sensors Mode-S transponder

4CAEAD

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-HNA · ATR-72-600

Hex
4CAEAD
Octal
23127255
Decimal
5,025,453
Country
IE
Tail
EI-HNA
Type
AT76
No current signal · last broadcast 16h ago
Flights observed
13
Distinct callsigns
13
Country
IE
Last broadcast
16h ago

Last known position

Most recent position reported by Mode-S 4CAEAD.

Country allocation

The ICAO 24-bit address 4CAEAD 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
EAI52NE - 1 2026-04-14
EAI51C - 1 2026-04-14
EAI50 - 1 2026-04-14
EAI43S - 1 2026-04-13
EAI42A Elite Air 1 2026-04-13
EAI38JL - 1 2026-04-13
EAI36W Elite Air 1 2026-04-12
EAI34N - 1 2026-04-13
EAI2DM - 1 2026-04-13
EAI2A - 1 2026-04-12
EAI29GA - 1 2026-04-13
EAI28QB - 1 2026-04-13
EAI26PK - 1 2026-04-13

Recent flights last 13

DateFlightRouteTakeoffLandingDuration
2026-04-14 EAI52NE - Apr 14, 09:30 UTCApr 14, 10:20 UTC50m
2026-04-14 EAI51C - Apr 14, 07:40 UTCApr 14, 08:40 UTC1h 0m
2026-04-14 EAI50 DUB → EDI Apr 14, 06:05 UTCApr 14, 06:55 UTC50m
2026-04-13 EAI29GA - Apr 13, 20:30 UTCApr 13, 21:15 UTC45m
2026-04-13 EAI38JL ORK → GLA Apr 13, 18:20 UTCApr 13, 19:35 UTC1h 15m
2026-04-13 EAI43S GLA → ORK Apr 13, 16:20 UTCApr 13, 17:35 UTC1h 15m
2026-04-13 EAI28QB DUB → GLA Apr 13, 14:45 UTCApr 13, 15:35 UTC50m
2026-04-13 EAI2DM GLA → DUB Apr 13, 12:25 UTCApr 13, 13:20 UTC55m
2026-04-13 EAI26PK DUB → GLA Apr 13, 10:45 UTCApr 13, 11:35 UTC50m
2026-04-13 EAI34N ABZ → DUB Apr 13, 08:45 UTCApr 13, 10:05 UTC1h 20m
2026-04-13 EAI42A DUB → ABZ Apr 13, 06:40 UTCApr 13, 07:45 UTC1h 5m
2026-04-12 EAI36W DUB → LPL Apr 12, 18:40 UTCApr 12, 19:20 UTC40m
2026-04-12 EAI2A - Apr 12, 17:15 UTCApr 12, 17:35 UTC20m

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

Mode-S 4CAEAD frequently asked

What is Mode-S code 4CAEAD?
4CAEAD is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-HNA.
Where is Mode-S 4CAEAD registered?
Mode-S code 4CAEAD is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAEAD broadcasting right now?
No active broadcast right now. Last signal was 16h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAEAD, octal 23127255, decimal 5,025,453.
What flights does 4CAEAD operate?
Mode-S 4CAEAD has broadcast 13 distinct callsigns, including EAI52NE, EAI51C, EAI50, EAI43S, EAI42A.