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sensors Mode-S transponder

4CAD57

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-HHM · AIRBUS A220-300

Hex
4CAD57
Octal
23126527
Decimal
5,025,111
Country
IE
Tail
EI-HHM
Type
BCS3
No current signal · last broadcast Jul 26, 21:25 UTC
Flights observed
596
Distinct callsigns
20
Country
IE
Last broadcast
Jul 26, 21:25 UTC

Last known position

Most recent position reported by Mode-S 4CAD57.

Country allocation

The ICAO 24-bit address 4CAD57 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
ITY1625 ITA Airways 10 2026-07-25
ITY1620 ITA Airways 10 2026-07-26
ITY1739 - 9 2026-07-02
ITY1730 ITA Airways 9 2026-07-02
ITY403 - 7 2026-07-22
ITY400 ITA Airways 7 2026-07-19
ITY576 - 6 2026-06-30
ITY575 - 6 2026-06-30
ITY348 ITA Airways 6 2026-07-24
ITY345 - 6 2026-07-05
ITY344 - 6 2026-07-05
ITY343 ITA Airways 6 2026-07-24
ITY1793 ITA Airways 6 2026-06-17
ITY1790 - 6 2026-06-17
ITY720 ITA Airways 5 2026-07-23
ITY719 ITA Airways 5 2026-07-23
ITY6BO - 5 2026-06-27
ITY578 ITA Airways 5 2026-05-17
ITY577 ITA Airways 5 2026-05-17
ITY2055 ITA Airways 5 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ITY9003 LGG → BLO Jul 26, 20:20 UTCJul 26, 21:25 UTC1h 5m
2026-07-26 ITY9924 LAX → LAS Jul 26, 18:05 UTCJul 26, 19:25 UTC1h 20m
2026-07-26 ITY1792 - Jul 26, 15:45 UTCJul 26, 16:30 UTC45m
2026-07-26 ITY1781 FCO → PMO Jul 26, 13:45 UTCJul 26, 14:25 UTC40m
2026-07-26 ITY1466 VCE → FCO Jul 26, 10:55 UTCJul 26, 11:50 UTC55m
2026-07-26 ITY1463 FCO → VCE Jul 26, 08:40 UTCJul 26, 09:25 UTC45m
2026-07-26 ITY1620 BDS → FCO Jul 26, 04:35 UTCJul 26, 05:35 UTC1h 0m
2026-07-25 ITY1625 FCO → BDS Jul 25, 21:30 UTCJul 25, 22:15 UTC45m
2026-07-25 ITY711 FCO → EFL Jul 25, 19:05 UTCJul 25, 20:20 UTC1h 15m
2026-07-25 ITY710 EFL → FCO Jul 25, 16:55 UTCJul 25, 18:10 UTC1h 15m
2026-07-25 ITY727 - Jul 25, 12:40 UTCJul 25, 14:55 UTC2h 15m
2026-07-25 ITY726 FCO → RHO Jul 25, 09:35 UTCJul 25, 11:35 UTC2h 0m
2026-07-25 ITY1728 CTA → FCO Jul 25, 06:25 UTCJul 25, 07:20 UTC55m
2026-07-24 ITY1719 - Jul 24, 20:25 UTCJul 24, 21:10 UTC45m
2026-07-24 ITY089 - Jul 24, 16:35 UTCJul 24, 17:50 UTC1h 15m
2026-07-24 ITY088 PMI → FCO Jul 24, 13:50 UTCJul 24, 15:05 UTC1h 15m
2026-07-24 ITY343 NCE → FCO Jul 24, 10:40 UTCJul 24, 11:30 UTC50m
2026-07-24 ITY348 FCO → NCE Jul 24, 08:40 UTCJul 24, 09:30 UTC50m
2026-07-24 ITY1620 BDS → FCO Jul 24, 04:30 UTCJul 24, 05:25 UTC55m
