Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4CAD6D

ICAO 24-bit transponder address · allocated to Ireland

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

Hex
4CAD6D
Octal
23126555
Decimal
5,025,133
Country
IE
Tail
EI-HDH
Type
AT76
No current signal · last broadcast 19d ago
Flights observed
440
Distinct callsigns
20
Country
IE
Last broadcast
19d ago

Last known position

Most recent position reported by Mode-S 4CAD6D.

Country allocation

The ICAO 24-bit address 4CAD6D 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
EAI64B - 8 2026-07-17
EAI55SK Elite Air 8 2026-07-26
EAI54VJ Elite Air 8 2026-07-26
EAI48D Elite Air 8 2026-07-25
EAI43D - 8 2026-07-25
EAI42D Elite Air 8 2026-07-25
EAI41D Elite Air 8 2026-07-26
EAI2GL - 8 2026-07-16
EAI17N Elite Air 8 2026-07-25
EAI16M Elite Air 8 2026-07-25
EAI73N - 7 2026-07-17
EAI59L - 7 2026-07-16
EAI58Z Elite Air 7 2026-07-16
EAI53BS Elite Air 7 2026-07-16
EAI52NE - 7 2026-07-16
EAI51C Elite Air 7 2026-07-23
EAI50E - 7 2026-07-23
EAI37E - 7 2026-07-17
EAI31M Elite Air 7 2026-07-22
EAI95C Elite Air 6 2026-07-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EAI85Y BRS → BRS Jul 26, 14:30 UTCJul 26, 15:30 UTC1h 0m
2026-07-26 EAI84U DUB → BRS Jul 26, 12:35 UTCJul 26, 13:30 UTC55m
2026-07-26 EAI55SK EDI → DUB Jul 26, 10:35 UTCJul 26, 11:30 UTC55m
2026-07-26 EAI54VJ DUB → EDI Jul 26, 08:45 UTCJul 26, 09:40 UTC55m
2026-07-26 EAI41D CFN → DUB Jul 26, 07:05 UTCJul 26, 07:40 UTC35m
2026-07-25 EAI48D DUB → CFN Jul 25, 18:10 UTCJul 25, 18:50 UTC40m
2026-07-25 EAI17N IOM → DUB Jul 25, 17:00 UTCJul 25, 17:25 UTC25m
2026-07-25 EAI16M DUB → IOM Jul 25, 15:30 UTCJul 25, 16:00 UTC30m
2026-07-25 EAI43D - Jul 25, 14:05 UTCJul 25, 14:40 UTC35m
2026-07-25 EAI42D DUB → CFN Jul 25, 12:30 UTCJul 25, 13:10 UTC40m
2026-07-24 EAI32P MST → SOF Jul 24, 15:55 UTCJul 24, 17:00 UTC1h 5m
2026-07-23 EAI72N DUB → INV Jul 23, 13:35 UTCJul 23, 14:45 UTC1h 10m
2026-07-23 EAI23C GLA → DUB Jul 23, 11:40 UTCJul 23, 12:30 UTC50m
2026-07-23 EAI22M - Jul 23, 10:00 UTCJul 23, 10:50 UTC50m
2026-07-23 EAI51C EDI → DUB Jul 23, 08:00 UTCJul 23, 08:55 UTC55m
2026-07-23 EAI50E DUB → EDI Jul 23, 06:05 UTCJul 23, 07:05 UTC1h 0m
2026-07-22 EAI79BX - Jul 22, 18:50 UTCJul 22, 19:50 UTC1h 0m
2026-07-22 EAI78BX - Jul 22, 17:10 UTCJul 22, 18:05 UTC55m
2026-07-22 EAI39V LPL → DUB Jul 22, 12:20 UTCJul 22, 13:00 UTC40m
2026-07-22 EAI31M SOU → DUB Jul 22, 11:10 UTCJul 22, 11:40 UTC30m
2026-07-21 EAI3229 GLA → DUB Jul 21, 18:30 UTCJul 22, 05:25 UTC10h 55m
