Apparatus

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sensors Mode-S transponder

4CA9C1

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-EVA · BOEING 737-800

Hex
4CA9C1
Octal
23124701
Decimal
5,024,193
Country
IE
Tail
EI-EVA
Type
B738
Broadcasting now · callsign RYR47CJ · 37,000 ft
Flights observed
731
Distinct callsigns
20
Country
IE
Last broadcast
Jul 26, 22:15 UTC

Current position

4CA9C1 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4CA9C1 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
RYR4PN - 23 2026-06-28
RYR3UR - 23 2026-06-28
RYR89NK - 17 2026-06-29
RYR70QN Ryanair 17 2026-06-23
RYR83SL - 16 2026-06-23
RYR17PY - 16 2026-06-23
RYR9RA - 14 2026-06-26
RYR39ED - 14 2026-06-26
RYR6HL - 13 2026-06-28
RYR60PR - 13 2026-06-28
RYR99ZG - 10 2026-06-27
RYR27JN - 10 2026-06-27
RYR97YQ - 9 2026-06-29
RYR96ZJ - 9 2026-06-29
RYR78ZG - 9 2026-06-28
RYR78HC - 9 2026-06-19
RYR4WD - 9 2026-06-28
RYR33EL - 9 2026-06-23
RYR94VL Ryanair 8 2026-06-19
RYR907P - 8 2026-06-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 RYR8223 GOT → PRG Jul 26, 21:35 UTCJul 26, 22:15 UTC40m
2026-07-26 RYR8WD MAN → LPA Jul 26, 19:30 UTCJul 26, 20:35 UTC1h 5m
2026-07-26 RYR7TZ MAH → NCL Jul 26, 17:25 UTCJul 26, 18:15 UTC50m
2026-07-26 RYR9G BVA → FAO Jul 26, 15:35 UTCJul 26, 16:25 UTC50m
2026-07-26 RYR17CY LBA → ACE Jul 26, 10:55 UTCJul 26, 14:15 UTC3h 20m
2026-07-26 RYR5WV BLL → PSA Jul 26, 06:20 UTCJul 26, 09:45 UTC3h 26m
2026-07-25 RYR48YA STN → MAD Jul 25, 17:50 UTCJul 25, 19:35 UTC1h 45m
2026-07-25 RYR13YB MAD → STN Jul 25, 15:05 UTCJul 25, 17:00 UTC1h 55m
2026-07-25 RYR4BV VCE → HEL Jul 25, 12:00 UTCJul 25, 12:50 UTC50m
2026-07-25 RYR421P MAD → OPO Jul 25, 10:25 UTCJul 25, 11:15 UTC50m
2026-07-25 RYR36TZ CRL → MAD Jul 25, 07:15 UTCJul 25, 09:10 UTC1h 55m
2026-07-24 RYR816C RAK → CRL Jul 24, 17:40 UTCJul 24, 20:30 UTC2h 50m
2026-07-24 RYR54FF CRL → RAK Jul 24, 13:10 UTCJul 24, 16:05 UTC2h 55m
2026-07-24 RYR8AU BZG → STN Jul 24, 10:10 UTCJul 24, 11:50 UTC1h 40m
2026-07-24 RYR29KK MAH → MAD Jul 24, 07:30 UTCJul 24, 08:40 UTC1h 10m
2026-07-24 RYR36GA MAD → MAH Jul 24, 05:30 UTCJul 24, 06:30 UTC1h 0m
2026-07-23 RYR1ZK GOT → BGY Jul 23, 20:50 UTCJul 23, 21:50 UTC1h 0m
2026-07-23 RYR12GP MAN → ALC Jul 23, 19:05 UTCJul 23, 19:55 UTC50m
2026-07-23 RYR31JD PRG → MAD Jul 23, 15:30 UTCJul 23, 17:55 UTC2h 25m
2026-07-23 RYR83RW MAD → PRG Jul 23, 12:25 UTCJul 23, 14:50 UTC2h 25m
2026-07-23 RYR65DE - Jul 23, 04:55 UTCJul 23, 10:25 UTC5h 30m
