Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4CAF0B

ICAO 24-bit transponder address · allocated to Ireland

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

Hex
4CAF0B
Octal
23127413
Decimal
5,025,547
Country
IE
Tail
EI-HPK
Type
AT76
Transponder active on ground
Flights observed
505
Distinct callsigns
20
Country
IE
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 4CAF0B.

Country allocation

The ICAO 24-bit address 4CAF0B 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
EAI41D - 15 2026-07-09
EAI16M Elite Air 15 2026-07-08
EAI48D Elite Air 14 2026-07-08
EAI42D Elite Air 14 2026-07-08
EAI17N Elite Air 14 2026-07-08
EAI54VJ - 13 2026-07-09
EAI55SK - 12 2026-07-09
EAI43D - 12 2026-07-08
EAI75B - 10 2026-07-09
EAI74G Elite Air 10 2026-07-09
EAI31M - 10 2026-07-10
EAI85Y Elite Air 9 2026-07-09
EAI84U Elite Air 9 2026-07-09
EAI7S - 9 2026-07-10
EAI39V Elite Air 9 2026-06-25
EAI19L - 9 2026-06-25
EAI3BM - 8 2026-07-12
EAI2DM Elite Air 8 2026-07-10
EAI26PK - 8 2026-07-10
EAI23C Elite Air 8 2026-05-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 EAI3HP DUB → EDI Jul 14, 07:10 UTCJul 14, 08:15 UTC1h 5m
2026-07-13 EAI09U - Jul 13, 19:30 UTCJul 13, 20:45 UTC1h 15m
2026-07-13 EAI8C DUB → SOU Jul 13, 17:30 UTCJul 13, 18:50 UTC1h 20m
2026-07-13 EAI93D LBA → LBA Jul 13, 15:45 UTCJul 13, 16:35 UTC50m
2026-07-13 EAI92B DUB → LBA Jul 13, 14:05 UTCJul 13, 14:55 UTC50m
2026-07-13 EAI53BS EDI → DUB Jul 13, 11:45 UTCJul 13, 12:55 UTC1h 10m
2026-07-13 EAI52NE DUB → EDI Jul 13, 09:45 UTCJul 13, 10:45 UTC1h 0m
2026-07-13 EAI51C - Jul 13, 07:40 UTCJul 13, 08:45 UTC1h 5m
2026-07-13 EAI50E DUB → EDI Jul 13, 06:01 UTCJul 13, 06:55 UTC55m
2026-07-12 EAI11M MAN → DUB Jul 12, 20:20 UTCJul 12, 21:05 UTC45m
2026-07-12 EAI3BM - Jul 12, 18:40 UTCJul 12, 19:25 UTC45m
2026-07-12 EAI19MS MAN → DUB Jul 12, 17:05 UTCJul 12, 17:55 UTC50m
2026-07-12 EAI33CB DUB → MAN Jul 12, 15:20 UTCJul 12, 16:05 UTC45m
2026-07-12 EAI55YA EDI → DUB Jul 12, 13:01 UTCJul 12, 14:20 UTC1h 20m
2026-07-12 EAI4WD - Jul 12, 11:05 UTCJul 12, 12:20 UTC1h 15m
2026-07-12 EAI23GA GLA → DUB Jul 12, 08:50 UTCJul 12, 09:50 UTC1h 0m
2026-07-12 EAI25G DUB → GLA Jul 12, 07:05 UTCJul 12, 07:50 UTC45m
2026-07-11 EAI78R - Jul 11, 19:10 UTCJul 11, 20:30 UTC1h 20m
2026-07-11 EAI61L DUB → JER Jul 11, 17:15 UTCJul 11, 18:35 UTC1h 20m
2026-07-11 EAI57K EDI → DUB Jul 11, 15:20 UTCJul 11, 16:25 UTC1h 5m
2026-07-11 EAI6RC DUB → GLA Jul 11, 13:35 UTCJul 11, 14:30 UTC55m
