Apparatus

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sensors Mode-S transponder

4CA73E

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-EBW · BOEING 737-800

Hex
4CA73E
Octal
23123476
Decimal
5,023,550
Country
IE
Tail
EI-EBW
Type
B738
No current signal · last broadcast 3h ago
Flights observed
517
Distinct callsigns
20
Country
IE
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 4CA73E.

Country allocation

The ICAO 24-bit address 4CA73E 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
RYR7VH - 4 2026-07-01
RYR6AX Ryanair 4 2026-05-31
RYR3GY Ryanair 4 2026-04-15
RYR16UD - 4 2026-04-15
RYR9WD Ryanair 3 2026-06-19
RYR6TB - 3 2026-07-01
RYR573Q Ryanair 3 2026-04-28
RYR48BF Ryanair 3 2026-04-14
RYR46VZ Ryanair 3 2026-05-30
RYR39DE Ryanair 3 2026-04-17
RYR31QZ Ryanair 3 2026-05-30
RYR15RL Ryanair 3 2026-05-30
RUK99LL Ryanair UK 3 2026-04-29
RUK6223 Ryanair UK 3 2026-04-29
RUK5TH Ryanair UK 3 2026-04-29
RYR9PJ Ryanair 2 2026-05-09
RYR99LX Ryanair 2 2026-05-07
RYR97VJ - 2 2026-04-14
RYR96SR - 2 2026-06-26
RYR8LW Ryanair 2 2026-05-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 RYR92EQ - Jul 14, 22:05 UTCJul 14, 22:55 UTC49m
2026-07-14 RYR3986 - Jul 14, 20:00 UTCJul 14, 21:00 UTC1h 0m
2026-07-14 RYR8NH - Jul 14, 16:55 UTCJul 14, 19:20 UTC2h 25m
2026-07-14 RYR7MV - Jul 14, 13:50 UTCJul 14, 15:55 UTC2h 5m
2026-07-14 RYR633K - Jul 14, 11:05 UTCJul 14, 11:55 UTC50m
2026-07-14 RYR99NC - Jul 14, 09:20 UTCJul 14, 10:10 UTC50m
2026-07-14 RYR5QY - Jul 14, 06:25 UTCJul 14, 08:10 UTC1h 45m
2026-07-14 RYR4RA BLQ → OTP Jul 14, 03:50 UTCJul 14, 05:25 UTC1h 35m
2026-07-13 RYR20XE - Jul 13, 21:40 UTCJul 13, 23:00 UTC1h 20m
2026-07-13 RYR14XT - Jul 13, 19:25 UTCJul 13, 20:35 UTC1h 10m
2026-07-13 RYR5QY - Jul 13, 16:40 UTCJul 13, 18:30 UTC1h 50m
2026-07-13 RYR4RA BLQ → OTP Jul 13, 14:15 UTCJul 13, 15:50 UTC1h 35m
2026-07-13 RYR5MH - Jul 13, 11:40 UTCJul 13, 12:45 UTC1h 5m
2026-07-13 RYR28SK - Jul 13, 10:05 UTCJul 13, 11:00 UTC55m
2026-07-13 RYR709E - Jul 13, 07:10 UTCJul 13, 08:45 UTC1h 35m
2026-07-12 RUK3YJ - Jul 12, 23:00 UTCJul 13, 01:15 UTC2h 15m
2026-07-12 RUK6EC - Jul 12, 19:01 UTCJul 12, 21:45 UTC2h 45m
2026-07-12 RUK90RG - Jul 12, 10:10 UTCJul 12, 17:35 UTC7h 25m
2026-07-12 RYR7CQ PRG → STN Jul 12, 07:35 UTCJul 12, 09:05 UTC1h 30m
2026-07-12 RYR11GQ STN → PRG Jul 12, 05:05 UTCJul 12, 06:35 UTC1h 30m
