Apparatus

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sensors Mode-S transponder

4CA6AA

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-DYW · BOEING 737-800

Hex
4CA6AA
Octal
23123252
Decimal
5,023,402
Country
IE
Tail
EI-DYW
Type
B738
Broadcasting now · callsign RYR76FJ · 38,025 ft
Flights observed
687
Distinct callsigns
20
Country
IE
Last broadcast
Jul 26, 21:55 UTC

Current position

4CA6AA is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4CA6AA 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
RYR824 - 5 2026-07-06
RYR70XH Ryanair 5 2026-05-11
RYR33TQ - 5 2026-07-06
RYR321E Ryanair 5 2026-05-11
RYR85FH - 4 2026-07-05
RYR80JR - 4 2026-07-05
RYR7SH Ryanair 4 2026-04-18
RYR6SW - 4 2026-07-05
RYR69QT Ryanair 4 2026-06-12
RYR5LF Ryanair 4 2026-05-11
RYR54FN - 4 2026-07-05
RYR45HE Ryanair 4 2026-07-22
RYR43NU Ryanair 4 2026-05-11
RYR39YC Ryanair 4 2026-06-12
RYR29BC - 4 2026-07-08
RYR29BA - 4 2026-07-05
RYR17XU - 4 2026-07-08
RYR16FR - 4 2026-07-05
RYR14EL Ryanair 4 2026-07-22
RYR9RW - 3 2026-04-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RYR4VT SNN → WRO Jul 26, 21:25 UTCJul 26, 21:55 UTC30m
2026-07-26 RYR50AM STN → VLC Jul 26, 18:00 UTCJul 26, 19:50 UTC1h 50m
2026-07-26 RYR6BN PMI → CGN Jul 26, 14:45 UTCJul 26, 16:55 UTC2h 10m
2026-07-26 RYR889A ALC → MST Jul 26, 12:00 UTCJul 26, 13:40 UTC1h 40m
2026-07-26 RYR8989 VLC → VRN Jul 26, 09:05 UTCJul 26, 10:35 UTC1h 30m
2026-07-26 RYR7SJ VLC → RAK Jul 26, 04:05 UTCJul 26, 08:10 UTC4h 6m
2026-07-25 RYR9596 TLS → VLC Jul 25, 22:00 UTCJul 25, 22:55 UTC55m
2026-07-25 RYR9597 VLC → TNG Jul 25, 20:05 UTCJul 25, 21:15 UTC1h 10m
2026-07-25 RYR3GV KRK → MAN Jul 25, 17:25 UTCJul 25, 19:20 UTC1h 55m
2026-07-25 RYR68UH VLC → TSF Jul 25, 14:55 UTCJul 25, 16:35 UTC1h 40m
2026-07-25 RYR52SU TSF → VLC Jul 25, 10:00 UTCJul 25, 12:00 UTC2h 0m
2026-07-25 RYR65FR VLC → TSF Jul 25, 06:40 UTCJul 25, 08:25 UTC1h 45m
2026-07-25 RYR19KU IBZ → VLC Jul 25, 05:20 UTCJul 25, 05:45 UTC25m
2026-07-25 RYR615 VLC → IBZ Jul 25, 03:55 UTCJul 25, 04:20 UTC25m
2026-07-24 RYR1XV FCO → CTA Jul 24, 21:20 UTCJul 24, 22:10 UTC50m
2026-07-24 RYR7401 VLC → MAH Jul 24, 19:50 UTCJul 24, 20:30 UTC40m
2026-07-24 RYR7LC BRS → KRK Jul 24, 12:45 UTCJul 24, 19:00 UTC6h 15m
2026-07-24 RYR431F PMI → NRN Jul 24, 10:05 UTCJul 24, 11:50 UTC1h 45m
2026-07-24 RYR96TQ VLC → BGY Jul 24, 07:15 UTCJul 24, 09:00 UTC1h 45m
2026-07-24 RYR19KU IBZ → VLC Jul 24, 05:15 UTCJul 24, 05:40 UTC25m
2026-07-24 RYR615 VLC → IBZ Jul 24, 03:50 UTCJul 24, 04:20 UTC30m
