Apparatus

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sensors Mode-S transponder

4CA8D6

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-ENK · BOEING 737-800

Hex
4CA8D6
Octal
23124326
Decimal
5,023,958
Country
IE
Tail
EI-ENK
Type
B738
No current signal · last broadcast 6h ago
Flights observed
279
Distinct callsigns
20
Country
IE
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 4CA8D6.

Country allocation

The ICAO 24-bit address 4CA8D6 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
RYR533D Ryanair 9 2026-04-20
RYR97ZH Ryanair 7 2026-04-20
RYR8DY Ryanair 4 2026-04-16
RYR89DJ - 4 2026-04-19
RYR7VV Ryanair 4 2026-04-19
RYR3053 Ryanair 4 2026-04-20
RYR8QZ Ryanair 3 2026-05-28
RYR8ER Ryanair 3 2026-05-25
RYR89SN Ryanair 3 2026-05-04
RYR771X Ryanair 3 2026-05-04
RYR75YL Ryanair 3 2026-05-26
RYR74CC Ryanair 3 2026-05-26
RYR7028 Ryanair 3 2026-04-17
RYR7027 Ryanair 3 2026-04-17
RYR54LC Ryanair 3 2026-04-16
RYR520K Ryanair 3 2026-05-28
RYR3H Ryanair 3 2026-04-18
RYR34ZD Ryanair 3 2026-05-25
RYR2AN - 3 2026-04-13
RYR26UL Ryanair 3 2026-04-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 RYR79EH BUD → BLQ May 29, 20:55 UTCMay 29, 22:05 UTC1h 10m
2026-05-29 RYR5GV BLQ → TIA May 29, 19:10 UTCMay 29, 20:10 UTC1h 0m
2026-05-29 RYR67WB VIE → BLQ May 29, 17:30 UTCMay 29, 18:20 UTC50m
2026-05-29 RYR8FZ BRI → MAD May 29, 15:40 UTCMay 29, 16:35 UTC55m
2026-05-29 RYR6EW MAD → IBZ May 29, 11:20 UTCMay 29, 12:55 UTC1h 35m
2026-05-29 RYR822J BLQ → MLA May 29, 09:05 UTCMay 29, 10:25 UTC1h 20m
2026-05-29 RYR9LZ LBA → FUE May 29, 07:00 UTCMay 29, 08:10 UTC1h 10m
2026-05-29 RYR32FX BLQ → BDS May 29, 05:15 UTCMay 29, 06:15 UTC1h 0m
2026-05-28 RYR8QZ STN → DUB May 28, 21:50 UTCMay 28, 23:20 UTC1h 30m
2026-05-28 RYR520K ZAG → CRL May 28, 19:30 UTCMay 28, 21:00 UTC1h 30m
2026-05-28 RYR6017 ATH → BLQ May 28, 16:40 UTCMay 28, 18:35 UTC1h 55m
2026-05-28 RYR42HR BLQ → ATH May 28, 13:55 UTCMay 28, 15:40 UTC1h 45m
2026-05-28 RYR2FL EDI → NOC May 28, 11:10 UTCMay 28, 12:35 UTC1h 25m
2026-05-28 RYR47YB BLQ → CTA May 28, 09:00 UTCMay 28, 10:10 UTC1h 10m
2026-05-28 RYR17UZ FCO → DUB May 28, 06:35 UTCMay 28, 07:55 UTC1h 20m
2026-05-28 RYR36HD BLQ → BCN May 28, 04:15 UTCMay 28, 05:25 UTC1h 10m
2026-05-27 RYR89VJ VIE → BGY May 27, 21:55 UTCMay 27, 23:00 UTC1h 5m
2026-05-27 RYR13ZB STN → HHN May 27, 19:45 UTCMay 27, 20:50 UTC1h 5m
2026-05-27 RYR4JJ ATH → BLQ May 27, 16:55 UTCMay 27, 18:40 UTC1h 45m
2026-05-27 RYR6053 BLQ → ATH May 27, 14:15 UTCMay 27, 16:05 UTC1h 50m
2026-05-27 RYR8QZ STN → DUB May 27, 11:20 UTCMay 27, 12:55 UTC1h 35m
