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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
Broadcasting now · callsign RYR8XC · 37,000 ft
Flights observed
669
Distinct callsigns
20
Country
IE
Last broadcast
Jul 26, 22:30 UTC

Current position

4CA88C is currently broadcasting. Map zoomed to live position.

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
RYR6HL Ryanair 5 2026-07-26
RYR60PR Ryanair 5 2026-07-26
RYR4PN Ryanair 5 2026-07-26
RYR3UR Ryanair 5 2026-07-26
RYR9WD - 4 2026-04-15
RYR50AM Ryanair 4 2026-04-27
RYR4726 - 4 2026-06-22
RYR1XQ - 4 2026-06-22
RYR77ZD - 3 2026-06-21
RYR76UD - 3 2026-06-24
RYR6BN Ryanair 3 2026-04-27
RYR5GE Ryanair 3 2026-04-15
RYR2ZX - 3 2026-06-24
RYR2ZA - 3 2026-07-17
RYR1AE - 3 2026-07-17
RYR9VP Ryanair 2 2026-04-16
RYR9LR Ryanair 2 2026-05-19
RYR9GR Ryanair 2 2026-06-15
RYR97YQ Ryanair 2 2026-07-24
RYR97MQ Ryanair 2 2026-05-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RYR1ZW FEZ → BGY Jul 26, 21:15 UTCJul 26, 22:30 UTC1h 15m
2026-07-26 RYR5427 TRS → PMO Jul 26, 18:45 UTCJul 26, 19:55 UTC1h 10m
2026-07-26 RYR60PR BRI → TRS Jul 26, 16:55 UTCJul 26, 17:55 UTC1h 0m
2026-07-26 RYR6HL DUB → CRL Jul 26, 14:55 UTCJul 26, 15:55 UTC1h 0m
2026-07-26 RYR3UR CTA → VCE Jul 26, 13:00 UTCJul 26, 14:10 UTC1h 10m
2026-07-26 RYR4PN TLL → BGY Jul 26, 10:15 UTCJul 26, 11:40 UTC1h 25m
2026-07-26 RYR78ZG BDS → TRS Jul 26, 07:45 UTCJul 26, 08:55 UTC1h 10m
2026-07-26 RYR4WD BLQ → STN Jul 26, 05:50 UTCJul 26, 06:50 UTC1h 1m
2026-07-25 RYR2426 SVQ → TRS Jul 25, 19:50 UTCJul 25, 22:05 UTC2h 15m
2026-07-25 RYR2427 TRS → SVQ Jul 25, 16:10 UTCJul 25, 19:05 UTC2h 55m
2026-07-25 RYR3UR CTA → VCE Jul 25, 13:25 UTCJul 25, 14:40 UTC1h 15m
2026-07-25 RYR4PN TLL → BGY Jul 25, 11:20 UTCJul 25, 12:20 UTC1h 0m
2026-07-25 RYR8742 ARN → TRS Jul 25, 08:10 UTCJul 25, 10:15 UTC2h 5m
2026-07-25 RYR8743 BGY → BER Jul 25, 04:55 UTCJul 25, 07:10 UTC2h 15m
2026-07-24 RYR83SL PRG → KRK Jul 24, 20:45 UTCJul 24, 21:35 UTC50m
2026-07-24 RYR70QN TRS → OLB Jul 24, 18:45 UTCJul 24, 19:40 UTC55m
2026-07-24 RYR78HC BCN → TRS Jul 24, 16:35 UTCJul 24, 18:00 UTC1h 25m
2026-07-24 RYR94VL TRS → BCN Jul 24, 13:55 UTCJul 24, 15:30 UTC1h 35m
2026-07-24 RYR96ZJ BER → DUB Jul 24, 11:30 UTCJul 24, 12:40 UTC1h 10m
