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sensors Mode-S transponder

4CAF0A

ICAO 24-bit transponder address · allocated to Ireland

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

Hex
4CAF0A
Octal
23127412
Decimal
5,025,546
Country
IE
Tail
EI-HPJ
Type
AT76
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
732
Distinct callsigns
20
Country
IE
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S 4CAF0A.

Country allocation

The ICAO 24-bit address 4CAF0A 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
EAI55YA - 14 2026-07-19
EAI4WD - 14 2026-07-19
EAI29GA Elite Air 14 2026-07-26
EAI8BR Elite Air 13 2026-07-20
EAI3HP Elite Air 13 2026-07-23
EAI8C Elite Air 12 2026-07-25
EAI81A - 12 2026-07-20
EAI59L - 12 2026-07-14
EAI31F - 12 2026-07-23
EAI28QB Elite Air 12 2026-06-27
EAI09U Elite Air 12 2026-07-25
EAI58Z Elite Air 11 2026-07-14
EAI55SK - 11 2026-07-24
EAI34N - 11 2026-07-16
EAI33CB - 11 2026-07-19
EAI32V - 11 2026-07-07
EAI2DM Elite Air 11 2026-07-26
EAI26PK Elite Air 11 2026-07-26
EAI17W - 11 2026-07-07
EAI91M - 10 2026-07-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EAI29GA GLA → DUB Jul 26, 22:10 UTCJul 26, 22:30 UTC20m
2026-07-26 EAI29GA GLA → DUB Jul 26, 21:15 UTCJul 26, 22:05 UTC50m
2026-07-26 EAI43S - Jul 26, 14:25 UTCJul 26, 20:30 UTC6h 5m
2026-07-26 EAI2DM GLA → DUB Jul 26, 13:30 UTCJul 26, 14:20 UTC50m
2026-07-26 EAI26PK DUB → GLA Jul 26, 11:45 UTCJul 26, 12:40 UTC55m
2026-07-26 EAI31M SOU → DUB Jul 26, 09:05 UTCJul 26, 10:30 UTC1h 25m
2026-07-26 EAI7S DUB → SOU Jul 26, 06:10 UTCJul 26, 07:20 UTC1h 11m
2026-07-25 EAI09U SOU → DUB Jul 25, 20:25 UTCJul 25, 23:50 UTC3h 25m
2026-07-25 EAI09U SOU → DUB Jul 25, 19:05 UTCJul 25, 20:20 UTC1h 15m
2026-07-25 EAI8C DUB → SOU Jul 25, 16:25 UTCJul 25, 19:00 UTC2h 35m
2026-07-25 EAI79D DUB → NCL Jul 25, 13:40 UTCJul 25, 16:20 UTC2h 40m
2026-07-25 EAI52NE DUB → EDI Jul 25, 10:00 UTCJul 25, 13:20 UTC3h 20m
2026-07-25 EAI21HA GLA → DUB Jul 25, 08:10 UTCJul 25, 09:50 UTC1h 40m
2026-07-25 EAI2GL DUB → GLA Jul 25, 06:10 UTCJul 25, 07:10 UTC1h 0m
2026-07-24 EAI75B BHX → DUB Jul 24, 18:10 UTCJul 24, 19:10 UTC1h 0m
2026-07-24 EAI74G DUB → BHX Jul 24, 16:20 UTCJul 24, 17:20 UTC1h 0m
2026-07-24 EAI85Y BRS → BRS Jul 24, 14:35 UTCJul 24, 15:30 UTC55m
2026-07-24 EAI84U DUB → BRS Jul 24, 12:25 UTCJul 24, 13:25 UTC1h 0m
2026-07-24 EAI55SK EDI → DUB Jul 24, 10:30 UTCJul 24, 11:20 UTC50m
2026-07-24 EAI54VJ DUB → EDI Jul 24, 08:40 UTCJul 24, 09:40 UTC1h 0m
