Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4CADFF

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-IHT · BOEING 737 MAX 8

Hex
4CADFF
Octal
23126777
Decimal
5,025,279
Country
IE
Tail
EI-IHT
Type
B38M
No current signal · last broadcast 1h ago
Flights observed
283
Distinct callsigns
20
Country
IE
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 4CADFF.

Country allocation

The ICAO 24-bit address 4CADFF 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
RYR5325 - 3 2026-04-15
RYR34QP Ryanair 3 2026-05-27
RYR9UQ Ryanair 2 2026-04-15
RYR9MX Ryanair 2 2026-05-20
RYR9KB Ryanair 2 2026-05-10
RYR98LA Ryanair 2 2026-05-26
RYR96TN Ryanair 2 2026-05-10
RYR9319 - 2 2026-04-16
RYR89HU Ryanair 2 2026-05-23
RYR87DH - 2 2026-04-13
RYR7ZL Ryanair 2 2026-04-17
RYR7HN Ryanair 2 2026-04-15
RYR7919 - 2 2026-05-08
RYR72TB - 2 2026-04-14
RYR7132 - 2 2026-04-17
RYR70LT Ryanair 2 2026-05-24
RYR70GJ Ryanair 2 2026-05-26
RYR6ZU - 2 2026-04-15
RYR6FJ Ryanair 2 2026-04-30
RYR69WA - 2 2026-04-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 RYR66XX AGP → DUB May 30, 09:55 UTCMay 30, 11:45 UTC1h 50m
2026-05-30 RYR61FP DUB → AGP May 30, 05:55 UTCMay 30, 08:30 UTC2h 35m
2026-05-29 RYR38LU NAP → DUB May 29, 21:35 UTCMay 30, 00:20 UTC2h 45m
2026-05-29 RYR96VH DUB → NAP May 29, 17:40 UTCMay 29, 20:20 UTC2h 40m
2026-05-29 RYR662E NQY → DUB May 29, 15:50 UTCMay 29, 16:25 UTC35m
2026-05-29 RYR5XB NUE → FNC May 29, 14:05 UTCMay 29, 14:50 UTC45m
2026-05-29 RYR53UX VLC → EDI May 29, 10:20 UTCMay 29, 13:10 UTC2h 50m
2026-05-29 RYR7XY TIA → NRN May 29, 06:05 UTCMay 29, 08:35 UTC2h 30m
2026-05-28 RYR8EG VRN → DUB May 28, 22:10 UTCMay 29, 00:35 UTC2h 25m
2026-05-28 RYR31EK DUB → PMI May 28, 18:50 UTCMay 28, 21:05 UTC2h 15m
2026-05-28 RYR51YC LTN → DUB May 28, 16:50 UTCMay 28, 17:35 UTC45m
2026-05-28 RYR86DX NRN → NDR May 28, 15:05 UTCMay 28, 15:50 UTC45m
2026-05-28 RYR986M CAG → DUB May 28, 11:05 UTCMay 28, 14:00 UTC2h 55m
2026-05-28 RYR33RX DUB → CAG May 28, 06:30 UTCMay 28, 09:00 UTC2h 30m
2026-05-27 RYR34QP BRS → DUB May 27, 20:05 UTCMay 27, 20:50 UTC45m
2026-05-27 RYR6NL REU → BHX May 27, 17:10 UTCMay 27, 19:15 UTC2h 5m
2026-05-27 RYR4FQ TRS → BER May 27, 13:25 UTCMay 27, 15:35 UTC2h 10m
2026-05-27 RYR94WE - May 27, 09:05 UTCMay 27, 12:00 UTC2h 55m
2026-05-27 RYR26ZP - May 27, 05:24 UTCMay 27, 08:00 UTC2h 35m
2026-05-26 RYR562G LPL → TFS May 26, 22:09 UTCMay 26, 23:49 UTC1h 40m
2026-05-26 RYR70GJ BRS → PRG May 26, 19:25 UTCMay 26, 21:04 UTC1h 40m
2026-05-26 RYR64QE BCN → BRS May 26, 15:54 UTCMay 26, 17:39 UTC1h 45m
