Apparatus

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sensors Mode-S transponder

4CA84D

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-EME · BOEING 737-800

Hex
4CA84D
Octal
23124115
Decimal
5,023,821
Country
IE
Tail
EI-EME
Type
B738
No current signal · last broadcast 4h ago
Flights observed
334
Distinct callsigns
20
Country
IE
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 4CA84D.

Country allocation

The ICAO 24-bit address 4CA84D 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
RYR5RC Ryanair 4 2026-05-09
RYR5MH Ryanair 4 2026-05-09
RYR3EM - 4 2026-04-16
RYR2Z Ryanair 4 2026-05-09
RYR28SK Ryanair 4 2026-05-09
RYR9JQ Ryanair 3 2026-05-19
RYR95CH - 3 2026-04-16
RYR8TU Ryanair 3 2026-05-06
RYR8PL Ryanair 3 2026-05-19
RYR53QC Ryanair 3 2026-05-19
RYR354V Ryanair 3 2026-05-19
RYR353 Ryanair 3 2026-04-18
RYR33XW - 3 2026-05-16
RYR26ZV Ryanair 3 2026-05-16
RYR9PG Ryanair 2 2026-04-23
RYR98AR Ryanair 2 2026-04-17
RYR95ND Ryanair 2 2026-04-14
RYR94MC Ryanair 2 2026-05-01
RYR91SP Ryanair 2 2026-04-15
RYR90TA Ryanair 2 2026-04-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 RYR688B BLQ → TPS May 29, 19:40 UTCMay 29, 20:40 UTC1h 0m
2026-05-29 RYR86LD TPS → BLQ May 29, 17:45 UTCMay 29, 18:50 UTC1h 5m
2026-05-29 RYR6236 - May 29, 15:50 UTCMay 29, 16:35 UTC45m
2026-05-29 RYR91AC TPS → BRI May 29, 14:05 UTCMay 29, 14:50 UTC45m
2026-05-29 RYR5PR FCO → TPS May 29, 12:20 UTCMay 29, 12:50 UTC30m
2026-05-29 RYR6DY XCR → RAK May 29, 10:20 UTCMay 29, 11:00 UTC40m
2026-05-29 RYR66WD BTS → TPS May 29, 06:50 UTCMay 29, 08:30 UTC1h 40m
2026-05-29 RYR88WF TPS → BTS May 29, 04:30 UTCMay 29, 06:05 UTC1h 35m
2026-05-28 RYR8924 FCO → TPS May 28, 22:40 UTCMay 28, 23:05 UTC25m
2026-05-28 RYR66ZQ TSF → BLL May 28, 21:00 UTCMay 28, 21:35 UTC35m
2026-05-28 RYR65SB BGY → TPS May 28, 18:50 UTCMay 28, 20:00 UTC1h 10m
2026-05-28 RYR9WA DUB → MAN May 28, 13:30 UTCMay 28, 14:45 UTC1h 15m
2026-05-28 RYR68QK BGY → BCN May 28, 11:10 UTCMay 28, 12:20 UTC1h 10m
2026-05-27 RYR866B EIN → BGY May 27, 18:35 UTCMay 27, 19:45 UTC1h 10m
2026-05-27 RYR19VQ BGY → EIN May 27, 16:35 UTCMay 27, 17:45 UTC1h 10m
2026-05-27 RYR5WN HER → BGY May 27, 09:35 UTCMay 27, 11:45 UTC2h 10m
2026-05-27 RYR6MQ DUB → KGS May 27, 06:15 UTCMay 27, 08:30 UTC2h 15m
2026-05-27 RYR5FZ KRK → VLC May 27, 03:54 UTCMay 27, 04:55 UTC1h 0m
2026-05-26 RYR1FB BCN → BER May 26, 21:49 UTCMay 27, 00:14 UTC2h 25m
2026-05-26 RYR9JJ LPA → OPO May 26, 18:14 UTCMay 26, 20:50 UTC2h 35m
2026-05-26 RYR90TC VIE → CGN May 26, 15:39 UTCMay 26, 16:50 UTC1h 10m