2026-07-24 EAI41D CFN → DUB Jul 24, 07:15 UTCJul 24, 07:50 UTC35m
2026-07-23 EAI48D DUB → CFN Jul 23, 18:15 UTCJul 23, 18:50 UTC35m
2026-07-23 EAI17N IOM → DUB Jul 23, 17:00 UTCJul 23, 17:25 UTC25m
2026-07-23 EAI16M DUB → IOM Jul 23, 15:45 UTCJul 23, 16:10 UTC25m
2026-07-23 EAI43D - Jul 23, 13:55 UTCJul 23, 14:30 UTC35m
2026-07-23 EAI42D DUB → CFN Jul 23, 12:10 UTCJul 23, 12:50 UTC40m
2026-07-23 EAI31F EDI → DUB Jul 23, 09:30 UTCJul 23, 10:25 UTC55m
2026-07-23 EAI3HP DUB → EDI Jul 23, 07:35 UTCJul 23, 08:35 UTC1h 0m
2026-07-22 EAI75B - Jul 22, 17:50 UTCJul 22, 18:50 UTC1h 0m
2026-07-22 EAI74G DUB → BHX Jul 22, 16:10 UTCJul 22, 17:05 UTC55m
2026-07-22 EAI85Y BRS → BRS Jul 22, 14:20 UTCJul 22, 15:20 UTC1h 0m
2026-07-22 EAI84U DUB → BRS Jul 22, 12:25 UTCJul 22, 13:20 UTC55m
2026-07-22 EAI55SK - Jul 22, 11:10 UTCJul 22, 11:35 UTC25m
2026-07-21 EAI48D DUB → CFN Jul 21, 17:55 UTCJul 21, 18:30 UTC35m
2026-07-21 EAI17N IOM → DUB Jul 21, 16:20 UTCJul 21, 16:45 UTC25m
2026-07-21 EAI16M DUB → IOM Jul 21, 15:20 UTCJul 21, 15:50 UTC30m
2026-07-21 EAI43D - Jul 21, 13:20 UTCJul 21, 13:55 UTC35m
2026-07-21 EAI42D DUB → CFN Jul 21, 11:55 UTCJul 21, 12:35 UTC40m
2026-07-21 EAI31F EDI → DUB Jul 21, 09:20 UTCJul 21, 10:15 UTC55m
2026-07-21 EAI3HP DUB → EDI Jul 21, 07:25 UTCJul 21, 08:20 UTC55m
2026-07-20 EAI09U - Jul 20, 19:15 UTCJul 20, 20:30 UTC1h 15m
2026-07-20 EAI8C DUB → SOU Jul 20, 17:15 UTCJul 20, 18:35 UTC1h 20m
2026-07-20 EAI93D LBA → LBA Jul 20, 15:35 UTCJul 20, 16:30 UTC55m
2026-07-20 EAI92B DUB → LBA Jul 20, 13:40 UTCJul 20, 14:35 UTC55m
2026-07-20 EAI81A BRS → DUB Jul 20, 11:40 UTCJul 20, 12:35 UTC55m
2026-07-20 EAI4RA - Jul 20, 09:45 UTCJul 20, 10:50 UTC1h 5m
2026-07-20 EAI4LP BRS → ORK Jul 20, 07:45 UTCJul 20, 08:45 UTC1h 0m
2026-07-20 EAI8BR DUB → BRS Jul 20, 06:00 UTCJul 20, 06:50 UTC50m
2026-07-19 EAI11M - Jul 19, 20:20 UTCJul 19, 21:05 UTC45m
2026-07-19 EAI3BM - Jul 19, 18:35 UTCJul 19, 19:25 UTC50m

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

Mode-S 4CAF0A frequently asked

What is Mode-S code 4CAF0A?
4CAF0A is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-HPJ.
Where is Mode-S 4CAF0A registered?
Mode-S code 4CAF0A is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAF0A broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAF0A, octal 23127412, decimal 5,025,546.
What flights does 4CAF0A operate?
Mode-S 4CAF0A has broadcast 20 distinct callsigns, including EAI55YA, EAI4WD, EAI29GA, EAI8BR, EAI3HP.