2026-07-11 RUK7872 - Jul 11, 18:00 UTCJul 12, 01:00 UTC7h 0m
2026-07-11 RYR200Z LIS → STN Jul 11, 13:40 UTCJul 11, 15:55 UTC2h 15m
2026-07-11 RYR95SN - Jul 11, 09:40 UTCJul 11, 11:55 UTC2h 15m
2026-07-11 RYR743Z - Jul 11, 07:05 UTCJul 11, 08:35 UTC1h 30m
2026-07-10 RYR64AL MLA → MXP Jul 10, 20:55 UTCJul 10, 22:35 UTC1h 40m
2026-07-10 RYR1FU MXP → MLA Jul 10, 18:25 UTCJul 10, 20:10 UTC1h 45m
2026-07-10 RYR24GM - Jul 10, 16:00 UTCJul 10, 17:15 UTC1h 15m
2026-07-10 RYR7LY - Jul 10, 13:45 UTCJul 10, 14:55 UTC1h 10m
2026-07-10 RYR5CN - Jul 10, 10:50 UTCJul 10, 12:20 UTC1h 30m
2026-07-10 RYR7VA - Jul 10, 08:45 UTCJul 10, 09:50 UTC1h 5m
2026-07-10 RYR4SP - Jul 10, 06:15 UTCJul 10, 07:40 UTC1h 25m
2026-07-10 RYR743Z MXP → STN Jul 10, 03:55 UTCJul 10, 05:25 UTC1h 30m
2026-07-09 RYR10NG - Jul 9, 21:45 UTCJul 9, 23:30 UTC1h 45m
2026-07-09 RYR687L - Jul 9, 18:50 UTCJul 9, 20:10 UTC1h 20m
2026-07-09 RYR814P - Jul 9, 16:35 UTCJul 9, 17:25 UTC50m
2026-07-09 RYR3SZ FAO → VLC Jul 9, 14:55 UTCJul 9, 15:40 UTC45m
2026-07-09 RYR5U - Jul 9, 12:00 UTCJul 9, 13:05 UTC1h 5m
2026-07-09 RYR801W - Jul 9, 09:15 UTCJul 9, 10:25 UTC1h 10m
2026-07-09 RYR161N BCN → MXP Jul 9, 06:30 UTCJul 9, 07:40 UTC1h 10m
2026-07-09 RYR72NK MXP → BCN Jul 9, 03:45 UTCJul 9, 04:50 UTC1h 5m
2026-07-08 RYR2FF - Jul 8, 21:45 UTCJul 8, 23:25 UTC1h 40m
2026-07-08 RYR1FE EIN → STN Jul 8, 19:40 UTCJul 8, 20:25 UTC45m
2026-07-08 RYR4XC - Jul 8, 18:10 UTCJul 8, 18:50 UTC40m
2026-07-08 RYR4PY OPO → STN Jul 8, 15:25 UTCJul 8, 17:20 UTC1h 55m
2026-07-08 RYR84GX - Jul 8, 12:30 UTCJul 8, 14:30 UTC2h 0m
2026-07-08 RYR7GR EIN → STN Jul 8, 10:25 UTCJul 8, 11:10 UTC45m
2026-07-08 RYR7PC - Jul 8, 09:00 UTCJul 8, 09:40 UTC40m
2026-07-08 RYR9898 - Jul 8, 07:10 UTCJul 8, 08:10 UTC1h 0m
2026-07-07 RYR5054 - Jul 7, 15:20 UTCJul 7, 17:10 UTC1h 50m
2026-07-07 RYR36TZ - Jul 7, 10:50 UTCJul 7, 13:05 UTC2h 15m

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

Mode-S 4CA73E frequently asked

What is Mode-S code 4CA73E?
4CA73E is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-EBW.
Where is Mode-S 4CA73E registered?
Mode-S code 4CA73E is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CA73E broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CA73E, octal 23123476, decimal 5,023,550.
What flights does 4CA73E operate?
Mode-S 4CA73E has broadcast 20 distinct callsigns, including RYR7VH, RYR6AX, RYR3GY, RYR16UD, RYR9WD.