Apparatus

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sensors Mode-S transponder

4CA56A

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-DWE · BOEING 737-800

Hex
4CA56A
Octal
23122552
Decimal
5,023,082
Country
IE
Tail
EI-DWE
Type
B738
No current signal · last broadcast Jul 26, 21:45 UTC
Flights observed
651
Distinct callsigns
20
Country
IE
Last broadcast
Jul 26, 21:45 UTC

Last known position

Most recent position reported by Mode-S 4CA56A.

Country allocation

The ICAO 24-bit address 4CA56A 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
RYR100T - 7 2026-07-24
RYR9RJ - 5 2026-07-16
RYR9ED Ryanair 5 2026-05-26
RYR900A - 5 2026-07-16
RYR5PU Ryanair 5 2026-05-26
RYR20KL Ryanair 5 2026-05-25
RYR9MX Ryanair 4 2026-04-19
RYR8RP - 4 2026-07-08
RYR3615 - 4 2026-07-08
RYR2AT Ryanair 4 2026-05-01
RYR256T Ryanair 4 2026-05-01
RYR97SR Ryanair 3 2026-05-02
RYR92NU - 3 2026-07-18
RYR85AX Ryanair 3 2026-05-03
RYR84QL Ryanair 3 2026-05-26
RYR846F - 3 2026-06-30
RYR769K - 3 2026-06-30
RYR62BC Ryanair 3 2026-05-03
RYR6263 - 3 2026-07-16
RYR5WZ - 3 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RYR3HT GRO → NRN Jul 26, 20:05 UTCJul 26, 21:45 UTC1h 40m
2026-07-26 RYR66JU ALC → MXP Jul 26, 17:35 UTCJul 26, 19:15 UTC1h 40m
2026-07-26 RYR9ZM EIN → MAD Jul 26, 14:50 UTCJul 26, 16:45 UTC1h 55m
2026-07-26 RYR61CT ALC → FCO Jul 26, 12:05 UTCJul 26, 13:30 UTC1h 25m
2026-07-26 RYR4JQ EDI → BUD Jul 26, 07:45 UTCJul 26, 10:25 UTC2h 40m
2026-07-26 RYR3QE PMO → BGY Jul 26, 04:10 UTCJul 26, 06:40 UTC2h 31m
2026-07-25 RYR95QF EMA → ALC Jul 25, 21:00 UTCJul 25, 23:10 UTC2h 10m
2026-07-25 RYR378Z DUB → EMA Jul 25, 19:30 UTCJul 25, 20:10 UTC40m
2026-07-25 RYR2LR KRK → MAN Jul 25, 17:55 UTCJul 25, 18:35 UTC40m
2026-07-25 RYR10NM PMI → EMA Jul 25, 14:55 UTCJul 25, 17:05 UTC2h 10m
2026-07-25 RYR3LL PRG → BCN Jul 25, 11:35 UTCJul 25, 13:35 UTC2h 0m
2026-07-25 RYR55FV ALC → EMA Jul 25, 08:20 UTCJul 25, 10:35 UTC2h 15m
2026-07-25 RYR92ZR EMA → ALC Jul 25, 05:00 UTCJul 25, 07:25 UTC2h 25m
2026-07-24 RYR100T EMA → EMA Jul 24, 16:00 UTCJul 24, 16:55 UTC55m
2026-07-24 RYR100T - Jul 24, 15:00 UTCJul 24, 15:45 UTC45m
2026-07-24 RYR100T EMA → EMA Jul 24, 13:10 UTCJul 24, 14:15 UTC1h 5m
2026-07-24 RYR100T - Jul 24, 10:00 UTCJul 24, 10:40 UTC40m
2026-07-24 RYR100T - Jul 24, 09:05 UTCJul 24, 09:45 UTC40m
2026-07-24 RYR100T - Jul 24, 08:10 UTCJul 24, 08:55 UTC45m
2026-07-24 RYR100T EMA → EMA Jul 24, 07:15 UTCJul 24, 07:55 UTC40m
2026-07-23 RYR39LG AGP → EMA Jul 23, 17:00 UTCJul 23, 19:25 UTC2h 25m
