sensors Mode-S transponder

4CAEE2

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-NGX · PILATUS PC-12

Hex
4CAEE2
Octal
23127342
Decimal
5,025,506
Country
IE
Tail
EI-NGX
Type
PC12
No current signal · last broadcast 1d ago
Flights observed
137
Distinct callsigns
20
Country
IE
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 4CAEE2.

Country allocation

The ICAO 24-bit address 4CAEE2 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
EIX52B - 7 2026-06-14
EIX85U - 6 2026-04-16
EIX94K - 5 2026-04-15
EIX91B - 4 2026-04-27
EIX43N - 4 2026-06-09
EIX91P - 3 2026-05-30
EIX84Q - 3 2026-05-18
EIX71U - 3 2026-06-25
EIX65B - 3 2026-05-17
EIX61P - 3 2026-06-24
EIX59G - 3 2026-05-09
EIX58S - 3 2026-04-17
EIX36V - 3 2026-04-30
EIX34Y - 3 2026-05-29
EIX30Z - 3 2026-06-19
EIX29W - 3 2026-06-14
EIX28J - 3 2026-04-23
EIX19Q - 3 2026-07-15
EIX15J - 3 2026-05-26
EIX13V - 3 2026-06-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 EIX58H - Jul 16, 08:25 UTCJul 16, 09:50 UTC1h 25m
2026-07-15 EIX58H - Jul 15, 12:00 UTCJul 15, 13:55 UTC1h 55m
2026-07-15 EIX19Q - Jul 15, 09:10 UTCJul 15, 11:30 UTC2h 20m
2026-07-13 EIX19Q - Jul 13, 14:45 UTCJul 13, 16:45 UTC2h 0m
2026-07-12 EIX19Q - Jul 12, 10:30 UTCJul 12, 11:55 UTC1h 25m
2026-07-10 EIX66F - Jul 10, 16:00 UTCJul 10, 16:50 UTC50m
2026-07-10 EIX25B - Jul 10, 13:45 UTCJul 10, 15:10 UTC1h 25m
2026-07-08 EIX25B - Jul 8, 09:40 UTCJul 8, 10:35 UTC55m
2026-07-08 EIX83D - Jul 8, 06:40 UTCJul 8, 08:30 UTC1h 50m
2026-07-07 EIX83D - Jul 7, 15:45 UTCJul 7, 16:50 UTC1h 5m
2026-07-07 EIX35X - Jul 7, 13:25 UTCJul 7, 14:25 UTC1h 0m
2026-07-06 EIX11C - Jul 6, 14:30 UTCJul 6, 16:05 UTC1h 35m
2026-07-06 EIX62Z OXF → LBG Jul 6, 12:05 UTCJul 6, 13:15 UTC1h 10m
2026-07-06 EIX62Z CEQ → OXF Jul 6, 07:45 UTCJul 6, 11:05 UTC3h 20m
2026-07-05 EIX02Z - Jul 5, 13:05 UTCJul 5, 14:10 UTC1h 5m
2026-07-05 EIX02Z - Jul 5, 10:55 UTCJul 5, 11:30 UTC35m
2026-07-03 EIX79W - Jul 3, 07:55 UTCJul 3, 08:50 UTC55m
2026-07-02 EIX53N - Jul 2, 13:10 UTCJul 2, 16:55 UTC3h 45m
2026-07-02 EIX53C LTT → BCN Jul 2, 10:00 UTCJul 2, 11:10 UTC1h 10m
2026-07-02 EIX65Z MAD → LTT Jul 2, 07:15 UTCJul 2, 09:25 UTC2h 10m
2026-06-30 EIX65Z - Jun 30, 08:55 UTCJun 30, 11:00 UTC2h 5m
2026-06-26 EIX99E - Jun 26, 11:30 UTCJun 26, 12:44 UTC1h 15m
2026-06-25 EIX71U - Jun 25, 14:24 UTCJun 25, 15:34 UTC1h 10m
2026-06-25 EIX71U - Jun 25, 11:39 UTCJun 25, 13:29 UTC1h 50m
2026-06-25 EIX71U - Jun 25, 08:45 UTCJun 25, 09:05 UTC20m
2026-06-24 EIX35K BRN → LTT Jun 24, 16:05 UTCJun 24, 17:29 UTC1h 25m
2026-06-24 EIX61P CEQ → BRN Jun 24, 13:40 UTCJun 24, 14:50 UTC1h 10m
2026-06-24 EIX61P - Jun 24, 10:25 UTCJun 24, 11:59 UTC1h 35m
2026-06-23 EIX61P - Jun 23, 11:45 UTCJun 23, 13:00 UTC1h 15m
2026-06-23 EIX29L - Jun 23, 09:09 UTCJun 23, 10:55 UTC1h 45m
2026-06-23 EIX29L - Jun 23, 07:05 UTCJun 23, 07:45 UTC40m
2026-06-21 EIX13V - Jun 21, 15:19 UTCJun 21, 15:34 UTC15m
2026-06-21 EIX13V - Jun 21, 12:44 UTCJun 21, 14:30 UTC1h 45m
2026-06-21 EIX13V - Jun 21, 10:04 UTCJun 21, 11:49 UTC1h 45m
2026-06-19 EIX30Z - Jun 19, 11:14 UTCJun 19, 12:44 UTC1h 30m
2026-06-19 EIX30Z MME → BQH Jun 19, 09:14 UTCJun 19, 10:29 UTC1h 15m
2026-06-19 EIX30Z - Jun 19, 07:39 UTCJun 19, 08:34 UTC55m
2026-06-17 EIX38S - Jun 17, 10:40 UTCJun 17, 13:05 UTC2h 25m
2026-06-14 EIX52B - Jun 14, 17:10 UTCJun 14, 18:00 UTC50m
2026-06-14 EIX29W MAN → GLA Jun 14, 12:10 UTCJun 14, 13:05 UTC55m
2026-06-14 EIX29W - Jun 14, 09:50 UTCJun 14, 10:35 UTC45m
2026-06-11 EIX29W - Jun 11, 16:55 UTCJun 11, 17:20 UTC25m
2026-06-11 EIX52B - Jun 11, 15:20 UTCJun 11, 16:15 UTC55m
2026-06-10 EIX87D - Jun 10, 08:50 UTCJun 10, 10:10 UTC1h 20m
2026-06-09 EIX43N BLK → FAB Jun 9, 20:25 UTCJun 9, 20:45 UTC20m
2026-06-09 EIX43N - Jun 9, 19:15 UTCJun 9, 19:30 UTC15m
2026-06-09 EIX43N - Jun 9, 18:15 UTCJun 9, 18:35 UTC20m
2026-06-09 EIX43N - Jun 9, 14:05 UTCJun 9, 14:55 UTC50m
2026-06-08 EIX52B - Jun 8, 17:55 UTCJun 8, 21:30 UTC3h 35m
2026-06-08 EIK88K LYN → CEQ Jun 8, 10:20 UTCJun 8, 11:25 UTC1h 5m

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

Mode-S 4CAEE2 frequently asked

What is Mode-S code 4CAEE2?
4CAEE2 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-NGX.
Where is Mode-S 4CAEE2 registered?
Mode-S code 4CAEE2 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAEE2 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAEE2, octal 23127342, decimal 5,025,506.
What flights does 4CAEE2 operate?
Mode-S 4CAEE2 has broadcast 20 distinct callsigns, including EIX52B, EIX85U, EIX94K, EIX91B, EIX43N.