2026-07-11 EAI81A - Jul 11, 11:25 UTCJul 11, 12:20 UTC55m
2026-07-11 EAI4RA ORK → BRS Jul 11, 09:30 UTCJul 11, 10:35 UTC1h 5m
2026-07-11 EAI84LP BRS → ORK Jul 11, 07:35 UTCJul 11, 08:35 UTC1h 0m
2026-07-11 EAI8BR DUB → BRS Jul 11, 05:50 UTCJul 11, 06:40 UTC50m
2026-07-10 EAI11M MAN → DUB Jul 10, 19:50 UTCJul 10, 20:45 UTC55m
2026-07-10 EAI3BM DUB → MAN Jul 10, 18:20 UTCJul 10, 19:10 UTC50m
2026-07-10 EAI71G NQY → DUB Jul 10, 16:25 UTCJul 10, 17:20 UTC55m
2026-07-10 EAI62N - Jul 10, 14:55 UTCJul 10, 15:45 UTC50m
2026-07-10 EAI2DM GLA → DUB Jul 10, 12:35 UTCJul 10, 13:40 UTC1h 5m
2026-07-10 EAI26PK DUB → GLA Jul 10, 11:05 UTCJul 10, 11:50 UTC45m
2026-07-10 EAI31M SOU → DUB Jul 10, 08:35 UTCJul 10, 10:00 UTC1h 25m
2026-07-10 EAI7S - Jul 10, 06:20 UTCJul 10, 07:35 UTC1h 15m
2026-07-09 EAI75B - Jul 9, 18:40 UTCJul 9, 19:40 UTC1h 0m
2026-07-09 EAI74G DUB → BHX Jul 9, 16:55 UTCJul 9, 17:55 UTC1h 0m
2026-07-09 EAI85Y BRS → BRS Jul 9, 15:05 UTCJul 9, 16:10 UTC1h 5m
2026-07-09 EAI84U DUB → BRS Jul 9, 13:15 UTCJul 9, 14:15 UTC1h 0m
2026-07-09 EAI55SK EDI → DUB Jul 9, 10:30 UTCJul 9, 11:30 UTC1h 0m
2026-07-09 EAI54VJ - Jul 9, 08:35 UTCJul 9, 09:30 UTC55m
2026-07-09 EAI41D - Jul 9, 07:00 UTCJul 9, 07:40 UTC40m
2026-07-08 EAI48D DUB → CFN Jul 8, 18:00 UTCJul 8, 18:35 UTC35m
2026-07-08 EAI17N IOM → DUB Jul 8, 16:45 UTCJul 8, 17:10 UTC25m
2026-07-08 EAI16M DUB → IOM Jul 8, 15:25 UTCJul 8, 15:50 UTC25m
2026-07-08 EAI43D - Jul 8, 13:45 UTCJul 8, 14:25 UTC40m
2026-07-08 EAI42D DUB → CFN Jul 8, 12:20 UTCJul 8, 13:00 UTC40m
2026-07-08 EAI31F EDI → DUB Jul 8, 09:05 UTCJul 8, 10:00 UTC55m
2026-07-08 EAI3HP DUB → EDI Jul 8, 07:25 UTCJul 8, 08:20 UTC55m
2026-06-26 EAI2DM GLA → DUB Jun 26, 12:59 UTCJun 26, 13:59 UTC1h 0m
2026-06-26 EAI26PK DUB → GLA Jun 26, 11:20 UTCJun 26, 12:05 UTC45m
2026-06-26 EAI31M - Jun 26, 08:50 UTCJun 26, 10:05 UTC1h 15m

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

Mode-S 4CAF0B frequently asked

What is Mode-S code 4CAF0B?
4CAF0B is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-HPK.
Where is Mode-S 4CAF0B registered?
Mode-S code 4CAF0B is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAF0B broadcasting right now?
Mode-S 4CAF0B is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAF0B, octal 23127413, decimal 5,025,547.
What flights does 4CAF0B operate?
Mode-S 4CAF0B has broadcast 20 distinct callsigns, including EAI41D, EAI16M, EAI48D, EAI42D, EAI17N.