2026-05-26 RYR98LA BRS → BCN May 26, 13:04 UTCMay 26, 14:50 UTC1h 45m
2026-05-26 RYR20KX PMI → BRS May 26, 09:59 UTCMay 26, 11:50 UTC1h 50m
2026-05-26 RYR35TJ DUB → LBA May 26, 06:49 UTCMay 26, 08:54 UTC2h 5m
2026-05-25 RYR64QE BCN → BRS May 25, 19:59 UTCMay 25, 21:40 UTC1h 40m
2026-05-25 RYR98LA BRS → BCN May 25, 16:55 UTCMay 25, 18:55 UTC2h 0m
2026-05-25 RYR445T CPH → BRS May 25, 14:20 UTCMay 25, 16:10 UTC1h 50m
2026-05-25 RYR6RM ALC → EDI May 25, 11:50 UTCMay 25, 13:20 UTC1h 30m
2026-05-25 RYR2CF NRN → GRO May 25, 08:30 UTCMay 25, 10:35 UTC2h 5m
2026-05-25 RYR25XC BRS → AGP May 25, 05:00 UTCMay 25, 07:20 UTC2h 20m
2026-05-24 RYR18GP MAD → BRS May 24, 20:30 UTCMay 24, 21:45 UTC1h 15m
2026-05-24 RYR76RT BRS → MAD May 24, 17:35 UTCMay 24, 19:15 UTC1h 40m
2026-05-24 RYR562G LPL → TFS May 24, 15:10 UTCMay 24, 16:50 UTC1h 40m
2026-05-24 RYR70GJ BRS → PRG May 24, 11:45 UTCMay 24, 13:30 UTC1h 45m
2026-05-24 RYR70LT IBZ → BRS May 24, 08:10 UTCMay 24, 10:10 UTC2h 0m
2026-05-24 RYR25WC VRN → STN May 24, 04:45 UTCMay 24, 06:50 UTC2h 5m
2026-05-23 RYR29KP DUB → BVA May 23, 22:55 UTCMay 23, 23:35 UTC40m
2026-05-23 RYR13KJ BRS → DUB May 23, 21:30 UTCMay 23, 22:10 UTC40m
2026-05-23 RYR337L DUB → BRS May 23, 20:05 UTCMay 23, 20:45 UTC40m
2026-05-23 RYR34QP BRS → DUB May 23, 18:45 UTCMay 23, 19:20 UTC35m
2026-05-23 RYR89HU AGP → BRS May 23, 15:40 UTCMay 23, 17:55 UTC2h 15m
2026-05-23 RYR439L BRS → AGP May 23, 12:15 UTCMay 23, 14:35 UTC2h 20m
2026-05-23 RYR357G RZE → BRS May 23, 08:40 UTCMay 23, 11:00 UTC2h 20m
2026-05-23 RYR6CH BRS → RZE May 23, 05:35 UTCMay 23, 07:55 UTC2h 20m
2026-05-22 RYR337L DUB → BRS May 22, 21:30 UTCMay 22, 22:10 UTC40m
2026-05-22 RYR34QP BRS → DUB May 22, 20:00 UTCMay 22, 20:35 UTC35m
2026-05-22 RYR70LT IBZ → BRS May 22, 17:10 UTCMay 22, 19:10 UTC2h 0m
2026-05-22 RYR25WC VRN → STN May 22, 13:40 UTCMay 22, 16:00 UTC2h 20m
2026-05-22 RYR13FK OTP → BRS May 22, 09:20 UTCMay 22, 12:20 UTC3h 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-IHT page for operator, model, and routing details .

Mode-S 4CADFF frequently asked

What is Mode-S code 4CADFF?
4CADFF is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-IHT.
Where is Mode-S 4CADFF registered?
Mode-S code 4CADFF is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CADFF broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CADFF, octal 23126777, decimal 5,025,279.
What flights does 4CADFF operate?
Mode-S 4CADFF has broadcast 20 distinct callsigns, including RYR5325, RYR34QP, RYR9UQ, RYR9MX, RYR9KB.