2026-07-22 RYR33NR MAH → MAD Jul 22, 21:45 UTCJul 22, 22:55 UTC1h 10m
2026-07-22 RYR2FT - Jul 22, 20:00 UTCJul 22, 21:00 UTC1h 0m
2026-07-22 RYR17BM - Jul 22, 14:40 UTCJul 22, 18:55 UTC4h 15m
2026-07-22 RYR77WP PMI → MAD Jul 22, 12:10 UTCJul 22, 13:05 UTC55m
2026-07-22 RYR36HP - Jul 22, 04:25 UTCJul 22, 05:25 UTC1h 0m
2026-07-21 RYR3008 MXP → MAD Jul 21, 23:25 UTCJul 22, 01:15 UTC1h 50m
2026-07-21 RYR1HK BGY → LIS Jul 21, 20:50 UTCJul 21, 22:25 UTC1h 35m
2026-07-21 RYR7TZ MAH → NCL Jul 21, 18:35 UTCJul 21, 19:25 UTC50m
2026-07-21 RYR9G BVA → FAO Jul 21, 10:05 UTCJul 21, 10:50 UTC45m
2026-07-20 RYR4295 - Jul 20, 19:05 UTCJul 20, 20:25 UTC1h 20m
2026-07-20 RYR8RL - Jul 20, 17:00 UTCJul 20, 18:00 UTC1h 0m
2026-07-20 RYR77QE - Jul 20, 13:35 UTCJul 20, 15:10 UTC1h 35m
2026-07-20 RYR6116 - Jul 20, 11:10 UTCJul 20, 12:20 UTC1h 10m
2026-07-20 RYR29DB BRU → MAD Jul 20, 07:20 UTCJul 20, 09:15 UTC1h 55m
2026-07-20 RYR2AA VIE → BLL Jul 20, 04:25 UTCJul 20, 06:10 UTC1h 45m
2026-07-19 RYR1XG CRL → WMI Jul 19, 20:00 UTCJul 19, 21:35 UTC1h 35m
2026-07-19 RYR56XL - Jul 19, 17:40 UTCJul 19, 19:00 UTC1h 20m
2026-07-19 RYR17BM - Jul 19, 11:40 UTCJul 19, 16:15 UTC4h 35m
2026-07-19 RYR908N BLQ → MAD Jul 19, 07:55 UTCJul 19, 09:55 UTC2h 0m
2026-07-19 RYR2Z PMO → BLQ Jul 19, 05:50 UTCJul 19, 06:55 UTC1h 5m
2026-07-19 RYR5RC - Jul 19, 03:55 UTCJul 19, 05:00 UTC1h 5m
2026-07-18 RYR8QZ IBZ → BLQ Jul 18, 20:40 UTCJul 18, 22:00 UTC1h 20m
2026-07-18 RYR520K - Jul 18, 18:05 UTCJul 18, 19:45 UTC1h 40m
2026-07-18 RYR330H - Jul 18, 15:50 UTCJul 18, 17:15 UTC1h 25m
2026-07-18 RYR21AQ BLQ → KRK Jul 18, 13:45 UTCJul 18, 15:05 UTC1h 20m
2026-07-18 RYR5DJ AGP → BLQ Jul 18, 07:45 UTCJul 18, 09:45 UTC2h 0m
2026-07-18 RYR8932 BLQ → AGP Jul 18, 04:00 UTCJul 18, 06:20 UTC2h 20m
2026-07-17 RYR1YW - Jul 17, 21:55 UTCJul 17, 23:00 UTC1h 5m
2026-07-17 RYR61PH - Jul 17, 20:04 UTCJul 17, 21:05 UTC1h 0m

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

Mode-S 4CA9C1 frequently asked

What is Mode-S code 4CA9C1?
4CA9C1 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-EVA.
Where is Mode-S 4CA9C1 registered?
Mode-S code 4CA9C1 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CA9C1 broadcasting right now?
Yes. Mode-S 4CA9C1 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CA9C1, octal 23124701, decimal 5,024,193.
What flights does 4CA9C1 operate?
Mode-S 4CA9C1 has broadcast 20 distinct callsigns, including RYR4PN, RYR3UR, RYR89NK, RYR70QN, RYR83SL.