Apparatus

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sensors Mode-S transponder

4CA9D2

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-EVJ · BOEING 737-800

Hex
4CA9D2
Octal
23124722
Decimal
5,024,210
Country
IE
Tail
EI-EVJ
Type
B738
Broadcasting now · callsign RYR5YD · 23,675 ft
Flights observed
305
Distinct callsigns
20
Country
IE
Last broadcast
7h ago

Current position

4CA9D2 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4CA9D2 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
RYR3NR Ryanair 5 2026-04-17
RYR2PQ Ryanair 5 2026-04-17
RYR5495 - 4 2026-04-17
RYR966P Ryanair 3 2026-04-14
RYR78QQ - 3 2026-04-13
RYR65XA Ryanair 3 2026-05-23
RYR59HM Ryanair 3 2026-04-27
RYR1EP Ryanair 3 2026-04-27
RYR9GB - 2 2026-04-13
RYR9964 - 2 2026-04-17
RYR97DM Ryanair 2 2026-04-18
RYR96QQ Ryanair 2 2026-05-29
RYR90UU Ryanair 2 2026-04-28
RYR82SK Ryanair 2 2026-05-23
RYR7JZ Ryanair 2 2026-05-01
RYR7DE Ryanair 2 2026-05-28
RYR779 Ryanair 2 2026-04-16
RYR6DY Ryanair 2 2026-04-29
RYR6507 Ryanair 2 2026-05-28
RYR63DQ Ryanair 2 2026-05-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 RYR9JP MAN → RMU May 29, 20:20 UTCMay 29, 21:30 UTC1h 10m
2026-05-29 RYR11HV LGW → DUB May 29, 18:00 UTCMay 29, 19:00 UTC1h 0m
2026-05-29 RYR38EN HER → BLQ May 29, 14:55 UTCMay 29, 17:00 UTC2h 5m
2026-05-29 RYR96QQ BLQ → HER May 29, 12:00 UTCMay 29, 13:50 UTC1h 50m
2026-05-29 RYR5G OPO → STN May 29, 07:55 UTCMay 29, 10:10 UTC2h 15m
2026-05-29 RYR13VP WRO → TGD May 29, 04:15 UTCMay 29, 06:30 UTC2h 15m
2026-05-28 RYR1YW VIE → OPO May 28, 22:15 UTCMay 28, 23:25 UTC1h 10m
2026-05-28 RYR61PH BLQ → SUF May 28, 20:20 UTCMay 28, 21:30 UTC1h 10m
2026-05-28 RYR9BJ CPH → BLQ May 28, 17:35 UTCMay 28, 19:15 UTC1h 40m
2026-05-28 RYR6ZE BLQ → CPH May 28, 14:55 UTCMay 28, 16:40 UTC1h 45m
2026-05-28 RYR38EN HER → BLQ May 28, 10:20 UTCMay 28, 12:25 UTC2h 5m
2026-05-28 RYR96QQ BLQ → HER May 28, 07:25 UTCMay 28, 09:25 UTC2h 0m
2026-05-28 RYR7DE CFU → VRN May 28, 05:55 UTCMay 28, 06:40 UTC45m
2026-05-28 RYR6507 BLQ → OLB May 28, 03:45 UTCMay 28, 04:25 UTC40m
2026-05-27 RYR3HB CAG → FKB May 27, 20:15 UTCMay 27, 21:35 UTC1h 20m
2026-05-27 RYR3RU CRL → OPO May 27, 18:00 UTCMay 27, 19:10 UTC1h 10m
2026-05-27 RYR44BA MRS → BLQ May 27, 15:45 UTCMay 27, 16:40 UTC55m
2026-05-27 RYR2BU FNI → CRL May 27, 14:05 UTCMay 27, 15:05 UTC1h 0m
2026-05-27 RYR4RA MRS → TNG May 27, 08:40 UTCMay 27, 10:10 UTC1h 30m
2026-05-27 RYR55BJ GDN → ARN May 27, 06:29 UTCMay 27, 07:45 UTC1h 15m
2026-05-27 RYR119T PED → ALC May 27, 03:50 UTCMay 27, 05:09 UTC1h 20m
