000
Country
IE
Tail
EI-EID
Type
A320
No current signal · last broadcast Jul 26, 22:00 UTC
Flights observed
64
Distinct callsigns
20
Country
IE
Last broadcast
Jul 26, 22:00 UTC

Last known position

Most recent position reported by Mode-S 4CA900.

Country allocation

The ICAO 24-bit address 4CA900 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
ITY862 ITA Airways 2 2026-07-22
ITY861 ITA Airways 2 2026-07-23
ITY803 ITA Airways 2 2026-07-26
ITY802 ITA Airways 2 2026-07-25
ITY1733 ITA Airways 2 2026-07-24
ITY1712 ITA Airways 2 2026-07-24
ITY1431 ITA Airways 2 2026-07-26
ITY9743 ITA Airways 1 2026-07-22
ITY9742 - 1 2026-07-22
ITY867 - 1 2026-07-22
ITY866 ITA Airways 1 2026-07-22
ITY8022 ITA Airways 1 2026-07-17
ITY716 ITA Airways 1 2026-07-26
ITY715 ITA Airways 1 2026-07-26
ITY6BO - 1 2026-07-18
ITY572 ITA Airways 1 2026-07-19
ITY571 ITA Airways 1 2026-07-19
ITY510 - 1 2026-07-18
ITY507 - 1 2026-07-19
ITY436 ITA Airways 1 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ITY1431 FCO → TRN Jul 26, 21:10 UTCJul 26, 21:55 UTC45m
2026-07-26 ITY1628 BDS → FCO Jul 26, 16:35 UTCJul 26, 17:30 UTC55m
2026-07-26 ITY1627 FCO → BDS Jul 26, 14:40 UTCJul 26, 15:15 UTC35m
2026-07-26 ITY715 ATH → FCO Jul 26, 11:25 UTCJul 26, 13:10 UTC1h 45m
2026-07-26 ITY716 FCO → ATH Jul 26, 08:15 UTCJul 26, 09:45 UTC1h 30m
2026-07-26 ITY803 ALG → FCO Jul 26, 03:40 UTCJul 26, 04:45 UTC1h 5m
2026-07-25 ITY802 FCO → ALG Jul 25, 20:50 UTCJul 25, 22:10 UTC1h 20m
2026-07-25 ITY1364 TRS → FCO Jul 25, 18:15 UTCJul 25, 18:55 UTC40m
2026-07-25 ITY1359 FCO → TRS Jul 25, 16:30 UTCJul 25, 17:15 UTC45m
2026-07-25 ITY2071 - Jul 25, 14:20 UTCJul 25, 15:05 UTC45m
2026-07-25 ITY2044 - Jul 25, 12:25 UTCJul 25, 13:10 UTC45m
2026-07-25 ITY1432 TRN → FCO Jul 25, 05:00 UTCJul 25, 05:55 UTC55m
2026-07-24 ITY1431 FCO → TRN Jul 24, 22:00 UTCJul 24, 22:50 UTC50m
2026-07-24 ITY1712 CTA → FCO Jul 24, 19:35 UTCJul 24, 20:25 UTC50m
2026-07-24 ITY1733 FCO → CTA Jul 24, 17:50 UTCJul 24, 18:30 UTC40m
2026-07-24 ITY2061 LIN → FCO Jul 24, 15:15 UTCJul 24, 16:10 UTC55m
2026-07-24 ITY427 HAM → LIN Jul 24, 12:40 UTCJul 24, 13:55 UTC1h 15m
2026-07-24 ITY426 LIN → HAM Jul 24, 10:10 UTCJul 24, 11:30 UTC1h 20m
2026-07-24 ITY2028 FCO → LIN Jul 24, 07:30 UTCJul 24, 08:25 UTC55m
2026-07-24 ITY803 ALG → FCO Jul 24, 03:55 UTCJul 24, 05:10 UTC1h 15m
2026-07-23 ITY802 FCO → ALG Jul 23, 20:55 UTCJul 23, 22:15 UTC1h 20m
