Apparatus

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sensors Mode-S transponder

4CAE83

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-FFB · BOEING 737-800

Hex
4CAE83
Octal
23127203
Decimal
5,025,411
Country
IE
Tail
EI-FFB
Type
B738
No current signal · last broadcast 1h ago
Flights observed
119
Distinct callsigns
20
Country
IE
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 4CAE83.

Country allocation

The ICAO 24-bit address 4CAE83 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
TFL2AD Arkefly 12 2026-06-08
TFL2TY - 9 2026-06-05
TFL8FA Arkefly 6 2026-06-04
TFL9MC Arkefly 4 2026-06-02
TFL8PH Arkefly 4 2026-06-02
TFL7NB Arkefly 4 2026-06-02
TFL7DK Arkefly 4 2026-06-02
TFL2JH Arkefly 4 2026-05-31
TFL16N Arkefly 4 2026-05-31
TFL7FD - 3 2026-05-30
TFL63A Arkefly 3 2026-05-27
TFL62X - 3 2026-05-30
TFL53A Arkefly 3 2026-06-07
TFL4DM Arkefly 3 2026-05-30
TFL3DB Arkefly 3 2026-06-06
TFL2KC Arkefly 3 2026-05-27
TFL2CY - 3 2026-05-30
TFL9LE Arkefly 2 2026-06-03
TFL97M Arkefly 2 2026-05-29
TFL7VN - 2 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-08 TFL2AD AMS → BJV Jun 8, 20:10 UTCJun 8, 22:45 UTC2h 35m
2026-06-08 TFL2AD AMS → BJV Jun 8, 18:20 UTCJun 8, 18:35 UTC15m
2026-06-08 TFL2AD AMS → BJV Jun 8, 13:55 UTCJun 8, 17:05 UTC3h 10m
2026-06-08 TFL6KB AMS → TFS Jun 8, 09:05 UTCJun 8, 11:35 UTC2h 30m
2026-06-08 TFL3GJ AMS → OHD Jun 8, 05:50 UTCJun 8, 07:40 UTC1h 50m
2026-06-07 TFL63W ACE → AMS Jun 7, 16:10 UTCJun 7, 20:05 UTC3h 55m
2026-06-07 TFL53A AMS → ACE Jun 7, 11:10 UTCJun 7, 15:00 UTC3h 50m
2026-06-06 TFL3DB AYT → AMS Jun 6, 13:34 UTCJun 6, 14:40 UTC1h 5m
2026-06-06 TFL3DB AYT → AMS Jun 6, 11:14 UTCJun 6, 13:30 UTC2h 15m
2026-06-06 TFL3NA AMS → AYT Jun 6, 05:55 UTCJun 6, 08:55 UTC3h 0m
2026-06-05 TFL2TY - Jun 5, 12:35 UTCJun 5, 15:55 UTC3h 20m
2026-06-05 TFL2TY - Jun 5, 10:45 UTCJun 5, 11:15 UTC30m
2026-06-05 TFL2TY - Jun 5, 05:35 UTCJun 5, 08:55 UTC3h 20m
2026-06-04 TFL8FA RMF → AMS Jun 4, 07:25 UTCJun 4, 18:50 UTC11h 25m
2026-06-03 TFL65L LPA → AMS Jun 3, 10:55 UTCJun 3, 15:00 UTC4h 5m
2026-06-03 TFL9LE AMS → LPA Jun 3, 05:20 UTCJun 3, 09:30 UTC4h 10m
2026-06-02 TFL9MC AYT → AMS Jun 2, 20:30 UTCJun 3, 00:15 UTC3h 45m
2026-06-02 TFL8PH RTM → AYT Jun 2, 15:35 UTCJun 2, 19:05 UTC3h 30m
2026-06-02 TFL7DK AYT → RTM Jun 2, 10:20 UTCJun 2, 14:05 UTC3h 45m
2026-06-02 TFL7NB AMS → AYT Jun 2, 05:30 UTCJun 2, 08:50 UTC3h 20m
2026-06-01 TFL8VM HER → AMS Jun 1, 20:00 UTCJun 1, 23:25 UTC3h 25m