2026-07-21 EAI43S - Jul 21, 16:25 UTCJul 21, 18:20 UTC1h 55m
2026-07-21 EAI2DM GLA → DUB Jul 21, 13:05 UTCJul 21, 16:20 UTC3h 15m
2026-07-21 EAI26PK - Jul 21, 11:10 UTCJul 21, 12:05 UTC55m
2026-07-21 EAI34N ABZ → DUB Jul 21, 09:10 UTCJul 21, 10:20 UTC1h 10m
2026-07-21 EAI42A DUB → ABZ Jul 21, 07:05 UTCJul 21, 08:25 UTC1h 20m
2026-07-20 EAI3RG EDI → DUB Jul 20, 18:55 UTCJul 20, 19:50 UTC55m
2026-07-20 EAI35C DUB → EDI Jul 20, 17:10 UTCJul 20, 18:10 UTC1h 0m
2026-07-20 EAI25LG GLA → DUB Jul 20, 15:15 UTCJul 20, 16:50 UTC1h 35m
2026-07-20 EAI24CE DUB → GLA Jul 20, 13:35 UTCJul 20, 14:25 UTC50m
2026-07-20 EAI51C EDI → DUB Jul 20, 07:50 UTCJul 20, 08:50 UTC1h 0m
2026-07-20 EAI50E - Jul 20, 06:05 UTCJul 20, 07:05 UTC1h 0m
2026-07-19 EAI75B - Jul 19, 18:00 UTCJul 19, 19:00 UTC1h 0m
2026-07-19 EAI74G DUB → BHX Jul 19, 16:10 UTCJul 19, 17:05 UTC55m
2026-07-19 EAI85Y BRS → BRS Jul 19, 14:15 UTCJul 19, 15:20 UTC1h 5m
2026-07-19 EAI84U DUB → BRS Jul 19, 12:35 UTCJul 19, 13:30 UTC55m
2026-07-19 EAI55SK EDI → DUB Jul 19, 10:25 UTCJul 19, 11:20 UTC55m
2026-07-19 EAI54VJ DUB → EDI Jul 19, 08:35 UTCJul 19, 09:30 UTC55m
2026-07-19 EAI41D - Jul 19, 07:00 UTCJul 19, 07:40 UTC40m
2026-07-18 EAI48D DUB → CFN Jul 18, 18:00 UTCJul 18, 18:35 UTC35m
2026-07-18 EAI17N IOM → DUB Jul 18, 16:25 UTCJul 18, 17:00 UTC35m
2026-07-18 EAI16M DUB → IOM Jul 18, 15:15 UTCJul 18, 15:40 UTC25m
2026-07-18 EAI43D - Jul 18, 13:35 UTCJul 18, 14:10 UTC35m
2026-07-18 EAI42D DUB → CFN Jul 18, 12:05 UTCJul 18, 12:40 UTC35m
2026-07-18 EAI31F EDI → DUB Jul 18, 09:00 UTCJul 18, 10:00 UTC1h 0m
2026-07-18 EAI3HP DUB → EDI Jul 18, 07:05 UTCJul 18, 08:10 UTC1h 5m
2026-07-17 EAI65Y - Jul 17, 11:50 UTCJul 17, 12:50 UTC1h 0m
2026-07-17 EAI64B DUB → BHX Jul 17, 09:40 UTCJul 17, 10:40 UTC1h 0m
2026-07-17 EAI37E - Jul 17, 08:00 UTCJul 17, 08:59 UTC1h 0m
2026-07-17 EAI73N DUB → NCL Jul 17, 06:29 UTCJul 17, 07:25 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-HDH page for operator, model, and routing details .

Mode-S 4CAD6D frequently asked

What is Mode-S code 4CAD6D?
4CAD6D is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-HDH.
Where is Mode-S 4CAD6D registered?
Mode-S code 4CAD6D is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAD6D broadcasting right now?
No active broadcast right now. Last signal was 19d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAD6D, octal 23126555, decimal 5,025,133.
What flights does 4CAD6D operate?
Mode-S 4CAD6D has broadcast 20 distinct callsigns, including EAI64B, EAI55SK, EAI54VJ, EAI48D, EAI43D.