2026-05-26 RYR64YL CGN → VIE May 26, 13:34 UTCMay 26, 14:45 UTC1h 10m
2026-05-26 RYR7788 RAK → DUB May 26, 11:39 UTCMay 26, 12:45 UTC1h 5m
2026-05-26 RYR58SV PFO → BGY May 26, 07:49 UTCMay 26, 10:44 UTC2h 55m
2026-05-26 RYR18FU BGY → PFO May 26, 03:50 UTCMay 26, 06:49 UTC3h 0m
2026-05-25 RYR5DN WMI → STN May 25, 21:45 UTCMay 25, 22:40 UTC55m
2026-05-25 RYR540G BGY → CAG May 25, 19:44 UTCMay 25, 20:40 UTC55m
2026-05-25 RYR18JC PRG → BGY May 25, 17:50 UTCMay 25, 18:50 UTC1h 0m
2026-05-25 RYR6NV STN → TSF May 25, 16:05 UTCMay 25, 17:05 UTC1h 0m
2026-05-25 RYR50ZM ORK → BGY May 25, 12:15 UTCMay 25, 14:30 UTC2h 15m
2026-05-25 RYR87EZ BGY → ORK May 25, 09:30 UTCMay 25, 11:30 UTC2h 0m
2026-05-25 RYR9JX BLQ → MLA May 25, 07:25 UTCMay 25, 08:30 UTC1h 5m
2026-05-25 RYR982M BGY → BRI May 25, 05:25 UTCMay 25, 06:40 UTC1h 15m
2026-05-24 RYR1YJ TFS → MAN May 24, 21:25 UTCMay 24, 21:50 UTC25m
2026-05-24 RYR50UT STN → LPA May 24, 19:15 UTCMay 24, 20:25 UTC1h 10m
2026-05-24 RYR44CH CTA → BGY May 24, 17:00 UTCMay 24, 18:25 UTC1h 25m
2026-05-24 RYR8WW EMA → DUB May 24, 14:35 UTCMay 24, 15:55 UTC1h 20m
2026-05-24 RYR3YU FAO → BER May 24, 11:45 UTCMay 24, 13:35 UTC1h 50m
2026-05-24 RYR2WZ WMI → LIS May 24, 09:00 UTCMay 24, 10:55 UTC1h 55m
2026-05-23 RYR451P HEL → BVA May 23, 21:05 UTCMay 23, 22:40 UTC1h 35m
2026-05-23 RYR394R - May 23, 18:45 UTCMay 23, 20:15 UTC1h 30m
2026-05-23 RYR299G BIQ → BGY May 23, 16:30 UTCMay 23, 17:55 UTC1h 25m
2026-05-23 RYR8821 BGY → BIQ May 23, 14:20 UTCMay 23, 15:40 UTC1h 20m
2026-05-22 RYR8847 RAK → BGY May 22, 17:20 UTCMay 23, 12:40 UTC19h 19m
2026-05-22 RYR8847 RAK → BGY May 22, 16:25 UTCMay 23, 12:40 UTC20h 15m
2026-05-22 RYR33NR MAH → MAD May 22, 13:45 UTCMay 22, 14:45 UTC1h 0m
2026-05-22 RYR2FT OPO → VLC May 22, 11:45 UTCMay 22, 12:50 UTC1h 5m
2026-05-22 RYR908N BLQ → MAD May 22, 07:20 UTCMay 22, 09:10 UTC1h 50m
2026-05-22 RYR88NB MAD → BLQ May 22, 04:45 UTCMay 22, 06:35 UTC1h 50m
2026-05-21 RYR7UY BRS → DUB May 21, 21:50 UTCMay 21, 22:35 UTC45m

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

Mode-S 4CA84D frequently asked

What is Mode-S code 4CA84D?
4CA84D is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-EME.
Where is Mode-S 4CA84D registered?
Mode-S code 4CA84D is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CA84D broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CA84D, octal 23124115, decimal 5,023,821.
What flights does 4CA84D operate?
Mode-S 4CA84D has broadcast 20 distinct callsigns, including RYR5RC, RYR5MH, RYR3EM, RYR2Z, RYR28SK.