Apparatus

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sensors Mode-S transponder

4CA6D6

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-FNW · BOEING 737-800

Hex
4CA6D6
Octal
23123326
Decimal
5,023,446
Country
IE
Tail
EI-FNW
Type
B738
No current signal · last broadcast 4h ago
Flights observed
85
Distinct callsigns
19
Country
IE
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 4CA6D6.

Country allocation

The ICAO 24-bit address 4CA6D6 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 19 distinct

Callsign Airline Flights Last seen
TAY3BC - 11 2026-05-15
TAY4BC - 10 2026-05-18
TAY1MS - 8 2026-05-13
ABR2961 - 8 2026-07-17
ABR2960 - 8 2026-07-17
TAY9MS ASL Airlines Belgium 7 2026-05-13
BCS95W - 5 2026-07-03
BCS21Q - 5 2026-07-03
BCS32B - 4 2026-07-02
ABR760 - 3 2026-07-14
ABR5961 - 3 2026-06-26
ABR5959 - 3 2026-06-26
ABR737 ASL Airlines Ireland 2 2026-07-06
ABR4074 - 2 2026-06-13
ABR4073 - 2 2026-06-11
ABR771 - 1 2026-07-05
ABR770P - 1 2026-07-06
ABR5868 - 1 2026-06-22
ABR5867 - 1 2026-06-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 ABR2961 - Jul 17, 19:35 UTCJul 17, 21:30 UTC1h 55m
2026-07-17 ABR2960 - Jul 17, 04:04 UTCJul 17, 06:10 UTC2h 5m
2026-07-16 ABR2961 - Jul 16, 18:59 UTCJul 16, 20:55 UTC1h 55m
2026-07-16 ABR2960 LEJ → SNN Jul 16, 02:55 UTCJul 16, 04:55 UTC2h 0m
2026-07-15 ABR2961 - Jul 15, 19:20 UTCJul 15, 21:20 UTC2h 0m
2026-07-15 ABR2960 - Jul 15, 02:50 UTCJul 15, 04:45 UTC1h 55m
2026-07-14 ABR760 - Jul 14, 21:20 UTCJul 14, 23:25 UTC2h 4m
2026-07-11 ABR760 - Jul 11, 12:20 UTCJul 11, 14:30 UTC2h 10m
2026-07-10 ABR2961 - Jul 10, 19:05 UTCJul 10, 21:00 UTC1h 55m
2026-07-10 ABR2960 - Jul 10, 02:55 UTCJul 10, 05:00 UTC2h 5m
2026-07-09 ABR2961 - Jul 9, 19:15 UTCJul 9, 21:10 UTC1h 55m
2026-07-09 ABR2960 - Jul 9, 02:50 UTCJul 9, 04:50 UTC2h 0m
2026-07-08 ABR2961 - Jul 8, 19:15 UTCJul 8, 21:10 UTC1h 55m
2026-07-08 ABR2960 - Jul 8, 02:50 UTCJul 8, 04:55 UTC2h 5m
2026-07-07 ABR2961 - Jul 7, 19:15 UTCJul 7, 21:10 UTC1h 55m
2026-07-07 ABR2960 - Jul 7, 02:50 UTCJul 7, 05:00 UTC2h 10m
2026-07-06 ABR770P FCO → LEJ Jul 6, 19:30 UTCJul 6, 21:15 UTC1h 45m
2026-07-06 ABR737 CGN → LGG Jul 6, 13:30 UTCJul 6, 16:00 UTC2h 30m
2026-07-05 ABR771 - Jul 5, 16:20 UTCJul 5, 18:35 UTC2h 15m
2026-07-03 BCS21Q BOD → LEJ Jul 3, 19:40 UTCJul 3, 21:30 UTC1h 50m
2026-07-03 BCS95W - Jul 3, 04:10 UTCJul 3, 05:20 UTC1h 10m
