sensors Mode-S transponder

4CAE29

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-XLR · AIRBUS A-321neo

Hex
4CAE29
Octal
23127051
Decimal
5,025,321
Country
IE
Tail
EI-XLR
Type
A21N
Broadcasting now · callsign EIN139 · 31,675 ft
Flights observed
11
Distinct callsigns
7
Country
IE
Last broadcast
14h ago

Current position

4CAE29 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4CAE29 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 7 distinct

Callsign Airline Flights Last seen
EIN3KM Aer Lingus 3 2026-04-13
EIN9WM - 2 2026-04-14
EIN9KN - 2 2026-04-13
EIN60T - 1 2026-04-14
EIN3GM - 1 2026-04-13
EIN13K - 1 2026-04-13
EIN13J - 1 2026-04-12

Recent flights last 11

DateFlightRouteTakeoffLandingDuration
2026-04-14 EIN60T - Apr 14, 09:20 UTCApr 14, 10:20 UTC1h 0m
2026-04-14 EIN9WM - Apr 14, 07:10 UTCApr 14, 07:20 UTC10m
2026-04-14 EIN9WM - Apr 14, 06:45 UTCApr 14, 07:10 UTC25m
2026-04-13 EIN9KN - Apr 13, 19:50 UTCApr 13, 22:50 UTC3h 0m
2026-04-13 EIN9KN - Apr 13, 14:40 UTCApr 13, 15:30 UTC50m
2026-04-13 EIN3GM MUC → DUB Apr 13, 09:50 UTCApr 13, 11:45 UTC1h 55m
2026-04-13 EIN3KM DUB → MUC Apr 13, 08:20 UTCApr 13, 08:45 UTC25m
2026-04-13 EIN3KM DUB → MUC Apr 13, 07:55 UTCApr 13, 08:45 UTC50m
2026-04-13 EIN3KM DUB → MUC Apr 13, 06:40 UTCApr 13, 08:15 UTC1h 35m
2026-04-13 EIN13K - Apr 13, 02:15 UTCApr 13, 03:05 UTC50m
2026-04-12 EIN13J - Apr 12, 17:25 UTCApr 12, 18:50 UTC1h 25m

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

Mode-S 4CAE29 frequently asked

What is Mode-S code 4CAE29?
4CAE29 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-XLR.
Where is Mode-S 4CAE29 registered?
Mode-S code 4CAE29 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAE29 broadcasting right now?
Yes. Mode-S 4CAE29 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAE29, octal 23127051, decimal 5,025,321.
What flights does 4CAE29 operate?
Mode-S 4CAE29 has broadcast 7 distinct callsigns, including EIN3KM, EIN9WM, EIN9KN, EIN60T, EIN3GM.