sensors Mode-S transponder

4CAF1F

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-TED · AIRBUS A220-300

Hex
4CAF1F
Octal
23127437
Decimal
5,025,567
Country
IE
Tail
EI-TED
Type
BCS3
No current signal · last broadcast 13h ago
Flights observed
14
Distinct callsigns
11
Country
IE
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S 4CAF1F.

Country allocation

The ICAO 24-bit address 4CAF1F 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 11 distinct

Callsign Airline Flights Last seen
ITY305 - 2 2026-04-14
ITY1672 - 2 2026-04-13
ITY1671 - 2 2026-04-13
ITY351 - 1 2026-04-13
ITY350 ITA Airways 1 2026-04-13
ITY300 ITA Airways 1 2026-04-14
ITY2014 - 1 2026-04-13
ITY1780 - 1 2026-04-12
ITY1767 - 1 2026-04-12
ITY1702 - 1 2026-04-13
ITY1701 - 1 2026-04-13

Recent flights last 14

DateFlightRouteTakeoffLandingDuration
2026-04-14 ITY305 - Apr 14, 09:10 UTCApr 14, 10:05 UTC55m
2026-04-14 ITY305 - Apr 14, 08:55 UTCApr 14, 09:05 UTC10m
2026-04-14 ITY300 LIN → CDG Apr 14, 05:35 UTCApr 14, 06:45 UTC1h 10m
2026-04-13 ITY1702 - Apr 13, 19:45 UTCApr 13, 20:10 UTC25m
2026-04-13 ITY1701 - Apr 13, 17:05 UTCApr 13, 18:35 UTC1h 30m
2026-04-13 ITY1672 - Apr 13, 15:50 UTCApr 13, 16:05 UTC15m
2026-04-13 ITY1672 - Apr 13, 14:55 UTCApr 13, 16:05 UTC1h 10m
2026-04-13 ITY1671 - Apr 13, 12:20 UTCApr 13, 13:20 UTC1h 0m
2026-04-13 ITY1671 - Apr 13, 12:10 UTCApr 13, 12:15 UTC5m
2026-04-13 ITY351 ORY → LIN Apr 13, 09:05 UTCApr 13, 10:15 UTC1h 10m
2026-04-13 ITY350 LIN → ORY Apr 13, 06:45 UTCApr 13, 07:50 UTC1h 5m
2026-04-13 ITY2014 - Apr 13, 04:50 UTCApr 13, 05:35 UTC45m
2026-04-12 ITY1780 - Apr 12, 18:50 UTCApr 12, 19:35 UTC45m
2026-04-12 ITY1767 - Apr 12, 17:15 UTCApr 12, 17:40 UTC25m

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

Mode-S 4CAF1F frequently asked

What is Mode-S code 4CAF1F?
4CAF1F is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-TED.
Where is Mode-S 4CAF1F registered?
Mode-S code 4CAF1F is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAF1F broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAF1F, octal 23127437, decimal 5,025,567.
What flights does 4CAF1F operate?
Mode-S 4CAF1F has broadcast 11 distinct callsigns, including ITY305, ITY1672, ITY1671, ITY351, ITY350.