2026-07-24 RYR97YQ PSA → PRG Jul 24, 09:20 UTCJul 24, 10:15 UTC55m
2026-07-24 RYR17PY CTA → TRS Jul 24, 06:45 UTCJul 24, 08:20 UTC1h 35m
2026-07-24 RYR89NK TRS → CTA Jul 24, 04:35 UTCJul 24, 05:45 UTC1h 10m
2026-07-23 RYR60PR BRI → TRS Jul 23, 20:10 UTCJul 23, 21:10 UTC1h 0m
2026-07-23 RYR6HL DUB → CRL Jul 23, 18:15 UTCJul 23, 19:10 UTC55m
2026-07-23 RYR34DC - Jul 23, 16:20 UTCJul 23, 17:35 UTC1h 15m
2026-07-23 RYR978N - Jul 23, 14:05 UTCJul 23, 15:30 UTC1h 25m
2026-07-23 RYR78HC BCN → TRS Jul 23, 11:45 UTCJul 23, 13:10 UTC1h 25m
2026-07-23 RYR94VL TRS → BCN Jul 23, 08:40 UTCJul 23, 10:20 UTC1h 40m
2026-07-23 RYR907P TIA → TRS Jul 23, 06:40 UTCJul 23, 07:40 UTC1h 0m
2026-07-23 RYR5649 MRS → EDI Jul 23, 04:35 UTCJul 23, 05:20 UTC45m
2026-07-22 RYR83SL PRG → KRK Jul 22, 21:10 UTCJul 22, 22:00 UTC50m
2026-07-22 RYR70QN - Jul 22, 19:25 UTCJul 22, 20:20 UTC55m
2026-07-22 RYR99ZG - Jul 22, 17:10 UTCJul 22, 18:45 UTC1h 35m
2026-07-22 RYR7LU - Jul 22, 12:35 UTCJul 22, 15:10 UTC2h 35m
2026-07-22 RYR27LQ STN → RMU Jul 22, 10:20 UTCJul 22, 11:40 UTC1h 20m
2026-07-21 RYR9TX - Jul 21, 17:15 UTCJul 21, 20:45 UTC3h 30m
2026-07-21 RYR42MV STN → LPA Jul 21, 12:00 UTCJul 21, 15:45 UTC3h 45m
2026-07-21 RUK85XY OSL → STN Jul 21, 09:20 UTCJul 21, 11:00 UTC1h 40m
2026-07-21 RUK417H STN → OSL Jul 21, 06:30 UTCJul 21, 08:15 UTC1h 45m
2026-07-20 RYR799 VCE → STN Jul 20, 22:40 UTCJul 21, 00:25 UTC1h 45m
2026-07-20 RYR19GL STN → VCE Jul 20, 20:10 UTCJul 20, 21:40 UTC1h 30m
2026-07-20 RYR3BW DUB → STN Jul 20, 18:30 UTCJul 20, 19:20 UTC50m
2026-07-20 RYR3LC - Jul 20, 16:40 UTCJul 20, 17:30 UTC50m
2026-07-20 RYR1BL SUF → TRS Jul 20, 13:30 UTCJul 20, 15:10 UTC1h 40m
2026-07-20 RYR87SW - Jul 20, 11:05 UTCJul 20, 12:30 UTC1h 25m
2026-07-20 RYR55MM - Jul 20, 08:10 UTCJul 20, 10:05 UTC1h 55m
2026-07-20 RYR1CA MRS → FCO Jul 20, 05:40 UTCJul 20, 07:20 UTC1h 40m
2026-07-19 RUK7E AGA → STN Jul 19, 18:30 UTCJul 19, 21:15 UTC2h 45m
2026-07-19 RUK39KF - Jul 19, 13:40 UTCJul 19, 16:55 UTC3h 15m
2026-07-19 RUK31RP - Jul 19, 11:25 UTCJul 19, 12:30 UTC1h 5m

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?
Yes. Mode-S 4CA88C is currently airborne.
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 RYR6HL, RYR60PR, RYR4PN, RYR3UR, RYR9WD.