Apparatus

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sensors Mode-S transponder

4CA8E6

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-ENT · BOEING 737-800

Hex
4CA8E6
Octal
23124346
Decimal
5,023,974
Country
IE
Tail
EI-ENT
Type
B738
Broadcasting now · callsign RYR6616 · 8,950 ft
Flights observed
291
Distinct callsigns
20
Country
IE
Last broadcast
6h ago

Current position

4CA8E6 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4CA8E6 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
RYR5WF Ryanair 4 2026-04-20
RYR3GY Ryanair 4 2026-05-07
RYR16UD Ryanair 4 2026-05-07
RYR100T - 4 2026-05-01
RYR89YN Ryanair 3 2026-05-14
RYR7WU Ryanair 3 2026-04-22
RYR7H Ryanair 3 2026-04-20
RYR56DD Ryanair 3 2026-04-22
RYR4HR Ryanair 3 2026-05-14
RYR22ZU Ryanair 3 2026-04-25
RYR9SU Ryanair 2 2026-04-17
RYR9N Ryanair 2 2026-04-17
RYR96AN Ryanair 2 2026-04-16
RYR95AT Ryanair 2 2026-05-20
RYR90SG Ryanair 2 2026-05-13
RYR8YT - 2 2026-04-17
RYR88PX Ryanair 2 2026-04-17
RYR86EW Ryanair 2 2026-04-14
RYR83XN Ryanair 2 2026-04-26
RYR82AX Ryanair 2 2026-04-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 RYR8SM NWI → ALC May 29, 20:10 UTCMay 29, 22:15 UTC2h 5m
2026-05-29 RYR800 LRH → BGY May 29, 19:00 UTCMay 29, 19:25 UTC25m
2026-05-29 RYR82SK VIE → BCN May 29, 15:30 UTCMay 29, 17:45 UTC2h 15m
2026-05-29 RYR3GM PMI → NUE May 29, 12:15 UTCMay 29, 14:10 UTC1h 55m
2026-05-29 RYR76GA LRH → STN May 29, 10:00 UTCMay 29, 11:00 UTC1h 0m
2026-05-29 RYR484F STN → LRH May 29, 08:05 UTCMay 29, 09:05 UTC1h 0m
2026-05-28 RYR77FR NUE → SKG May 28, 19:55 UTCMay 28, 21:40 UTC1h 45m
2026-05-28 RYR49RX STN → ZAZ May 28, 16:55 UTCMay 28, 18:55 UTC2h 0m
2026-05-28 RYR59DF TFS → STN May 28, 11:40 UTCMay 28, 15:25 UTC3h 45m
2026-05-28 RYR17SD STN → TFS May 28, 06:10 UTCMay 28, 09:55 UTC3h 45m
2026-05-27 RYR85TR CRL → CTA May 27, 20:45 UTCMay 27, 22:45 UTC2h 0m
2026-05-27 RYR1MN TFS → WMI May 27, 17:50 UTCMay 27, 19:40 UTC1h 50m
2026-05-27 RYR2RC FUE → STN May 27, 08:05 UTCMay 27, 16:35 UTC8h 30m
2026-05-27 RYR2DC VIE → SDR May 27, 05:55 UTCMay 27, 06:49 UTC55m
2026-05-26 RYR34QB LGW → DUB May 26, 20:54 UTCMay 26, 21:49 UTC55m
2026-05-26 RYR96HW DUB → LGW May 26, 18:59 UTCMay 26, 19:55 UTC55m
2026-05-26 RYR16YG LGW → DUB May 26, 16:55 UTCMay 26, 17:55 UTC1h 0m
2026-05-26 RYR4JT BRS → WRO May 26, 14:40 UTCMay 26, 15:45 UTC1h 5m
2026-05-26 RYR36ZP VRN → NAP May 26, 09:19 UTCMay 26, 13:10 UTC3h 50m
2026-05-26 RYR51AV DUB → BOJ May 26, 04:50 UTCMay 26, 08:19 UTC3h 30m
2026-05-25 RYR4JL WMI → RHO May 25, 19:05 UTCMay 25, 23:00 UTC3h 55m
