Apparatus

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sensors Mode-S transponder

4CA4F4

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-DPP · BOEING 737-800

Hex
4CA4F4
Octal
23122364
Decimal
5,022,964
Country
IE
Tail
EI-DPP
Type
B738
No current signal · last broadcast Jul 26, 22:40 UTC
Flights observed
678
Distinct callsigns
20
Country
IE
Last broadcast
Jul 26, 22:40 UTC

Last known position

Most recent position reported by Mode-S 4CA4F4.

Country allocation

The ICAO 24-bit address 4CA4F4 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
RYR7YX - 12 2026-06-23
RYR559X - 12 2026-06-23
RYR33TU - 10 2026-06-19
RYR15DT - 10 2026-06-19
RYR6JW Ryanair 8 2026-06-19
RYR274F - 8 2026-06-19
RYR45TL - 7 2026-06-22
RYR2WH - 7 2026-06-22
RYR7PF Ryanair 4 2026-06-17
RYR4YM - 4 2026-06-17
RYR9023 - 3 2026-06-21
RYR818V Ryanair 3 2026-05-01
RYR76UD Ryanair 3 2026-04-22
RYR75TJ - 3 2026-07-06
RYR63FB Ryanair 3 2026-05-28
RYR5WR Ryanair 3 2026-07-24
RYR59JH Ryanair 3 2026-04-29
RYR52TV - 3 2026-06-23
RYR526B - 3 2026-07-04
RYR50GF - 3 2026-06-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RYR7LG OPO → SNN Jul 26, 21:45 UTCJul 26, 22:40 UTC55m
2026-07-26 RYR30KW PSA → BDS Jul 26, 19:50 UTCJul 26, 20:35 UTC45m
2026-07-26 RYR716U PRG → PSA Jul 26, 17:45 UTCJul 26, 18:55 UTC1h 10m
2026-07-26 RYR19SG CDT → STN Jul 26, 15:45 UTCJul 26, 17:00 UTC1h 15m
2026-07-26 RYR49RQ TIA → PSA Jul 26, 13:05 UTCJul 26, 14:25 UTC1h 20m
2026-07-26 RYR6UD PSA → TIA Jul 26, 10:25 UTCJul 26, 11:20 UTC55m
2026-07-26 RYR20UU ALC → LPL Jul 26, 07:55 UTCJul 26, 09:20 UTC1h 25m
2026-07-26 RYR2KK RAK → DLE Jul 26, 05:40 UTCJul 26, 07:05 UTC1h 26m
2026-07-25 RYR5RZ AGP → BVA Jul 25, 21:00 UTCJul 25, 22:30 UTC1h 30m
2026-07-25 RYR7276 - Jul 25, 17:30 UTCJul 25, 19:35 UTC2h 5m
2026-07-25 RYR7LG OPO → SNN Jul 25, 14:55 UTCJul 25, 16:00 UTC1h 5m
2026-07-25 RYR30KW PSA → BDS Jul 25, 13:00 UTCJul 25, 13:55 UTC55m
2026-07-25 RYR159L MLA → PSA Jul 25, 10:30 UTCJul 25, 11:55 UTC1h 25m
2026-07-25 RYR9JL NOC → FAO Jul 25, 08:45 UTCJul 25, 09:25 UTC40m
2026-07-25 RYR7295 MLA → CAG Jul 25, 06:30 UTCJul 25, 07:20 UTC50m
2026-07-24 RYR3T DUB → BOH Jul 24, 22:25 UTCJul 24, 22:50 UTC25m
2026-07-24 RYR395 MLA → CTA Jul 24, 21:00 UTCJul 24, 21:30 UTC30m
2026-07-24 RYR9534 FMM → MLA Jul 24, 18:20 UTCJul 24, 20:05 UTC1h 45m
2026-07-24 RYR9535 MLA → FMM Jul 24, 15:35 UTCJul 24, 17:35 UTC2h 0m
2026-07-24 RYR3KH TFS → BGY Jul 24, 13:50 UTCJul 24, 14:45 UTC55m
2026-07-24 RYR7839 LNZ → BRI Jul 24, 10:40 UTCJul 24, 11:40 UTC1h 0m
