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sensors Mode-S transponder

4CAEC8

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-HNH

Hex
4CAEC8
Octal
23127310
Decimal
5,025,480
Country
IE
Tail
EI-HNH
Type
EC45
No current signal · last broadcast Jul 26, 17:15 UTC
Flights observed
345
Distinct callsigns
2
Country
IE
Last broadcast
Jul 26, 17:15 UTC

Last known position

Most recent position reported by Mode-S 4CAEC8.

Country allocation

The ICAO 24-bit address 4CAEC8 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 2 distinct

Callsign Airline Flights Last seen
EIHNH - 337 2026-07-26
NIBBIO01 - 8 2026-07-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EIHNH - Jul 26, 17:05 UTCJul 26, 17:15 UTC10m
2026-07-26 EIHNH - Jul 26, 15:25 UTCJul 26, 16:20 UTC55m
2026-07-25 EIHNH - Jul 25, 13:20 UTCJul 25, 14:05 UTC45m
2026-07-25 EIHNH - Jul 25, 12:30 UTCJul 25, 12:45 UTC15m
2026-07-25 EIHNH - Jul 25, 02:25 UTCJul 25, 03:10 UTC45m
2026-07-24 EIHNH - Jul 24, 18:35 UTCJul 24, 19:00 UTC25m
2026-07-24 EIHNH - Jul 24, 11:40 UTCJul 24, 11:55 UTC15m
2026-07-24 EIHNH - Jul 24, 08:10 UTCJul 24, 09:20 UTC1h 10m
2026-07-23 EIHNH - Jul 23, 07:20 UTCJul 23, 07:40 UTC20m
2026-07-22 EIHNH - Jul 22, 20:45 UTCJul 22, 21:20 UTC35m
2026-07-22 EIHNH - Jul 22, 18:20 UTCJul 22, 18:30 UTC10m
2026-07-22 EIHNH - Jul 22, 16:55 UTCJul 22, 17:05 UTC10m
2026-07-20 EIHNH - Jul 20, 15:00 UTCJul 20, 16:15 UTC1h 15m
2026-07-20 NIBBIO01 - Jul 20, 10:20 UTCJul 20, 10:55 UTC35m
2026-07-20 EIHNH - Jul 20, 06:35 UTCJul 20, 06:55 UTC20m
2026-07-19 EIHNH - Jul 19, 20:35 UTCJul 19, 20:45 UTC10m
2026-07-19 EIHNH - Jul 19, 19:10 UTCJul 19, 20:00 UTC50m
2026-07-19 EIHNH - Jul 19, 10:50 UTCJul 19, 11:30 UTC40m
2026-07-19 EIHNH - Jul 19, 10:05 UTCJul 19, 10:15 UTC10m
2026-07-18 EIHNH - Jul 18, 23:05 UTCJul 18, 23:15 UTC10m
2026-07-18 EIHNH - Jul 18, 22:05 UTCJul 18, 22:15 UTC10m
2026-07-18 EIHNH - Jul 18, 16:45 UTCJul 18, 17:30 UTC45m
2026-07-18 EIHNH - Jul 18, 07:35 UTCJul 18, 08:25 UTC50m
2026-07-17 EIHNH - Jul 17, 14:30 UTCJul 17, 15:15 UTC45m
2026-07-17 NIBBIO01 - Jul 17, 13:10 UTCJul 17, 13:40 UTC30m
2026-07-17 EIHNH - Jul 17, 11:10 UTCJul 17, 11:45 UTC35m
2026-07-17 EIHNH - Jul 17, 08:25 UTCJul 17, 09:50 UTC1h 25m
2026-07-16 EIHNH - Jul 16, 22:45 UTCJul 16, 23:20 UTC35m
2026-07-16 EIHNH - Jul 16, 20:49 UTCJul 16, 21:30 UTC40m
2026-07-16 EIHNH - Jul 16, 19:40 UTCJul 16, 19:55 UTC15m
2026-07-16 EIHNH - Jul 16, 16:05 UTCJul 16, 16:15 UTC10m
2026-07-16 EIHNH - Jul 16, 14:45 UTCJul 16, 15:30 UTC45m
2026-07-16 EIHNH - Jul 16, 13:00 UTCJul 16, 13:30 UTC30m
2026-07-15 EIHNH - Jul 15, 22:30 UTCJul 15, 22:40 UTC10m
2026-07-15 EIHNH - Jul 15, 08:30 UTCJul 15, 08:45 UTC15m
2026-07-14 EIHNH - Jul 14, 22:10 UTCJul 14, 22:55 UTC44m
2026-07-14 EIHNH - Jul 14, 21:30 UTCJul 14, 21:40 UTC10m
2026-07-14 EIHNH - Jul 14, 08:15 UTCJul 14, 08:50 UTC35m
2026-07-13 EIHNH - Jul 13, 15:10 UTCJul 13, 15:20 UTC10m
2026-07-13 EIHNH - Jul 13, 14:05 UTCJul 13, 14:15 UTC10m
2026-07-13 EIHNH - Jul 13, 10:10 UTCJul 13, 10:35 UTC25m
2026-07-12 EIHNH - Jul 12, 20:01 UTCJul 12, 20:10 UTC10m
2026-07-12 EIHNH - Jul 12, 17:05 UTCJul 12, 17:15 UTC10m
2026-07-12 EIHNH - Jul 12, 15:40 UTCJul 12, 15:50 UTC10m
2026-07-12 EIHNH - Jul 12, 14:50 UTCJul 12, 15:01 UTC10m
2026-07-12 EIHNH - Jul 12, 12:05 UTCJul 12, 12:20 UTC15m
2026-07-12 EIHNH - Jul 12, 11:20 UTCJul 12, 11:30 UTC10m
2026-07-12 EIHNH - Jul 12, 10:10 UTCJul 12, 10:20 UTC10m
2026-07-12 EIHNH - Jul 12, 08:35 UTCJul 12, 08:45 UTC10m
2026-07-12 EIHNH - Jul 12, 07:55 UTCJul 12, 08:05 UTC10m

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

Mode-S 4CAEC8 frequently asked

What is Mode-S code 4CAEC8?
4CAEC8 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-HNH.
Where is Mode-S 4CAEC8 registered?
Mode-S code 4CAEC8 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAEC8 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 17:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAEC8, octal 23127310, decimal 5,025,480.
What flights does 4CAEC8 operate?
Mode-S 4CAEC8 has broadcast 2 distinct callsigns, including EIHNH, NIBBIO01.