2026-07-23 ITY1625 - Jul 23, 20:35 UTCJul 23, 21:15 UTC40m
2026-07-23 ITY109 AMS → FCO Jul 23, 16:45 UTCJul 23, 18:20 UTC1h 35m
2026-07-23 ITY110 FCO → AMS Jul 23, 13:30 UTCJul 23, 15:30 UTC2h 0m
2026-07-23 ITY719 ATH → FCO Jul 23, 10:05 UTCJul 23, 11:50 UTC1h 45m
2026-07-23 ITY720 FCO → ATH Jul 23, 07:20 UTCJul 23, 08:50 UTC1h 30m
2026-07-22 ITY1274 - Jul 22, 18:10 UTCJul 22, 18:40 UTC30m
2026-07-22 ITY1271 - Jul 22, 16:35 UTCJul 22, 17:00 UTC25m
2026-07-22 ITY403 - Jul 22, 11:10 UTCJul 22, 11:20 UTC10m
2026-07-22 ITY1380 GOA → FCO Jul 22, 04:55 UTCJul 22, 05:25 UTC30m
2026-07-21 ITY1389 FCO → GOA Jul 21, 21:00 UTCJul 21, 21:45 UTC45m
2026-07-21 ITY1364 - Jul 21, 17:30 UTCJul 21, 18:35 UTC1h 5m
2026-07-21 ITY1359 - Jul 21, 15:35 UTCJul 21, 16:30 UTC55m
2026-07-21 ITY1386 - Jul 21, 13:30 UTCJul 21, 14:10 UTC40m
2026-07-21 ITY1395 - Jul 21, 12:00 UTCJul 21, 12:40 UTC40m
2026-07-21 ITY437 - Jul 21, 09:30 UTCJul 21, 10:35 UTC1h 5m
2026-07-21 ITY432 FCO → MUC Jul 21, 07:00 UTCJul 21, 08:15 UTC1h 15m
2026-07-19 ITY1780 - Jul 19, 19:50 UTCJul 19, 20:40 UTC50m
2026-07-19 ITY1767 FCO → PMO Jul 19, 18:00 UTCJul 19, 18:35 UTC35m
2026-07-19 ITY1754 CTA → FCO Jul 19, 15:55 UTCJul 19, 16:50 UTC55m
2026-07-19 ITY7CA - Jul 19, 13:35 UTCJul 19, 14:25 UTC50m
2026-07-19 ITY403 - Jul 19, 10:20 UTCJul 19, 11:40 UTC1h 20m
2026-07-19 ITY400 FCO → FRA Jul 19, 07:10 UTCJul 19, 08:40 UTC1h 30m
2026-07-19 ITY1620 - Jul 19, 04:20 UTCJul 19, 05:15 UTC55m
2026-07-18 ITY1625 FCO → BDS Jul 18, 20:30 UTCJul 18, 21:20 UTC50m
2026-07-18 ITY711 - Jul 18, 17:35 UTCJul 18, 18:55 UTC1h 20m
2026-07-18 ITY710 - Jul 18, 15:25 UTCJul 18, 16:35 UTC1h 10m
2026-07-18 ITY1766 - Jul 18, 13:15 UTCJul 18, 14:05 UTC50m
2026-07-18 ITY1799 - Jul 18, 11:15 UTCJul 18, 11:55 UTC40m
2026-07-18 ITY1710 - Jul 18, 08:55 UTCJul 18, 09:55 UTC1h 0m
2026-07-18 ITY1709 FCO → CTA Jul 18, 06:45 UTCJul 18, 07:35 UTC50m
2026-07-17 ITY1780 - Jul 17, 20:04 UTCJul 17, 20:44 UTC40m

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

Mode-S 4CAD57 frequently asked

What is Mode-S code 4CAD57?
4CAD57 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-HHM.
Where is Mode-S 4CAD57 registered?
Mode-S code 4CAD57 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAD57 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAD57, octal 23126527, decimal 5,025,111.
What flights does 4CAD57 operate?
Mode-S 4CAD57 has broadcast 20 distinct callsigns, including ITY1625, ITY1620, ITY1739, ITY1730, ITY403.