Apparatus

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sensors Mode-S transponder

4CA88C

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-ENA · BOEING 737-800

Hex
4CA88C
Octal
23124214
Decimal
5,023,884
Country
IE
Tail
EI-ENA
Type
B738
No current signal · last broadcast 10h ago
Flights observed
291
Distinct callsigns
20
Country
IE
Last broadcast
10h ago

Last known position

Most recent position reported by Mode-S 4CA88C.

Country allocation

The ICAO 24-bit address 4CA88C 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
RYR9WD - 4 2026-04-15
RYR50AM Ryanair 4 2026-04-27
RYR6BN Ryanair 3 2026-04-27
RYR5GE Ryanair 3 2026-04-15
RYR4726 Ryanair 3 2026-04-17
RYR1XQ Ryanair 3 2026-04-17
RYR9VP Ryanair 2 2026-04-16
RYR9LR Ryanair 2 2026-05-19
RYR97MQ Ryanair 2 2026-05-24
RYR95LU Ryanair 2 2026-04-16
RYR9533 - 2 2026-04-15
RYR926T - 2 2026-04-13
RYR91CV Ryanair 2 2026-05-03
RYR8ZZ Ryanair 2 2026-04-17
RYR88SA Ryanair 2 2026-04-16
RYR8334 Ryanair 2 2026-05-04
RYR80HG Ryanair 2 2026-05-07
RYR7401 Ryanair 2 2026-04-29
RYR64GA Ryanair 2 2026-04-16
RYR615 Ryanair 2 2026-04-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 RYR62RA STN → ORK May 29, 16:35 UTCMay 29, 18:50 UTC2h 15m
2026-05-29 RYR1EA BVA → DUB May 29, 13:35 UTCMay 29, 15:45 UTC2h 10m
2026-05-29 RYR6B STN → BUD May 29, 09:30 UTCMay 29, 11:50 UTC2h 20m
2026-05-29 RYR886U CRL → CTA May 29, 06:05 UTCMay 29, 08:15 UTC2h 10m
2026-05-28 RYR7H GOT → GDN May 28, 18:35 UTCMay 28, 19:55 UTC1h 20m
2026-05-28 RYR12YP CRL → VRN May 28, 16:25 UTCMay 28, 17:40 UTC1h 15m
2026-05-28 RYR9HE MAN → MAD May 28, 14:20 UTCMay 28, 15:40 UTC1h 20m
2026-05-28 RYR84MB CRL → CCF May 28, 12:20 UTCMay 28, 13:35 UTC1h 15m
2026-05-28 RYR9QH AMM → WMI May 28, 09:00 UTCMay 28, 11:25 UTC2h 25m
2026-05-28 RYR149K - May 28, 04:50 UTCMay 28, 07:15 UTC2h 25m
2026-05-27 RYR10BZ IBZ → CRL May 27, 18:25 UTCMay 27, 20:20 UTC1h 55m
2026-05-27 RYR7BM BZR → STN May 27, 15:25 UTCMay 27, 17:25 UTC2h 0m
2026-05-27 RYR82AX FNI → CRL May 27, 13:10 UTCMay 27, 14:25 UTC1h 15m
2026-05-27 RYR80TJ CRL → FNI May 27, 11:05 UTCMay 27, 12:15 UTC1h 10m
2026-05-27 RYR10AD BTS → CRL May 27, 07:55 UTCMay 27, 09:30 UTC1h 35m
2026-05-27 RYR2854 BRS → KRK May 27, 05:24 UTCMay 27, 06:44 UTC1h 20m
2026-05-26 RYR5WF LIS → ALC May 26, 18:10 UTCMay 26, 20:15 UTC2h 5m
2026-05-26 RYR3DV LUZ → LTN May 26, 15:00 UTCMay 26, 17:05 UTC2h 5m
2026-05-26 RYR9CY MLA → BHX May 26, 10:29 UTCMay 26, 14:05 UTC3h 35m
2026-05-26 RYR82CM CRL → PFO May 26, 05:15 UTCMay 26, 08:59 UTC3h 45m
2026-05-25 RYR30UP OLB → CRL May 25, 18:35 UTCMay 25, 20:15 UTC1h 39m
