Apparatus

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sensors Mode-S transponder

4CA6FB

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-DYX · BOEING 737-800

Hex
4CA6FB
Octal
23123373
Decimal
5,023,483
Country
IE
Tail
EI-DYX
Type
B738
No current signal · last broadcast 2h ago
Flights observed
320
Distinct callsigns
20
Country
IE
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 4CA6FB.

Country allocation

The ICAO 24-bit address 4CA6FB 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
RYR5AD Ryanair 6 2026-04-21
RYR28SP Ryanair 5 2026-04-21
RYR88DL Ryanair 3 2026-04-18
RYR8868 - 3 2026-04-16
RYR55MM Ryanair 3 2026-04-22
RYR48AW Ryanair 3 2026-04-21
RYR27CL Ryanair 3 2026-04-21
RYR989J Ryanair 2 2026-05-15
RYR96SR Ryanair 2 2026-05-14
RYR94MC - 2 2026-04-15
RYR90TA - 2 2026-04-16
RYR90SF Ryanair 2 2026-05-15
RYR8649 - 2 2026-04-13
RYR7LG Ryanair 2 2026-04-19
RYR7901 Ryanair 2 2026-05-13
RYR78FL Ryanair 2 2026-05-03
RYR761H - 2 2026-04-13
RYR6NY Ryanair 2 2026-05-14
RYR6BT Ryanair 2 2026-04-18
RYR65CN Ryanair 2 2026-05-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 RYR47FF LTN → AGP May 29, 21:00 UTCMay 29, 22:30 UTC1h 30m
2026-05-29 RYR32UX OPO → PMI May 29, 18:25 UTCMay 29, 19:50 UTC1h 25m
2026-05-29 RYR4503 LIL → OPO May 29, 15:15 UTCMay 29, 17:20 UTC2h 6m
2026-05-29 RYR4502 OPO → LIL May 29, 12:15 UTCMay 29, 14:10 UTC1h 55m
2026-05-29 RYR53MM BRS → OPO May 29, 09:00 UTCMay 29, 10:50 UTC1h 50m
2026-05-29 RYR1332 OPO → BRS May 29, 06:25 UTCMay 29, 08:05 UTC1h 40m
2026-05-29 RYR880 RAK → TRN May 29, 04:00 UTCMay 29, 05:15 UTC1h 15m
2026-05-28 RYR3HT GRO → NRN May 28, 23:05 UTCMay 29, 00:45 UTC1h 40m
2026-05-28 RYR5BQ STN → BGY May 28, 19:40 UTCMay 28, 20:50 UTC1h 10m
2026-05-28 RYR27ZZ BER → AGP May 28, 17:15 UTCMay 28, 18:35 UTC1h 20m
2026-05-28 RYR24GM PMO → MXP May 28, 13:00 UTCMay 28, 14:15 UTC1h 15m
2026-05-28 RYR7LY HHN → AGA May 28, 10:30 UTCMay 28, 11:50 UTC1h 20m
2026-05-28 RYR41ZK BDS → MXP May 28, 08:00 UTCMay 28, 09:25 UTC1h 25m
2026-05-28 RYR41UD MXP → BDS May 28, 05:25 UTCMay 28, 06:45 UTC1h 20m
2026-05-27 RYR44GP MAN → MXP May 27, 19:25 UTCMay 27, 21:05 UTC1h 40m
2026-05-27 RYR60SF MXP → MAN May 27, 16:50 UTCMay 27, 18:35 UTC1h 45m
2026-05-27 RYR70ED AHO → MXP May 27, 15:05 UTCMay 27, 15:55 UTC50m
2026-05-27 RYR66GL CTA → MXP May 27, 13:20 UTCMay 27, 14:10 UTC50m
2026-05-27 RYR65CN MAN → MXP May 27, 10:10 UTCMay 27, 12:05 UTC1h 55m
2026-05-27 RYR3VT PMO → BGY May 27, 07:40 UTCMay 27, 09:20 UTC1h 40m
2026-05-27 RYR2TY MAN → DUB May 27, 05:40 UTCMay 27, 06:34 UTC55m