2026-07-24 RYR7838 BRI → LNZ Jul 24, 08:30 UTCJul 24, 09:55 UTC1h 25m
2026-07-24 RYR10TB GOA → BRI Jul 24, 06:10 UTCJul 24, 07:35 UTC1h 25m
2026-07-24 RYR5WR PFO → EIN Jul 24, 03:55 UTCJul 24, 05:10 UTC1h 15m
2026-07-23 RYR83BZ CRL → BRI Jul 23, 20:10 UTCJul 23, 21:55 UTC1h 45m
2026-07-23 RYR6FC STN → BER Jul 23, 17:15 UTCJul 23, 19:20 UTC2h 5m
2026-07-23 RYR95AT DUB → LPA Jul 23, 15:35 UTCJul 23, 16:20 UTC45m
2026-07-23 RYR5ZL BRI → VCE Jul 23, 13:35 UTCJul 23, 14:40 UTC1h 5m
2026-07-23 RYR2PK - Jul 23, 11:10 UTCJul 23, 12:30 UTC1h 20m
2026-07-23 RYR10ZJ BRI → NUE Jul 23, 08:20 UTCJul 23, 10:00 UTC1h 40m
2026-07-23 RYR59GQ TRN → BRI Jul 23, 06:00 UTCJul 23, 07:10 UTC1h 10m
2026-07-23 RYR48WU BRI → TRN Jul 23, 03:55 UTCJul 23, 05:20 UTC1h 25m
2026-07-22 RYR1217 POZ → BRI Jul 22, 20:30 UTCJul 22, 22:10 UTC1h 40m
2026-07-22 RYR1216 BRI → POZ Jul 22, 18:00 UTCJul 22, 19:45 UTC1h 45m
2026-07-22 RYR7975 KGS → BRI Jul 22, 15:35 UTCJul 22, 17:10 UTC1h 35m
2026-07-22 RYR7LT ZAG → DUB Jul 22, 12:45 UTCJul 22, 14:05 UTC1h 20m
2026-07-22 RYR9536 BBU → BRI Jul 22, 11:10 UTCJul 22, 11:40 UTC30m
2026-07-22 RYR5WR PFO → EIN Jul 22, 03:55 UTCJul 22, 05:05 UTC1h 10m
2026-07-22 RYR4074 AHO → BRI Jul 22, 00:30 UTCJul 22, 01:25 UTC55m
2026-07-21 RYR4073 BRI → AHO Jul 21, 22:35 UTCJul 21, 23:45 UTC1h 10m
2026-07-21 RYR241F - Jul 21, 20:25 UTCJul 21, 21:15 UTC50m
2026-07-21 RYR408P - Jul 21, 16:40 UTCJul 21, 17:25 UTC45m
2026-07-21 RYR1161 KUN → BRI Jul 21, 12:55 UTCJul 21, 14:45 UTC1h 50m
2026-07-21 RYR18DF BRI → KUN Jul 21, 09:55 UTCJul 21, 12:05 UTC2h 10m
2026-07-21 RYR59GQ TRN → BRI Jul 21, 07:25 UTCJul 21, 08:35 UTC1h 10m
2026-07-21 RYR48WU BRI → TRN Jul 21, 05:10 UTCJul 21, 06:30 UTC1h 20m
2026-07-20 RYR3DE - Jul 20, 22:10 UTCJul 20, 23:05 UTC55m
2026-07-20 RYR28ZB - Jul 20, 20:15 UTCJul 20, 21:20 UTC1h 5m
2026-07-20 RYR79FR ALC → BRI Jul 20, 17:20 UTCJul 20, 19:10 UTC1h 50m
2026-07-20 RYR5HH MRS → SNN Jul 20, 14:10 UTCJul 20, 16:40 UTC2h 30m

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

Mode-S 4CA4F4 frequently asked

What is Mode-S code 4CA4F4?
4CA4F4 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-DPP.
Where is Mode-S 4CA4F4 registered?
Mode-S code 4CA4F4 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CA4F4 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CA4F4, octal 23122364, decimal 5,022,964.
What flights does 4CA4F4 operate?
Mode-S 4CA4F4 has broadcast 20 distinct callsigns, including RYR7YX, RYR559X, RYR33TU, RYR15DT, RYR6JW.