2026-05-25 RYR86FK OTP → TSF May 25, 13:55 UTCMay 25, 17:55 UTC4h 0m
2026-05-25 RYR60LN CCF → DUB May 25, 09:30 UTCMay 25, 11:20 UTC1h 50m
2026-05-25 RYR90RJ PSA → BDS May 25, 06:40 UTCMay 25, 08:35 UTC1h 55m
2026-05-24 RYR93SC PEG → STN May 24, 21:25 UTCMay 24, 21:45 UTC20m
2026-05-24 RYR70SV DUB → LGW May 24, 19:45 UTCMay 24, 20:40 UTC55m
2026-05-24 RYR45KP LGW → DUB May 24, 18:00 UTCMay 24, 18:50 UTC50m
2026-05-24 RYR61SV DUB → LGW May 24, 15:35 UTCMay 24, 16:40 UTC1h 5m
2026-05-24 RYR3WP NOC → BRS May 24, 09:25 UTCMay 24, 13:00 UTC3h 35m
2026-05-24 RYR631K DUB → SKG May 24, 05:10 UTCMay 24, 08:35 UTC3h 25m
2026-05-23 RYR459M EDI → DUB May 23, 21:00 UTCMay 23, 21:40 UTC40m
2026-05-23 RYR2SH WRO → STN May 23, 19:40 UTCMay 23, 20:15 UTC35m
2026-05-23 RYR8MX MXP → BVA May 23, 14:40 UTCMay 23, 18:15 UTC3h 35m
2026-05-23 RYR2BB WRO → AGP May 23, 10:20 UTCMay 23, 13:45 UTC3h 25m
2026-05-23 RYR28GL BRS → DUB May 23, 07:10 UTCMay 23, 07:45 UTC35m
2026-05-23 RYR57YU DUB → BRS May 23, 05:10 UTCMay 23, 05:50 UTC40m
2026-05-22 RYR670D VRN → DUB May 22, 21:45 UTCMay 22, 23:55 UTC2h 10m
2026-05-22 RYR19PR DUB → VRN May 22, 18:45 UTCMay 22, 20:50 UTC2h 5m
2026-05-22 RYR6FH EDI → LIS May 22, 17:05 UTCMay 22, 17:45 UTC40m
2026-05-22 RYR69KF DUB → KIR May 22, 15:45 UTCMay 22, 16:20 UTC35m
2026-05-22 RYR33PC BRS → DUB May 22, 14:00 UTCMay 22, 14:40 UTC40m
2026-05-22 RYR565K DUB → BRS May 22, 12:25 UTCMay 22, 13:15 UTC50m
2026-05-22 RYR96SR KIR → DUB May 22, 09:50 UTCMay 22, 10:30 UTC40m
2026-05-22 RYR6NY FCO → DUB May 22, 08:35 UTCMay 22, 09:10 UTC35m
2026-05-22 RYR19FC KRK → DUB May 22, 06:50 UTCMay 22, 07:40 UTC50m
2026-05-22 RYR66LN DUB → EDI May 22, 05:15 UTCMay 22, 05:55 UTC40m
2026-05-21 RYR72GT KUN → DUB May 21, 20:40 UTCMay 21, 23:35 UTC2h 55m
2026-05-21 RYR65QZ DUB → KUN May 21, 17:25 UTCMay 21, 19:50 UTC2h 25m
2026-05-21 RYR16FR VCE → DUB May 21, 13:55 UTCMay 21, 16:20 UTC2h 25m
2026-05-21 RYR11TG SUF → VCE May 21, 10:45 UTCMay 21, 12:05 UTC1h 20m

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

Mode-S 4CA8E6 frequently asked

What is Mode-S code 4CA8E6?
4CA8E6 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-ENT.
Where is Mode-S 4CA8E6 registered?
Mode-S code 4CA8E6 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CA8E6 broadcasting right now?
Yes. Mode-S 4CA8E6 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CA8E6, octal 23124346, decimal 5,023,974.
What flights does 4CA8E6 operate?
Mode-S 4CA8E6 has broadcast 20 distinct callsigns, including RYR5WF, RYR3GY, RYR16UD, RYR100T, RYR89YN.