2026-05-27 RYR2WX NCL → DUB May 27, 04:04 UTCMay 27, 04:59 UTC55m
2026-05-26 RYR5BA HAM → GDN May 26, 14:24 UTCMay 26, 20:50 UTC6h 25m
2026-05-26 RYR65CN MAN → MXP May 26, 11:05 UTCMay 26, 12:54 UTC1h 50m
2026-05-26 RYR3VT PMO → BGY May 26, 08:24 UTCMay 26, 09:59 UTC1h 35m
2026-05-26 RYR5CN GRO → FMM May 26, 06:20 UTCMay 26, 07:34 UTC1h 15m
2026-05-26 RYR7VA LBA → OTP May 26, 04:10 UTCMay 26, 05:34 UTC1h 25m
2026-05-25 RYR3TJ GOT → GDN May 25, 20:50 UTCMay 25, 22:10 UTC1h 20m
2026-05-25 RYR14KP - May 25, 18:35 UTCMay 25, 20:09 UTC1h 34m
2026-05-25 RYR6FG RAK → XCR May 25, 16:25 UTCMay 25, 17:40 UTC1h 15m
2026-05-25 RYR7MC KTW → STN May 25, 14:10 UTCMay 25, 15:35 UTC1h 25m
2026-05-25 RYR11QJ LIS → BHX May 25, 11:30 UTCMay 25, 13:15 UTC1h 45m
2026-05-25 RYR73PQ MXP → MAD May 25, 08:15 UTCMay 25, 09:55 UTC1h 40m
2026-05-25 RYR5XE PMI → BOD May 25, 05:40 UTCMay 25, 06:35 UTC55m
2026-05-25 RYR83AU LPA → SCQ May 25, 04:05 UTCMay 25, 05:00 UTC55m
2026-05-24 RYR46UC CAG → MXP May 24, 20:20 UTCMay 24, 21:15 UTC55m
2026-05-24 RYR5WD MAD → DUB May 24, 18:25 UTCMay 24, 19:20 UTC55m
2026-05-24 RYR6TZ AGP → LPL May 24, 15:00 UTCMay 24, 17:15 UTC2h 15m
2026-05-24 RYR53QQ MXP → AGP May 24, 11:35 UTCMay 24, 13:40 UTC2h 5m
2026-05-24 RYR672N MAD → MXP May 24, 08:35 UTCMay 24, 10:15 UTC1h 40m
2026-05-24 RYR8249 MXP → MAD May 24, 05:20 UTCMay 24, 07:00 UTC1h 40m
2026-05-23 RYR13GV TIA → MXP May 23, 23:05 UTCMay 24, 00:25 UTC1h 20m
2026-05-23 RYR16NJ MXP → TIA May 23, 20:40 UTCMay 23, 22:00 UTC1h 20m
2026-05-23 RYR4QJ CRL → TNG May 23, 18:30 UTCMay 23, 19:30 UTC1h 0m
2026-05-23 RYR9TK CGN → SVQ May 23, 16:25 UTCMay 23, 17:30 UTC1h 5m
2026-05-23 RYR2VC ARN → RIX May 23, 13:20 UTCMay 23, 15:15 UTC1h 55m
2026-05-23 RYR12MM LGW → DUB May 23, 11:15 UTCMay 23, 12:05 UTC50m
2026-05-23 RYR28JB DUB → LGW May 23, 09:10 UTCMay 23, 10:10 UTC1h 0m
2026-05-23 RYR19FC KRK → DUB May 23, 07:35 UTCMay 23, 08:20 UTC45m
2026-05-23 RYR66LN DUB → EDI May 23, 05:55 UTCMay 23, 06:40 UTC45m

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

Mode-S 4CA6FB frequently asked

What is Mode-S code 4CA6FB?
4CA6FB is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-DYX.
Where is Mode-S 4CA6FB registered?
Mode-S code 4CA6FB is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CA6FB broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CA6FB, octal 23123373, decimal 5,023,483.
What flights does 4CA6FB operate?
Mode-S 4CA6FB has broadcast 20 distinct callsigns, including RYR5AD, RYR28SP, RYR88DL, RYR8868, RYR55MM.