2026-05-26 RYR7DE CFU → VRN May 26, 22:25 UTCMay 26, 23:10 UTC45m
2026-05-26 RYR6507 BLQ → OLB May 26, 20:54 UTCMay 26, 21:29 UTC35m
2026-05-26 RYR51GK VLC → BLQ May 26, 18:30 UTCMay 26, 20:00 UTC1h 30m
2026-05-26 RYR68SX BLQ → VLC May 26, 15:54 UTCMay 26, 17:25 UTC1h 30m
2026-05-26 RYR25FL DUB → BLQ May 26, 12:30 UTCMay 26, 14:45 UTC2h 15m
2026-05-26 RYR63DQ STN → WRO May 26, 08:59 UTCMay 26, 11:20 UTC2h 20m
2026-05-26 RYR89EQ CAG → BLQ May 26, 07:05 UTCMay 26, 07:55 UTC50m
2026-05-26 RYR62QT BLQ → CAG May 26, 05:10 UTCMay 26, 05:54 UTC45m
2026-05-25 RYR25FL DUB → BLQ May 25, 19:05 UTCMay 25, 21:15 UTC2h 10m
2026-05-25 RYR63DQ STN → WRO May 25, 15:35 UTCMay 25, 17:55 UTC2h 20m
2026-05-25 RYR18EV VLC → BRU May 25, 11:30 UTCMay 25, 13:00 UTC1h 30m
2026-05-25 RYR2YD BLQ → SKG May 25, 09:00 UTCMay 25, 10:40 UTC1h 40m
2026-05-25 RYR31QC MLA → BLQ May 25, 06:15 UTCMay 25, 07:55 UTC1h 40m
2026-05-25 RYR6JX CIA → LPL May 25, 04:00 UTCMay 25, 05:20 UTC1h 20m
2026-05-24 RYR709E RAK → BCN May 24, 20:10 UTCMay 24, 21:45 UTC1h 35m
2026-05-24 RYR48NP BLQ → STN May 24, 17:35 UTCMay 24, 19:20 UTC1h 45m
2026-05-24 RYR3925 SDR → BLQ May 24, 15:00 UTCMay 24, 16:45 UTC1h 45m
2026-05-24 RYR9135 WRO → SNN May 24, 12:25 UTCMay 24, 14:05 UTC1h 40m
2026-05-24 RYR4769 VIE → BLQ May 24, 09:55 UTCMay 24, 10:50 UTC55m
2026-05-24 RYR67PF BLQ → VIE May 24, 08:00 UTCMay 24, 08:55 UTC55m
2026-05-24 RYR9LZ LBA → FUE May 24, 05:45 UTCMay 24, 06:50 UTC1h 5m
2026-05-24 RYR32FX BLQ → BDS May 24, 03:45 UTCMay 24, 04:55 UTC1h 10m
2026-05-23 RYR420Z LIS → BLQ May 23, 19:30 UTCMay 23, 21:50 UTC2h 20m
2026-05-23 RYR67UV TRN → BDS May 23, 14:45 UTCMay 23, 17:25 UTC2h 40m
2026-05-23 RYR65XA STN → BLQ May 23, 12:05 UTCMay 23, 13:45 UTC1h 40m
2026-05-23 RYR82SK VIE → BCN May 23, 08:50 UTCMay 23, 11:00 UTC2h 10m
2026-05-23 RYR3GM PMI → NUE May 23, 05:55 UTCMay 23, 07:55 UTC2h 0m
2026-05-22 RYR70XA BUD → STN May 22, 21:20 UTCMay 22, 23:25 UTC2h 5m
2026-05-22 RYR36AQ STN → BUD May 22, 18:35 UTCMay 22, 20:30 UTC1h 55m

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

Mode-S 4CA9D2 frequently asked

What is Mode-S code 4CA9D2?
4CA9D2 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-EVJ.
Where is Mode-S 4CA9D2 registered?
Mode-S code 4CA9D2 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CA9D2 broadcasting right now?
Yes. Mode-S 4CA9D2 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CA9D2, octal 23124722, decimal 5,024,210.
What flights does 4CA9D2 operate?
Mode-S 4CA9D2 has broadcast 20 distinct callsigns, including RYR3NR, RYR2PQ, RYR5495, RYR966P, RYR78QQ.