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sensors Mode-S transponder

4CAF1C

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-TEA · AIRBUS A220-300

Hex
4CAF1C
Octal
23127434
Decimal
5,025,564
Country
IE
Tail
EI-TEA
Type
BCS3
No current signal · last broadcast 1h ago
Flights observed
592
Distinct callsigns
20
Country
IE
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 4CAF1C.

Country allocation

The ICAO 24-bit address 4CAF1C 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
ITY571 - 9 2026-07-07
ITY1702 - 9 2026-07-03
ITY1701 - 9 2026-07-03
ITY572 - 8 2026-07-07
ITY436 - 8 2026-07-13
ITY433 ITA Airways 8 2026-07-13
ITY1391 ITA Airways 7 2026-07-06
ITY1389 - 7 2026-07-05
ITY1380 - 7 2026-07-06
ITY6BO - 6 2026-07-12
ITY1739 - 6 2026-07-13
ITY1730 - 6 2026-07-13
ITY1719 - 6 2026-07-09
ITY1625 - 6 2026-07-08
ITY1620 - 6 2026-07-09
ITY1603 - 6 2026-07-11
ITY1392 ITA Airways 6 2026-07-06
ITY345 - 5 2026-07-12
ITY344 - 5 2026-07-12
ITY1782 - 5 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ITY1358 - Jul 14, 09:45 UTCJul 14, 10:30 UTC45m
2026-07-14 ITY1357 - Jul 14, 08:05 UTCJul 14, 08:50 UTC45m
2026-07-14 ITY317 - Jul 14, 04:45 UTCJul 14, 06:20 UTC1h 35m
2026-07-13 ITY332 - Jul 13, 20:00 UTCJul 13, 21:45 UTC1h 45m
2026-07-13 ITY433 MUC → FCO Jul 13, 17:35 UTCJul 13, 18:40 UTC1h 5m
2026-07-13 ITY436 - Jul 13, 15:05 UTCJul 13, 16:10 UTC1h 5m
2026-07-13 ITY1730 - Jul 13, 12:50 UTCJul 13, 13:50 UTC1h 0m
2026-07-13 ITY1739 - Jul 13, 10:45 UTCJul 13, 11:25 UTC40m
2026-07-13 ITY1782 - Jul 13, 08:40 UTCJul 13, 09:25 UTC45m
2026-07-13 ITY1777 - Jul 13, 06:35 UTCJul 13, 07:10 UTC35m
2026-07-12 ITY087 IBZ → FCO Jul 12, 19:01 UTCJul 12, 20:25 UTC1h 25m
2026-07-12 ITY086 FCO → IBZ Jul 12, 16:20 UTCJul 12, 17:55 UTC1h 35m
2026-07-12 ITY345 - Jul 12, 14:20 UTCJul 12, 15:10 UTC50m
2026-07-12 ITY344 - Jul 12, 11:50 UTCJul 12, 12:40 UTC50m
2026-07-12 ITY437 - Jul 12, 09:15 UTCJul 12, 10:20 UTC1h 5m
2026-07-12 ITY432 - Jul 12, 06:50 UTCJul 12, 08:01 UTC1h 10m
2026-07-12 ITY6BO - Jul 12, 04:30 UTCJul 12, 05:20 UTC50m
2026-07-11 ITY1603 - Jul 11, 20:55 UTCJul 11, 21:35 UTC40m
2026-07-11 ITY1BC BDS → FCO Jul 11, 17:50 UTCJul 11, 18:45 UTC55m
2026-07-11 ITY1623 FCO → BDS Jul 11, 16:05 UTCJul 11, 16:50 UTC45m
2026-07-11 ITY1616 - Jul 11, 14:15 UTCJul 11, 14:50 UTC35m
2026-07-11 ITY1613 - Jul 11, 12:15 UTCJul 11, 12:55 UTC40m
2026-07-11 ITY2045 - Jul 11, 09:55 UTCJul 11, 10:45 UTC50m
2026-07-11 ITY1642 BDS → LIN Jul 11, 07:20 UTCJul 11, 08:35 UTC1h 15m
2026-07-11 ITY1629 LIN → BDS Jul 11, 04:50 UTCJul 11, 06:15 UTC1h 25m
2026-07-10 ITY1790 - Jul 10, 18:45 UTCJul 10, 19:55 UTC1h 10m
2026-07-10 ITY1793 - Jul 10, 16:35 UTCJul 10, 17:45 UTC1h 10m
2026-07-10 ITY1786 - Jul 10, 13:55 UTCJul 10, 15:20 UTC1h 25m
2026-07-10 ITY1787 - Jul 10, 11:25 UTCJul 10, 12:35 UTC1h 10m
2026-07-10 ITY2036 - Jul 10, 09:20 UTCJul 10, 10:10 UTC50m
2026-07-10 ITY1728 - Jul 10, 06:10 UTCJul 10, 07:10 UTC1h 0m
2026-07-09 ITY1719 - Jul 9, 19:55 UTCJul 9, 20:45 UTC50m
2026-07-09 ITY433 MUC → FCO Jul 9, 17:30 UTCJul 9, 18:30 UTC1h 0m
2026-07-09 ITY436 - Jul 9, 15:00 UTCJul 9, 16:15 UTC1h 15m
2026-07-09 ITY159 - Jul 9, 09:50 UTCJul 9, 11:30 UTC1h 40m
2026-07-09 ITY156 - Jul 9, 06:55 UTCJul 9, 08:40 UTC1h 45m
2026-07-09 ITY1620 - Jul 9, 04:20 UTCJul 9, 05:10 UTC50m
2026-07-08 ITY1625 FCO → BDS Jul 8, 20:10 UTCJul 8, 21:00 UTC50m
2026-07-08 ITY1712 - Jul 8, 17:45 UTCJul 8, 18:40 UTC55m
2026-07-08 ITY1733 - Jul 8, 15:35 UTCJul 8, 16:20 UTC45m
2026-07-08 ITY1462 - Jul 8, 13:30 UTCJul 8, 14:20 UTC50m
2026-07-08 ITY1475 - Jul 8, 11:40 UTCJul 8, 12:20 UTC40m
2026-07-08 ITY887 - Jul 8, 08:50 UTCJul 8, 10:05 UTC1h 15m
2026-07-08 ITY886 - Jul 8, 06:45 UTCJul 8, 07:45 UTC1h 0m
2026-07-08 ITY6BO - Jul 8, 04:45 UTCJul 8, 05:30 UTC45m
2026-07-07 ITY1603 - Jul 7, 20:10 UTCJul 7, 20:55 UTC45m
2026-07-07 ITY079 BCN → FCO Jul 7, 15:20 UTCJul 7, 16:40 UTC1h 20m
2026-07-07 ITY076 FCO → BCN Jul 7, 12:40 UTCJul 7, 14:00 UTC1h 20m
2026-07-07 ITY571 - Jul 7, 09:10 UTCJul 7, 10:15 UTC1h 5m
2026-07-07 ITY572 - Jul 7, 06:55 UTCJul 7, 08:05 UTC1h 10m

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

Mode-S 4CAF1C frequently asked

What is Mode-S code 4CAF1C?
4CAF1C is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-TEA.
Where is Mode-S 4CAF1C registered?
Mode-S code 4CAF1C is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAF1C 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 4CAF1C, octal 23127434, decimal 5,025,564.
What flights does 4CAF1C operate?
Mode-S 4CAF1C has broadcast 20 distinct callsigns, including ITY571, ITY1702, ITY1701, ITY572, ITY436.