sensors Mode-S transponder

4CAE4C

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-IHZ · BOEING 737 MAX 8

Hex
4CAE4C
Octal
23127114
Decimal
5,025,356
Country
IE
Tail
EI-IHZ
Type
B38M
No current signal · last broadcast 16h ago
Flights observed
17
Distinct callsigns
11
Country
IE
Last broadcast
16h ago

Last known position

Most recent position reported by Mode-S 4CAE4C.

Country allocation

The ICAO 24-bit address 4CAE4C 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 11 distinct

Callsign Airline Flights Last seen
RYR7XB Ryanair 3 2026-04-13
RYR12ZY - 3 2026-04-13
RYR7XY - 2 2026-04-14
RYR18TH - 2 2026-04-13
RYR9654 - 1 2026-04-12
RYR88AA - 1 2026-04-12
RYR7ZX - 1 2026-04-13
RYR53UX - 1 2026-04-14
RYR2HP - 1 2026-04-13
RYR19YB - 1 2026-04-13
RYR13QJ - 1 2026-04-13

Recent flights last 17

DateFlightRouteTakeoffLandingDuration
2026-04-14 RYR53UX - Apr 14, 10:05 UTCApr 14, 11:05 UTC1h 0m
2026-04-14 RYR7XY - Apr 14, 07:10 UTCApr 14, 08:20 UTC1h 10m
2026-04-14 RYR7XY - Apr 14, 05:55 UTCApr 14, 07:10 UTC1h 15m
2026-04-13 RYR2HP - Apr 13, 20:55 UTCApr 13, 23:40 UTC2h 45m
2026-04-13 RYR19YB ATH → MLA Apr 13, 17:20 UTCApr 13, 18:55 UTC1h 35m
2026-04-13 RYR7ZX MLA → ATH Apr 13, 13:40 UTCApr 13, 14:50 UTC1h 10m
2026-04-13 RYR12ZY - Apr 13, 12:20 UTCApr 13, 12:35 UTC15m
2026-04-13 RYR12ZY - Apr 13, 11:55 UTCApr 13, 12:35 UTC40m
2026-04-13 RYR12ZY - Apr 13, 11:40 UTCApr 13, 12:15 UTC35m
2026-04-13 RYR13QJ - Apr 13, 09:35 UTCApr 13, 10:30 UTC55m
2026-04-13 RYR7XB BRS → VCE Apr 13, 08:20 UTCApr 13, 08:35 UTC15m
2026-04-13 RYR7XB BRS → VCE Apr 13, 08:05 UTCApr 13, 08:35 UTC30m
2026-04-13 RYR7XB BRS → VCE Apr 13, 06:50 UTCApr 13, 08:15 UTC1h 25m
2026-04-13 RYR18TH - Apr 13, 04:20 UTCApr 13, 05:40 UTC1h 20m
2026-04-13 RYR18TH - Apr 13, 03:45 UTCApr 13, 04:15 UTC30m
2026-04-12 RYR88AA - Apr 12, 19:40 UTCApr 12, 20:15 UTC35m
2026-04-12 RYR9654 - Apr 12, 17:15 UTCApr 12, 18:30 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-IHZ page for operator, model, and routing details .

Mode-S 4CAE4C frequently asked

What is Mode-S code 4CAE4C?
4CAE4C is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-IHZ.
Where is Mode-S 4CAE4C registered?
Mode-S code 4CAE4C is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAE4C broadcasting right now?
No active broadcast right now. Last signal was 16h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAE4C, octal 23127114, decimal 5,025,356.
What flights does 4CAE4C operate?
Mode-S 4CAE4C has broadcast 11 distinct callsigns, including RYR7XB, RYR12ZY, RYR7XY, RYR18TH, RYR9654.