2026-05-25 RYR6519 CRL → OLB May 25, 16:00 UTCMay 25, 17:40 UTC1h 40m
2026-05-25 RYR88PX PMI → CRL May 25, 12:55 UTCMay 25, 14:45 UTC1h 50m
2026-05-25 RYR8XC LUX → STN May 25, 09:35 UTCMay 25, 11:20 UTC1h 45m
2026-05-25 RYR869P ORK → BCN May 25, 07:15 UTCMay 25, 08:45 UTC1h 30m
2026-05-25 RYR1ZJ CRL → GRO May 25, 04:55 UTCMay 25, 06:20 UTC1h 25m
2026-05-24 RYR3XJ RMU → BHX May 24, 18:20 UTCMay 24, 19:15 UTC55m
2026-05-24 RYR97MQ CRL → MAN May 24, 16:40 UTCMay 24, 17:30 UTC50m
2026-05-24 RYR29UC OPO → CRL May 24, 13:50 UTCMay 24, 15:50 UTC2h 0m
2026-05-24 RYR51SF CRL → OPO May 24, 11:00 UTCMay 24, 13:00 UTC2h 0m
2026-05-24 RYR6097 LDE → CRL May 24, 07:45 UTCMay 24, 09:05 UTC1h 20m
2026-05-24 RYR68MN CRL → LDE May 24, 05:35 UTCMay 24, 06:45 UTC1h 10m
2026-05-23 RYR3XJ RMU → BHX May 23, 19:15 UTCMay 23, 20:05 UTC50m
2026-05-23 RYR97MQ CRL → MAN May 23, 17:30 UTCMay 23, 18:20 UTC50m
2026-05-23 RYR375C AOI → CRL May 23, 15:00 UTCMay 23, 16:25 UTC1h 25m
2026-05-23 RYR87GN CRL → AOI May 23, 12:45 UTCMay 23, 14:10 UTC1h 25m
2026-05-23 RYR96AN IAS → CRL May 23, 09:10 UTCMay 23, 11:20 UTC2h 10m
2026-05-23 RYR340F CRL → IAS May 23, 05:55 UTCMay 23, 08:05 UTC2h 10m
2026-05-22 RYR2AK BVA → NAP May 22, 18:00 UTCMay 22, 20:30 UTC2h 30m
2026-05-22 RYR4EY CRL → OUD May 22, 14:30 UTCMay 22, 16:50 UTC2h 20m
2026-05-22 RYR838P PSA → CRL May 22, 12:00 UTCMay 22, 13:20 UTC1h 20m
2026-05-22 RYR98XK CRL → PSA May 22, 09:15 UTCMay 22, 10:35 UTC1h 20m
2026-05-22 RYR7WU EIN → DUB May 22, 06:45 UTCMay 22, 07:50 UTC1h 5m
2026-05-22 RYR56DD CRL → TSF May 22, 04:50 UTCMay 22, 06:00 UTC1h 10m
2026-05-21 RYR2CL BLQ → CTA May 21, 20:35 UTCMay 21, 21:35 UTC1h 0m
2026-05-21 RYR52BG CRL → BGY May 21, 18:30 UTCMay 21, 19:35 UTC1h 5m
2026-05-21 RYR29UC OPO → CRL May 21, 15:45 UTCMay 21, 17:35 UTC1h 50m
2026-05-21 RYR61AP BRU → OPO May 21, 11:55 UTCMay 21, 14:05 UTC2h 10m
2026-05-21 RYR78FL OPO → BRU May 21, 08:55 UTCMay 21, 10:55 UTC2h 0m
2026-05-21 RYR8274 FAO → OPO May 21, 07:05 UTCMay 21, 08:00 UTC55m

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

Mode-S 4CA88C frequently asked

What is Mode-S code 4CA88C?
4CA88C is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-ENA.
Where is Mode-S 4CA88C registered?
Mode-S code 4CA88C is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CA88C broadcasting right now?
No active broadcast right now. Last signal was 10h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CA88C, octal 23124214, decimal 5,023,884.
What flights does 4CA88C operate?
Mode-S 4CA88C has broadcast 20 distinct callsigns, including RYR9WD, RYR50AM, RYR6BN, RYR5GE, RYR4726.