sensors Mode-S transponder

4CAEE3

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EJ-MACK · PILATUS PC-24

Hex
4CAEE3
Octal
23127343
Decimal
5,025,507
Country
IE
Tail
EJ-MACK
Type
PC24
Transponder active on ground
Flights observed
74
Distinct callsigns
20
Country
IE
Last broadcast
21h ago

Last known position

Most recent position reported by Mode-S 4CAEE3.

Country allocation

The ICAO 24-bit address 4CAEE3 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
EIX56D - 6 2026-04-27
EIX76J - 5 2026-05-23
EIX21X - 5 2026-05-27
EIX06X - 5 2026-04-21
EIX32N - 4 2026-05-27
EIX09W - 4 2026-05-01
EIX90V - 3 2026-05-20
EIX90R - 3 2026-05-13
EIX87F - 3 2026-04-14
EIX76F - 3 2026-05-14
EIX70J - 3 2026-05-03
EIX60P - 3 2026-04-20
EIX59E - 3 2026-05-09
EIX47S - 3 2026-05-03
EIX04M - 3 2026-04-24
EIX95K - 2 2026-04-18
EIX95 - 2 2026-04-16
EIX92U - 2 2026-04-24
EIX21N - 2 2026-04-27
EIX18Z - 2 2026-04-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 EIX58Z - May 29, 12:25 UTCMay 29, 13:45 UTC1h 20m
2026-05-27 EIX21X - May 27, 14:05 UTCMay 27, 14:55 UTC50m
2026-05-27 EIX32N - May 27, 09:55 UTCMay 27, 12:10 UTC2h 15m
2026-05-26 EIX22Z GLO → FAO May 26, 14:20 UTCMay 26, 16:55 UTC2h 35m
2026-05-26 EIX19D - May 26, 10:29 UTCMay 26, 11:54 UTC1h 25m
2026-05-25 EIX05X IBZ → GVA May 25, 13:55 UTCMay 25, 15:35 UTC1h 40m
2026-05-23 EIX58B NCE → IBZ May 23, 13:20 UTCMay 23, 14:40 UTC1h 20m
2026-05-23 EIX76J - May 23, 08:10 UTCMay 23, 10:00 UTC1h 50m
2026-05-22 EIX32N FAO → GLO May 22, 13:55 UTCMay 22, 16:20 UTC2h 25m
2026-05-22 EIX32N - May 22, 10:00 UTCMay 22, 12:30 UTC2h 30m
2026-05-22 EIX32N - May 22, 08:30 UTCMay 22, 08:45 UTC15m
2026-05-20 EIX90V LPL → SOU May 20, 17:50 UTCMay 20, 18:30 UTC40m
2026-05-20 EIX90V BOH → LPL May 20, 08:05 UTCMay 20, 08:50 UTC45m
2026-05-19 EIX90V - May 19, 16:55 UTCMay 19, 17:25 UTC30m
2026-05-19 EIX76J - May 19, 15:40 UTCMay 19, 16:25 UTC45m
2026-05-18 EIX76J - May 18, 17:45 UTCMay 18, 18:35 UTC49m
2026-05-17 EIX76J - May 17, 16:10 UTCMay 17, 18:01 UTC1h 50m
2026-05-14 EIX76J - May 14, 09:10 UTCMay 14, 10:55 UTC1h 45m
2026-05-14 EIX76F - May 14, 08:15 UTCMay 14, 08:40 UTC25m
2026-05-13 EIX76F LBG → LTN May 13, 20:15 UTCMay 13, 21:15 UTC1h 0m
2026-05-13 EIX76F - May 13, 17:15 UTCMay 13, 18:05 UTC50m
2026-05-13 EIX90R ZRH → OXF May 13, 14:35 UTCMay 13, 16:10 UTC1h 35m
2026-05-11 EIX90R - May 11, 13:20 UTCMay 11, 14:50 UTC1h 30m
2026-05-11 EIX90R BOH → OXF May 11, 11:10 UTCMay 11, 11:35 UTC25m
2026-05-09 EIX59E LPL → BOH May 9, 15:35 UTCMay 9, 16:15 UTC40m
2026-05-09 EIX59E BOH → LPL May 9, 06:00 UTCMay 9, 06:45 UTC45m
2026-05-08 EIX59E GLO → BOH May 8, 15:30 UTCMay 8, 15:55 UTC25m
2026-05-08 EIX10N - May 8, 14:05 UTCMay 8, 14:50 UTC45m
2026-05-08 EIX21X - May 8, 09:54 UTCMay 8, 12:10 UTC2h 15m
2026-05-07 EIX21X - May 7, 14:40 UTCMay 7, 15:45 UTC1h 5m
2026-05-05 EIX21X - May 5, 12:55 UTCMay 5, 14:15 UTC1h 20m
2026-05-03 EIX47S - May 3, 15:15 UTCMay 3, 16:05 UTC50m
2026-05-03 EIX47S - May 3, 13:25 UTCMay 3, 14:30 UTC1h 5m
2026-05-03 EIX47S GLO → BBS May 3, 12:15 UTCMay 3, 12:40 UTC25m
2026-05-03 EIX67T - May 3, 10:35 UTCMay 3, 11:35 UTC1h 0m
2026-05-03 EIX70J - May 3, 08:05 UTCMay 3, 09:25 UTC1h 20m
2026-05-02 EIX70J NCL → BQH May 2, 17:05 UTCMay 2, 18:00 UTC55m
2026-05-02 EIX70J BQH → NCL May 2, 09:10 UTCMay 2, 10:00 UTC50m
2026-05-01 EIX21X - May 1, 15:10 UTCMay 1, 15:40 UTC30m
2026-05-01 EIX09W DUB → BHX May 1, 12:15 UTCMay 1, 12:50 UTC35m
2026-04-30 EIX09W - Apr 30, 09:10 UTCApr 30, 09:40 UTC30m
2026-04-28 EIX09W - Apr 28, 16:55 UTCApr 28, 17:25 UTC30m
2026-04-28 EIX09W DUB → KIR Apr 28, 12:10 UTCApr 28, 12:45 UTC35m
2026-04-28 EIX59R - Apr 28, 10:00 UTCApr 28, 10:50 UTC50m
2026-04-27 EIX21N DUB → BHX Apr 27, 17:10 UTCApr 27, 17:45 UTC35m
2026-04-27 EIX21N - Apr 27, 15:15 UTCApr 27, 16:30 UTC1h 15m
2026-04-27 EIX56D - Apr 27, 12:05 UTCApr 27, 12:55 UTC50m
2026-04-26 EIX56D EDI → BHX Apr 26, 14:55 UTCApr 26, 15:40 UTC45m
2026-04-26 EIX56D - Apr 26, 12:40 UTCApr 26, 13:35 UTC55m
2026-04-25 EIX56D GLA → LTN Apr 25, 21:05 UTCApr 25, 22:00 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 EJ-MACK page for operator, model, and routing details .

Mode-S 4CAEE3 frequently asked

What is Mode-S code 4CAEE3?
4CAEE3 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EJ-MACK.
Where is Mode-S 4CAEE3 registered?
Mode-S code 4CAEE3 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAEE3 broadcasting right now?
Mode-S 4CAEE3 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 4CAEE3, octal 23127343, decimal 5,025,507.
What flights does 4CAEE3 operate?
Mode-S 4CAEE3 has broadcast 20 distinct callsigns, including EIX56D, EIX76J, EIX21X, EIX06X, EIX32N.