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sensors Mode-S transponder

4CA643

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-DYA · BOEING 737-800

Hex
4CA643
Octal
23123103
Decimal
5,023,299
Country
IE
Tail
EI-DYA
Type
B738
Broadcasting now · callsign RYR46TF · 24,000 ft
Flights observed
613
Distinct callsigns
0
Country
IE
Last broadcast
19m ago

Current position

4CA643 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4CA643 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.

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 RYR46TF - Jul 15, 12:25 UTCJul 15, 12:45 UTC20m
2026-07-15 RYR4SD - Jul 15, 10:30 UTCJul 15, 11:35 UTC1h 5m
2026-07-15 RYR816C - Jul 15, 06:40 UTCJul 15, 09:30 UTC2h 50m
2026-07-14 RYR7AC - Jul 14, 17:20 UTCJul 14, 20:25 UTC3h 5m
2026-07-14 RYR44SX BCN → BRU Jul 14, 10:00 UTCJul 14, 16:00 UTC6h 0m
2026-07-14 RYR89UQ - Jul 14, 06:45 UTCJul 14, 08:35 UTC1h 50m
2026-07-13 RYR1BZ - Jul 13, 22:25 UTCJul 13, 23:50 UTC1h 25m
2026-07-13 RYR1ZK IBZ → MAD Jul 13, 20:00 UTCJul 13, 20:50 UTC50m
2026-07-13 RYR12GP - Jul 13, 18:15 UTCJul 13, 19:00 UTC45m
2026-07-13 RYR84QF - Jul 13, 15:55 UTCJul 13, 17:00 UTC1h 5m
2026-07-13 RYR1YU - Jul 13, 13:15 UTCJul 13, 14:10 UTC55m
2026-07-13 RYR18TX - Jul 13, 08:15 UTCJul 13, 11:50 UTC3h 35m
2026-07-13 RYR6EA - Jul 13, 04:10 UTCJul 13, 07:05 UTC2h 55m
2026-07-12 RYR227G - Jul 12, 20:50 UTCJul 12, 22:40 UTC1h 50m
2026-07-12 RYR158V - Jul 12, 17:25 UTCJul 12, 19:20 UTC1h 55m
2026-07-12 RYR73PQ MXP → MAD Jul 12, 14:15 UTCJul 12, 16:10 UTC1h 55m
2026-07-12 RYR11QJ MAD → MXP Jul 12, 11:25 UTCJul 12, 13:10 UTC1h 45m
2026-07-12 RYR90SF DUB → MAD Jul 12, 07:31 UTCJul 12, 09:30 UTC2h 0m
2026-07-11 RYR93SC LGW → DUB Jul 11, 20:55 UTCJul 11, 21:50 UTC55m
2026-07-11 RYR70SV DUB → LGW Jul 11, 19:00 UTCJul 11, 19:50 UTC50m
2026-07-11 RYR9LY - Jul 11, 15:40 UTCJul 11, 17:50 UTC2h 10m
2026-07-11 RYR43DT DUB → NCE Jul 11, 11:30 UTCJul 11, 13:35 UTC2h 5m
2026-07-11 RYR96SR - Jul 11, 10:00 UTCJul 11, 10:25 UTC25m
2026-07-11 RYR6NY DUB → KIR Jul 11, 08:30 UTCJul 11, 09:10 UTC40m
2026-07-11 RYR2PN - Jul 11, 06:55 UTCJul 11, 07:35 UTC40m
2026-07-11 RYR3B DUB → GLA Jul 11, 05:31 UTCJul 11, 06:05 UTC35m
2026-07-10 RYR72TB NCE → DUB Jul 10, 20:45 UTCJul 10, 22:55 UTC2h 10m
2026-07-10 RYR42QV DUB → NCE Jul 10, 17:25 UTCJul 10, 19:35 UTC2h 10m
2026-07-10 RYR459M - Jul 10, 14:45 UTCJul 10, 15:35 UTC50m
2026-07-10 RYR2SH DUB → EDI Jul 10, 13:10 UTCJul 10, 13:45 UTC35m
2026-07-10 RYR12MM - Jul 10, 11:05 UTCJul 10, 11:55 UTC50m
2026-07-10 RYR28JB DUB → LGW Jul 10, 08:50 UTCJul 10, 09:45 UTC55m
2026-07-10 RYR10EC - Jul 10, 07:10 UTCJul 10, 07:50 UTC40m
2026-07-10 RYR15DY DUB → LBA Jul 10, 05:25 UTCJul 10, 06:05 UTC40m
2026-07-09 RYR214Y - Jul 9, 19:00 UTCJul 9, 21:40 UTC2h 40m
2026-07-09 RYR60WC - Jul 9, 15:45 UTCJul 9, 18:15 UTC2h 30m
2026-07-09 RYR501G - Jul 9, 12:55 UTCJul 9, 14:40 UTC1h 45m
2026-07-09 RYR66KU - Jul 9, 10:00 UTCJul 9, 11:55 UTC1h 55m
2026-07-09 RYR28GL BRS → DUB Jul 9, 08:20 UTCJul 9, 09:05 UTC45m
2026-07-09 RYR57YU - Jul 9, 06:45 UTCJul 9, 07:35 UTC50m
2026-07-08 RYR017 - Jul 8, 20:35 UTCJul 8, 21:15 UTC40m
2026-07-08 RYR9BL DUB → NCL Jul 8, 19:05 UTCJul 8, 19:45 UTC40m
2026-07-08 RYR3QK CPH → STN Jul 8, 16:55 UTCJul 8, 18:10 UTC1h 15m
2026-07-08 RYR83SZ DUB → BRU Jul 8, 14:35 UTCJul 8, 15:55 UTC1h 20m
2026-07-08 RYR165E - Jul 8, 11:10 UTCJul 8, 13:20 UTC2h 10m
2026-07-08 RYR90SF - Jul 8, 07:25 UTCJul 8, 09:35 UTC2h 10m
2026-07-07 RYR34QB LGW → DUB Jul 7, 22:15 UTCJul 7, 23:00 UTC45m
2026-07-07 RYR96HW DUB → LGW Jul 7, 20:30 UTCJul 7, 21:20 UTC50m
2026-07-07 RYR4P FNI → DUB Jul 7, 17:35 UTCJul 7, 19:30 UTC1h 55m
2026-07-07 RYR9776 - Jul 7, 14:40 UTCJul 7, 16:40 UTC2h 0m

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

Mode-S 4CA643 frequently asked

What is Mode-S code 4CA643?
4CA643 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-DYA.
Where is Mode-S 4CA643 registered?
Mode-S code 4CA643 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CA643 broadcasting right now?
Yes. Mode-S 4CA643 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CA643, octal 23123103, decimal 5,023,299.