2026-05-27 RYR520K ZAG → CRL May 27, 08:50 UTCMay 27, 10:20 UTC1h 30m
2026-05-27 RYR18EV VLC → BRU May 27, 06:20 UTCMay 27, 07:50 UTC1h 31m
2026-05-27 RYR2YD BLQ → SKG May 27, 03:59 UTCMay 27, 05:29 UTC1h 30m
2026-05-26 RYR7CJ AGP → STN May 26, 21:34 UTCMay 26, 22:39 UTC1h 5m
2026-05-26 RYR4PK PSA → DUB May 26, 19:40 UTCMay 26, 20:45 UTC1h 5m
2026-05-26 RYR74CC BDS → BLQ May 26, 17:44 UTCMay 26, 18:45 UTC1h 0m
2026-05-26 RYR75YL BLQ → BDS May 26, 15:49 UTCMay 26, 16:55 UTC1h 5m
2026-05-26 RYR4VL WMI → TSF May 26, 13:24 UTCMay 26, 14:30 UTC1h 5m
2026-05-26 RYR8XK STN → SNN May 26, 11:20 UTCMay 26, 12:24 UTC1h 5m
2026-05-26 RYR11CP BER → BLQ May 26, 07:59 UTCMay 26, 09:19 UTC1h 20m
2026-05-26 RYR91ZT BLQ → BER May 26, 05:49 UTCMay 26, 07:10 UTC1h 20m
2026-05-25 RYR7DE CFU → VRN May 25, 21:40 UTCMay 25, 22:19 UTC40m
2026-05-25 RYR6507 BLQ → OLB May 25, 19:54 UTCMay 25, 20:34 UTC40m
2026-05-25 RYR34ZD BGY → BHX May 25, 17:50 UTCMay 25, 19:10 UTC1h 20m
2026-05-25 RYR8ER DUB → STN May 25, 15:40 UTCMay 25, 17:05 UTC1h 25m
2026-05-25 RYR78LL VLC → BLQ May 25, 11:35 UTCMay 25, 13:20 UTC1h 45m
2026-05-25 RYR91KF BLQ → VLC May 25, 08:20 UTCMay 25, 10:00 UTC1h 40m
2026-05-25 RYR81BC BCN → BHX May 25, 06:10 UTCMay 25, 07:30 UTC1h 20m
2026-05-25 RYR8BF TPS → BLQ May 25, 03:50 UTCMay 25, 05:05 UTC1h 15m
2026-05-24 RYR34ZD BGY → BHX May 24, 18:00 UTCMay 24, 19:15 UTC1h 15m
2026-05-24 RYR10XW REU → EIN May 24, 15:25 UTCMay 24, 17:10 UTC1h 45m
2026-05-24 RYR425M EIN → REU May 24, 12:25 UTCMay 24, 14:10 UTC1h 45m
2026-05-24 RYR8ER DUB → STN May 24, 09:25 UTCMay 24, 10:50 UTC1h 25m
2026-05-24 RYR5QY OTP → BLQ May 24, 06:25 UTCMay 24, 08:05 UTC1h 40m
2026-05-24 RYR4RA MRS → TNG May 24, 04:00 UTCMay 24, 05:40 UTC1h 40m
2026-05-23 RYR1VY AGP → STN May 23, 18:20 UTCMay 23, 19:30 UTC1h 10m
2026-05-23 RYR4353 - May 23, 16:25 UTCMay 23, 17:20 UTC55m
2026-05-23 RYR665R ARN → BLQ May 23, 13:10 UTCMay 23, 15:25 UTC2h 15m
2026-05-23 RYR8PZ BUD → BGY May 23, 09:55 UTCMay 23, 12:20 UTC2h 25m

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

Mode-S 4CA8D6 frequently asked

What is Mode-S code 4CA8D6?
4CA8D6 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-ENK.
Where is Mode-S 4CA8D6 registered?
Mode-S code 4CA8D6 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CA8D6 broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CA8D6, octal 23124326, decimal 5,023,958.
What flights does 4CA8D6 operate?
Mode-S 4CA8D6 has broadcast 20 distinct callsigns, including RYR533D, RYR97ZH, RYR8DY, RYR89DJ, RYR7VV.