2026-07-23 ITY1734 - Jul 23, 17:20 UTCJul 23, 18:20 UTC1h 0m
2026-07-23 ITY1711 - Jul 23, 15:20 UTCJul 23, 16:00 UTC40m
2026-07-23 ITY077 BCN → FCO Jul 23, 11:00 UTCJul 23, 12:15 UTC1h 15m
2026-07-23 ITY074 FCO → BCN Jul 23, 08:20 UTCJul 23, 09:50 UTC1h 30m
2026-07-23 ITY861 TUN → FCO Jul 23, 04:35 UTCJul 23, 05:25 UTC50m
2026-07-22 ITY862 FCO → TUN Jul 22, 20:35 UTCJul 22, 21:10 UTC35m
2026-07-22 ITY867 - Jul 22, 18:00 UTCJul 22, 18:40 UTC40m
2026-07-22 ITY866 FCO → TUN Jul 22, 16:05 UTCJul 22, 16:50 UTC45m
2026-07-22 ITY9743 HAM → FCO Jul 22, 12:55 UTCJul 22, 14:40 UTC1h 45m
2026-07-22 ITY9742 - Jul 22, 11:15 UTCJul 22, 11:50 UTC35m
2026-07-22 ITY1162 SUF → FCO Jul 22, 04:20 UTCJul 22, 05:15 UTC55m
2026-07-21 ITY1173 - Jul 21, 20:55 UTCJul 21, 21:35 UTC40m
2026-07-21 ITY433 MUC → FCO Jul 21, 18:30 UTCJul 21, 19:30 UTC1h 0m
2026-07-21 ITY436 FCO → MUC Jul 21, 15:50 UTCJul 21, 17:10 UTC1h 20m
2026-07-21 ITY1766 - Jul 21, 13:20 UTCJul 21, 14:10 UTC50m
2026-07-21 ITY1799 - Jul 21, 11:10 UTCJul 21, 11:45 UTC35m
2026-07-21 ITY1710 - Jul 21, 08:50 UTCJul 21, 09:45 UTC55m
2026-07-21 ITY1709 FCO → CTA Jul 21, 06:40 UTCJul 21, 07:25 UTC45m
2026-07-21 ITY1PR - Jul 21, 04:50 UTCJul 21, 05:15 UTC25m
2026-07-20 ITY1267 FCO → NAP Jul 20, 20:45 UTCJul 20, 21:05 UTC20m
2026-07-20 ITY1608 BRI → FCO Jul 20, 15:50 UTCJul 20, 16:35 UTC45m
2026-07-20 ITY1609 - Jul 20, 14:25 UTCJul 20, 15:00 UTC35m
2026-07-20 ITY343 - Jul 20, 09:55 UTCJul 20, 10:45 UTC50m
2026-07-20 ITY348 FCO → NCE Jul 20, 07:35 UTCJul 20, 08:30 UTC55m
2026-07-20 ITY861 - Jul 20, 04:25 UTCJul 20, 05:15 UTC50m
2026-07-19 ITY862 FCO → TUN Jul 19, 21:20 UTCJul 19, 21:55 UTC35m
2026-07-19 ITY337 - Jul 19, 18:45 UTCJul 19, 19:35 UTC50m
2026-07-19 ITY336 - Jul 19, 16:30 UTCJul 19, 17:25 UTC55m
2026-07-19 ITY1178 SUF → FCO Jul 19, 13:40 UTCJul 19, 14:30 UTC50m

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

Mode-S 4CA900 frequently asked

What is Mode-S code 4CA900?
4CA900 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-EID.
Where is Mode-S 4CA900 registered?
Mode-S code 4CA900 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CA900 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CA900, octal 23124400, decimal 5,024,000.
What flights does 4CA900 operate?
Mode-S 4CA900 has broadcast 20 distinct callsigns, including ITY862, ITY861, ITY803, ITY802, ITY1733.