2026-07-23 RYR2BX JTR → MXP Jul 23, 20:05 UTCJul 23, 21:05 UTC1h 0m
2026-07-23 RYR20EE VLC → LIS Jul 23, 17:30 UTCJul 23, 18:55 UTC1h 25m
2026-07-23 RYR889A ALC → MST Jul 23, 14:55 UTCJul 23, 16:40 UTC1h 45m
2026-07-23 RYR8989 VLC → VRN Jul 23, 12:30 UTCJul 23, 14:00 UTC1h 30m
2026-07-23 RYR6HR TRS → BRI Jul 23, 11:00 UTCJul 23, 11:30 UTC30m
2026-07-23 RYR7209 KTW → BRI Jul 23, 09:20 UTCJul 23, 09:50 UTC30m
2026-07-23 RYR1FF MAD → BOD Jul 23, 06:45 UTCJul 23, 08:30 UTC1h 45m
2026-07-23 RYR71LM VLC → FCO Jul 23, 03:50 UTCJul 23, 05:15 UTC1h 25m
2026-07-22 RYR14EL TNG → VLC Jul 22, 21:40 UTCJul 22, 22:40 UTC1h 0m
2026-07-22 RYR45HE VLC → TNG Jul 22, 19:45 UTCJul 22, 20:45 UTC1h 0m
2026-07-22 RYR24ST PMI → VLC Jul 22, 18:15 UTCJul 22, 18:55 UTC40m
2026-07-22 RYR7372 VLC → PMI Jul 22, 16:15 UTCJul 22, 17:05 UTC50m
2026-07-22 RYR28GH - Jul 22, 12:35 UTCJul 22, 15:15 UTC2h 40m
2026-07-22 RYR45TF - Jul 22, 11:10 UTCJul 22, 11:35 UTC25m
2026-07-22 RYR7401 VLC → MAH Jul 22, 05:20 UTCJul 22, 05:25 UTC5m
2026-07-21 RYR6HR IBZ → VLC Jul 21, 21:40 UTCJul 21, 22:05 UTC25m
2026-07-21 RYR7209 VLC → IBZ Jul 21, 20:15 UTCJul 21, 20:35 UTC20m
2026-07-21 RYR19KL - Jul 21, 12:55 UTCJul 21, 19:00 UTC6h 5m
2026-07-21 RYR184Q BHX → VLC Jul 21, 09:45 UTCJul 21, 11:45 UTC2h 0m
2026-07-21 RYR66BN SKG → STN Jul 21, 06:45 UTCJul 21, 08:55 UTC2h 10m
2026-07-21 RYR19KU IBZ → VLC Jul 21, 05:20 UTCJul 21, 05:45 UTC25m
2026-07-21 RYR615 VLC → IBZ Jul 21, 03:50 UTCJul 21, 04:20 UTC30m
2026-07-20 RYR8758 SUF → VLC Jul 20, 23:35 UTCJul 21, 01:35 UTC2h 0m
2026-07-20 RYR8757 VLC → SUF Jul 20, 21:05 UTCJul 20, 22:45 UTC1h 40m
2026-07-20 RYR51XX - Jul 20, 18:30 UTCJul 20, 19:55 UTC1h 25m
2026-07-20 RYR5275 - Jul 20, 15:45 UTCJul 20, 16:45 UTC1h 0m
2026-07-20 RYR14EL TNG → VLC Jul 20, 11:20 UTCJul 20, 12:15 UTC55m
2026-07-20 RYR45HE VLC → TNG Jul 20, 09:25 UTCJul 20, 10:30 UTC1h 5m
2026-07-20 RYR1FF - Jul 20, 06:45 UTCJul 20, 08:30 UTC1h 45m

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

Mode-S 4CA6AA frequently asked

What is Mode-S code 4CA6AA?
4CA6AA is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-DYW.
Where is Mode-S 4CA6AA registered?
Mode-S code 4CA6AA is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CA6AA broadcasting right now?
Yes. Mode-S 4CA6AA is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CA6AA, octal 23123252, decimal 5,023,402.
What flights does 4CA6AA operate?
Mode-S 4CA6AA has broadcast 20 distinct callsigns, including RYR824, RYR70XH, RYR33TQ, RYR321E, RYR85FH.