2026-07-23 RYR59VA WRO → EMA Jul 23, 14:10 UTCJul 23, 14:35 UTC25m
2026-07-23 RYR6UP AGP → STN Jul 23, 12:45 UTCJul 23, 13:05 UTC20m
2026-07-23 RYR61FP DUB → AGP Jul 23, 08:55 UTCJul 23, 11:25 UTC2h 30m
2026-07-23 RYR66XX AGP → DUB Jul 23, 05:30 UTCJul 23, 08:00 UTC2h 30m
2026-07-22 RYR5LF BUD → BGY Jul 22, 21:00 UTCJul 22, 22:15 UTC1h 15m
2026-07-22 RYR43NU AGP → BCN Jul 22, 18:45 UTCJul 22, 19:50 UTC1h 5m
2026-07-22 RYR556J FNI → RAK Jul 22, 14:55 UTCJul 22, 17:30 UTC2h 35m
2026-07-22 RYR42NF DUB → LPL Jul 22, 11:25 UTCJul 22, 13:55 UTC2h 30m
2026-07-21 RYR19HF PMO → CRL Jul 21, 16:55 UTCJul 21, 19:05 UTC2h 10m
2026-07-21 RYR81UZ - Jul 21, 14:45 UTCJul 21, 15:50 UTC1h 5m
2026-07-21 RYR64QD - Jul 21, 12:35 UTCJul 21, 13:55 UTC1h 20m
2026-07-21 RYR2DV - Jul 21, 10:20 UTCJul 21, 11:15 UTC55m
2026-07-21 RYR6VE BGY → BVA Jul 21, 08:40 UTCJul 21, 09:40 UTC1h 0m
2026-07-21 RYR1AP STN → VIE Jul 21, 06:30 UTCJul 21, 07:40 UTC1h 10m
2026-07-21 RYR34FU VLC → WRO Jul 21, 04:10 UTCJul 21, 05:30 UTC1h 20m
2026-07-20 RYR1TD SUF → FKB Jul 20, 20:45 UTCJul 20, 21:50 UTC1h 5m
2026-07-20 RYR79KT GDN → ZAD Jul 20, 18:50 UTCJul 20, 20:00 UTC1h 10m
2026-07-20 RYR5BC MAD → PMI Jul 20, 17:15 UTCJul 20, 18:05 UTC50m
2026-07-20 RYR23YV PMO → BRI Jul 20, 15:45 UTCJul 20, 16:30 UTC45m
2026-07-20 RYR92JA - Jul 20, 11:35 UTCJul 20, 12:45 UTC1h 10m
2026-07-20 RYR15XJ - Jul 20, 09:35 UTCJul 20, 10:45 UTC1h 10m
2026-07-20 RYR55NA - Jul 20, 06:20 UTCJul 20, 07:35 UTC1h 15m
2026-07-20 RYR4916 - Jul 20, 04:15 UTCJul 20, 05:35 UTC1h 20m
2026-07-19 RYR8FP PMO → VRN Jul 19, 22:15 UTCJul 19, 23:25 UTC1h 10m
2026-07-19 RYR142H - Jul 19, 20:15 UTCJul 19, 21:25 UTC1h 10m
2026-07-19 RYR1PJ MLA → ATH Jul 19, 18:30 UTCJul 19, 19:05 UTC35m
2026-07-19 RYR34MP - Jul 19, 16:40 UTCJul 19, 17:25 UTC45m
2026-07-19 RYR86VH CRL → PMO Jul 19, 13:15 UTCJul 19, 15:15 UTC2h 0m
2026-07-19 RYR2AK BVA → NAP Jul 19, 09:35 UTCJul 19, 12:00 UTC2h 25m

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

Mode-S 4CA56A frequently asked

What is Mode-S code 4CA56A?
4CA56A is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-DWE.
Where is Mode-S 4CA56A registered?
Mode-S code 4CA56A is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CA56A broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CA56A, octal 23122552, decimal 5,023,082.
What flights does 4CA56A operate?
Mode-S 4CA56A has broadcast 20 distinct callsigns, including RYR100T, RYR9RJ, RYR9ED, RYR900A, RYR5PU.