2026-07-02 BCS21Q - Jul 2, 22:00 UTCJul 2, 22:35 UTC35m
2026-07-02 BCS32B - Jul 2, 19:10 UTCJul 2, 20:15 UTC1h 5m
2026-07-02 BCS95W - Jul 2, 04:00 UTCJul 2, 05:10 UTC1h 10m
2026-07-01 BCS21Q - Jul 1, 22:05 UTCJul 1, 22:40 UTC35m
2026-07-01 BCS32B - Jul 1, 19:25 UTCJul 1, 20:20 UTC55m
2026-07-01 BCS95W - Jul 1, 04:10 UTCJul 1, 05:20 UTC1h 10m
2026-06-30 BCS21Q - Jun 30, 22:05 UTCJun 30, 22:40 UTC35m
2026-06-30 BCS32B BOD → CDG Jun 30, 19:15 UTCJun 30, 20:05 UTC50m
2026-06-30 BCS95W BRU → BOD Jun 30, 04:05 UTCJun 30, 05:15 UTC1h 10m
2026-06-29 BCS21Q - Jun 29, 22:05 UTCJun 29, 22:39 UTC35m
2026-06-29 BCS32B - Jun 29, 19:09 UTCJun 29, 20:04 UTC55m
2026-06-29 BCS95W LEJ → BOD Jun 29, 00:24 UTCJun 29, 02:20 UTC1h 55m
2026-06-26 ABR5961 VNO → LEJ Jun 26, 18:44 UTCJun 26, 20:15 UTC1h 30m
2026-06-26 ABR5959 LEJ → VNO Jun 26, 03:24 UTCJun 26, 04:45 UTC1h 20m
2026-06-25 ABR5961 VNO → LEJ Jun 25, 18:55 UTCJun 25, 20:19 UTC1h 25m
2026-06-25 ABR5959 LEJ → VNO Jun 25, 03:29 UTCJun 25, 04:49 UTC1h 20m
2026-06-24 ABR2961 - Jun 24, 19:15 UTCJun 24, 21:19 UTC2h 5m
2026-06-24 ABR2960 - Jun 24, 02:49 UTCJun 24, 04:44 UTC1h 55m
2026-06-23 ABR5961 VNO → LEJ Jun 23, 19:00 UTCJun 23, 20:24 UTC1h 25m
2026-06-23 ABR5959 LEJ → VNO Jun 23, 03:25 UTCJun 23, 04:45 UTC1h 20m
2026-06-22 ABR5867 - Jun 22, 17:34 UTCJun 22, 19:00 UTC1h 25m
2026-06-22 ABR5868 - Jun 22, 00:24 UTCJun 22, 01:40 UTC1h 15m
2026-06-21 ABR760 - Jun 21, 20:00 UTCJun 21, 21:54 UTC1h 55m
2026-06-13 ABR4074 - Jun 13, 18:25 UTCJun 13, 20:05 UTC1h 40m
2026-06-13 ABR4074 OPO → MST Jun 13, 14:30 UTCJun 13, 16:35 UTC2h 5m
2026-06-11 ABR4073 PRG → OPO Jun 11, 09:30 UTCJun 11, 12:25 UTC2h 55m
2026-06-10 ABR4073 - Jun 10, 09:15 UTCJun 10, 11:20 UTC2h 5m
2026-05-19 ABR737 CGN → LGG May 19, 19:35 UTCMay 19, 21:05 UTC1h 30m
2026-05-18 TAY4BC BCN → CDG May 18, 21:25 UTCMay 18, 22:55 UTC1h 30m

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

Mode-S 4CA6D6 frequently asked

What is Mode-S code 4CA6D6?
4CA6D6 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-FNW.
Where is Mode-S 4CA6D6 registered?
Mode-S code 4CA6D6 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CA6D6 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 4CA6D6, octal 23123326, decimal 5,023,446.
What flights does 4CA6D6 operate?
Mode-S 4CA6D6 has broadcast 19 distinct callsigns, including TAY3BC, TAY4BC, TAY1MS, ABR2961, ABR2960.