2026-06-01 TFL6DY - Jun 1, 15:50 UTCJun 1, 18:40 UTC2h 50m
2026-06-01 TFL2NB KGS → AMS Jun 1, 10:05 UTCJun 1, 13:30 UTC3h 25m
2026-06-01 TFL5TX AMS → KGS Jun 1, 05:35 UTCJun 1, 08:40 UTC3h 5m
2026-05-31 TFL2JH HER → AMS May 31, 11:55 UTCMay 31, 15:15 UTC3h 20m
2026-05-31 TFL16N AMS → HER May 31, 08:25 UTCMay 31, 10:30 UTC2h 5m
2026-05-30 TFL62X RHO → AMS May 30, 20:25 UTCMay 31, 00:05 UTC3h 40m
2026-05-30 TFL4DM AMS → RHO May 30, 15:50 UTCMay 30, 19:10 UTC3h 20m
2026-05-30 TFL2CY - May 30, 09:40 UTCMay 30, 13:00 UTC3h 20m
2026-05-30 TFL7FD - May 30, 05:25 UTCMay 30, 08:10 UTC2h 45m
2026-05-29 TFL97M TFS → AMS May 29, 15:25 UTCMay 29, 19:25 UTC4h 1m
2026-05-29 TFL7VN - May 29, 09:45 UTCMay 29, 13:20 UTC3h 35m
2026-05-28 TFL8FA RMF → AMS May 28, 07:10 UTCMay 28, 18:35 UTC11h 25m
2026-05-27 TFL63A DLM → AMS May 27, 11:05 UTCMay 27, 14:40 UTC3h 35m
2026-05-27 TFL2KC AMS → DLM May 27, 06:20 UTCMay 27, 09:30 UTC3h 10m
2026-05-26 TFL9MC AYT → AMS May 26, 20:54 UTCMay 27, 00:30 UTC3h 35m
2026-05-26 TFL8PH RTM → AYT May 26, 15:29 UTCMay 26, 19:30 UTC4h 0m
2026-05-26 TFL7DK AYT → RTM May 26, 11:00 UTCMay 26, 14:40 UTC3h 40m
2026-05-26 TFL7NB AMS → AYT May 26, 05:49 UTCMay 26, 09:29 UTC3h 40m
2026-05-25 TFL4KA TFS → EIN May 25, 10:30 UTCMay 25, 13:45 UTC3h 15m
2026-05-25 TFL32N AMS → AOK May 25, 05:55 UTCMay 25, 09:05 UTC3h 10m
2026-05-24 TFL2JH HER → AMS May 24, 11:50 UTCMay 24, 15:00 UTC3h 10m
2026-05-24 TFL16N AMS → HER May 24, 07:05 UTCMay 24, 10:20 UTC3h 15m
2026-05-23 TFL62X RHO → AMS May 23, 20:40 UTCMay 24, 00:05 UTC3h 25m
2026-05-23 TFL4DM AMS → RHO May 23, 15:55 UTCMay 23, 19:15 UTC3h 20m
2026-05-23 TFL2CY - May 23, 10:30 UTCMay 23, 13:35 UTC3h 5m
2026-05-23 TFL7FD - May 23, 05:45 UTCMay 23, 08:40 UTC2h 55m
2026-05-22 TFL2TY - May 22, 12:25 UTCMay 22, 15:50 UTC3h 25m
2026-05-22 TFL2TY - May 22, 10:35 UTCMay 22, 11:20 UTC44m
2026-05-22 TFL2TY - May 22, 05:45 UTCMay 22, 09:10 UTC3h 25m

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

Mode-S 4CAE83 frequently asked

What is Mode-S code 4CAE83?
4CAE83 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-FFB.
Where is Mode-S 4CAE83 registered?
Mode-S code 4CAE83 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAE83 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 4CAE83, octal 23127203, decimal 5,025,411.
What flights does 4CAE83 operate?
Mode-S 4CAE83 has broadcast 20 distinct callsigns, including TFL2AD, TFL2TY, TFL8FA, TFL9MC, TFL8PH.