sensors Mode-S transponder

4CAF1E

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-TEC · AIRBUS A220-300

Hex
4CAF1E
Octal
23127436
Decimal
5,025,566
Country
IE
Tail
EI-TEC
Type
BCS3
No current signal · last broadcast 12h ago
Flights observed
16
Distinct callsigns
13
Country
IE
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 4CAF1E.

Country allocation

The ICAO 24-bit address 4CAF1E 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 13 distinct

Callsign Airline Flights Last seen
ITY720 ITA Airways 2 2026-04-14
ITY1619 - 2 2026-04-13
ITY1607 - 2 2026-04-13
ITY719 - 1 2026-04-14
ITY1712 - 1 2026-04-12
ITY1622 - 1 2026-04-13
ITY1606 - 1 2026-04-13
ITY1473 - 1 2026-04-13
ITY1460 - 1 2026-04-14
ITY1389 - 1 2026-04-12
ITY1380 - 1 2026-04-13
ITY1264 - 1 2026-04-13
ITY1263 ITA Airways 1 2026-04-13

Recent flights last 16

DateFlightRouteTakeoffLandingDuration
2026-04-14 ITY719 - Apr 14, 09:30 UTCApr 14, 11:05 UTC1h 35m
2026-04-14 ITY720 FCO → ATH Apr 14, 07:10 UTCApr 14, 08:20 UTC1h 10m
2026-04-14 ITY720 FCO → ATH Apr 14, 06:45 UTCApr 14, 07:10 UTC25m
2026-04-14 ITY1460 - Apr 14, 05:15 UTCApr 14, 05:25 UTC10m
2026-04-13 ITY1473 - Apr 13, 20:35 UTCApr 13, 21:15 UTC40m
2026-04-13 ITY1606 - Apr 13, 17:55 UTCApr 13, 18:45 UTC50m
2026-04-13 ITY1607 - Apr 13, 16:15 UTCApr 13, 16:45 UTC30m
2026-04-13 ITY1607 - Apr 13, 16:10 UTCApr 13, 16:45 UTC35m
2026-04-13 ITY1622 - Apr 13, 13:50 UTCApr 13, 14:45 UTC55m
2026-04-13 ITY1619 - Apr 13, 12:20 UTCApr 13, 12:40 UTC20m
2026-04-13 ITY1619 - Apr 13, 12:05 UTCApr 13, 12:15 UTC10m
2026-04-13 ITY1264 - Apr 13, 09:20 UTCApr 13, 09:50 UTC30m
2026-04-13 ITY1263 FCO → NAP Apr 13, 07:35 UTCApr 13, 08:00 UTC25m
2026-04-13 ITY1380 - Apr 13, 05:00 UTCApr 13, 05:45 UTC45m
2026-04-12 ITY1389 - Apr 12, 20:05 UTCApr 12, 20:15 UTC10m
2026-04-12 ITY1712 - Apr 12, 17:55 UTCApr 12, 18:50 UTC55m

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

Mode-S 4CAF1E frequently asked

What is Mode-S code 4CAF1E?
4CAF1E is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-TEC.
Where is Mode-S 4CAF1E registered?
Mode-S code 4CAF1E is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAF1E broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAF1E, octal 23127436, decimal 5,025,566.
What flights does 4CAF1E operate?
Mode-S 4CAF1E has broadcast 13 distinct callsigns, including ITY720, ITY1619, ITY1607, ITY719, ITY1712.