Apparatus

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sensors Mode-S transponder

4CAFF4

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-LKD · AIRBUS A-330-300

Hex
4CAFF4
Octal
23127764
Decimal
5,025,780
Country
IE
Tail
EI-LKD
Type
A333
No current signal · last broadcast 12d ago
Flights observed
101
Distinct callsigns
15
Country
IE
Last broadcast
12d ago

Last known position

Most recent position reported by Mode-S 4CAFF4.

Country allocation

The ICAO 24-bit address 4CAFF4 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 15 distinct

Callsign Airline Flights Last seen
SVA933 - 32 2026-07-10
SVA934 - 27 2026-07-08
SVA913 - 11 2026-07-10
SVA922 - 5 2026-07-05
SVA921 - 5 2026-07-04
SVA915 Saudi Arabian Airlines 4 2026-05-19
SVA947 Saudi Arabian Airlines 3 2026-06-24
SVA914 Saudi Arabian Airlines 3 2026-07-04
SVA3946 - 3 2026-06-28
SVA916 Saudi Arabian Airlines 2 2026-05-18
SVA3916 Saudi Arabian Airlines 2 2026-05-05
SVA953 Saudi Arabian Airlines 1 2026-05-08
SVA3945 - 1 2026-06-20
SVA3942 - 1 2026-06-23
ABR331 - 1 2026-06-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-10 SVA913 - Jul 10, 15:05 UTCJul 11, 10:25 UTC19h 20m
2026-07-10 SVA913 AMS → MXP Jul 10, 14:25 UTCJul 11, 10:25 UTC20h 1m
2026-07-10 SVA933 - Jul 10, 05:00 UTCJul 10, 09:15 UTC4h 15m
2026-07-08 SVA934 - Jul 8, 15:10 UTCJul 8, 19:05 UTC3h 55m
2026-07-08 SVA933 - Jul 8, 05:00 UTCJul 8, 09:10 UTC4h 10m
2026-07-06 SVA934 - Jul 6, 14:10 UTCJul 6, 17:05 UTC2h 55m
2026-07-06 SVA933 - Jul 6, 05:05 UTCJul 6, 09:20 UTC4h 15m
2026-07-05 SVA922 - Jul 5, 07:00 UTCJul 5, 10:25 UTC3h 25m
2026-07-04 SVA921 - Jul 4, 17:25 UTCJul 5, 03:50 UTC10h 25m
2026-07-04 SVA914 FRA → RUH Jul 4, 14:40 UTCJul 4, 17:20 UTC2h 40m
2026-07-03 SVA913 - Jul 3, 15:05 UTCJul 4, 11:00 UTC19h 55m
2026-07-03 SVA934 AMS → FRA Jul 3, 14:30 UTCJul 4, 11:00 UTC20h 30m
2026-07-03 SVA933 - Jul 3, 05:10 UTCJul 3, 09:25 UTC4h 15m
2026-07-01 SVA934 - Jul 1, 16:55 UTCJul 1, 21:10 UTC4h 15m
2026-07-01 SVA933 - Jul 1, 04:45 UTCJul 1, 08:30 UTC3h 45m
2026-06-29 SVA934 - Jun 29, 15:19 UTCJun 29, 18:39 UTC3h 20m
2026-06-29 SVA933 - Jun 29, 05:20 UTCJun 29, 09:20 UTC4h 0m
2026-06-28 SVA3946 - Jun 28, 08:19 UTCJun 28, 11:14 UTC2h 55m
2026-06-28 SVA3946 - Jun 28, 00:35 UTCJun 28, 04:10 UTC3h 35m
2026-06-26 SVA934 - Jun 26, 14:19 UTCJun 26, 18:29 UTC4h 10m
2026-06-26 SVA933 - Jun 26, 04:50 UTCJun 26, 09:10 UTC4h 20m
2026-06-24 SVA934 - Jun 24, 20:14 UTCJun 25, 00:19 UTC4h 5m
2026-06-24 SVA933 - Jun 24, 11:24 UTCJun 24, 15:14 UTC3h 50m
2026-06-24 SVA947 RUH → NBO Jun 24, 01:14 UTCJun 24, 01:24 UTC10m
2026-06-23 SVA3942 - Jun 23, 07:05 UTCJun 23, 08:04 UTC1h 0m
2026-06-22 SVA934 AMS → JED Jun 22, 14:59 UTCJun 23, 03:49 UTC12h 50m
2026-06-22 SVA933 - Jun 22, 05:15 UTCJun 22, 09:10 UTC3h 55m
2026-06-21 SVA3946 - Jun 21, 07:49 UTCJun 21, 10:04 UTC2h 15m
2026-06-20 SVA3945 FRA → MXP Jun 20, 13:59 UTCJun 21, 03:55 UTC13h 55m
2026-06-19 SVA913 RUH → FRA Jun 19, 15:04 UTCJun 20, 10:55 UTC19h 50m
2026-06-19 SVA934 AMS → JED Jun 19, 14:09 UTCJun 20, 10:55 UTC20h 45m
2026-06-19 SVA933 JED → AMS Jun 19, 05:14 UTCJun 19, 08:59 UTC3h 45m
2026-06-17 SVA934 AMS → JED Jun 17, 18:20 UTCJun 17, 22:25 UTC4h 5m
2026-06-17 SVA933 JED → AMS Jun 17, 10:55 UTCJun 17, 14:50 UTC3h 55m
2026-06-16 SVA934 AMS → JED Jun 16, 09:04 UTCJun 16, 13:15 UTC4h 10m
2026-06-16 SVA933 JED → AMS Jun 16, 01:15 UTCJun 16, 05:50 UTC4h 35m
2026-06-15 ABR331 - Jun 15, 02:10 UTCJun 15, 02:24 UTC15m
2026-06-07 SVA922 BRU → JED Jun 7, 07:50 UTCJun 7, 19:35 UTC11h 45m
2026-06-06 SVA921 RUH → LGG Jun 6, 13:25 UTCJun 7, 03:55 UTC14h 30m
2026-06-05 SVA913 RUH → FRA Jun 5, 15:05 UTCJun 6, 10:55 UTC19h 50m
2026-06-05 SVA934 AMS → JED Jun 5, 14:10 UTCJun 6, 10:55 UTC20h 45m
2026-06-05 SVA933 JED → AMS Jun 5, 05:30 UTCJun 5, 09:30 UTC4h 0m
2026-06-03 SVA934 AMS → JED Jun 3, 15:05 UTCJun 3, 19:15 UTC4h 10m
2026-06-03 SVA933 JED → AMS Jun 3, 04:40 UTCJun 3, 08:35 UTC3h 55m
2026-06-01 SVA934 AMS → JED Jun 1, 13:55 UTCJun 1, 17:50 UTC3h 55m
2026-06-01 SVA933 JED → AMS Jun 1, 05:20 UTCJun 1, 09:15 UTC3h 55m
2026-05-30 SVA914 FRA → RUH May 30, 14:40 UTCMay 31, 09:00 UTC18h 20m
2026-05-29 SVA913 RUH → FRA May 29, 17:05 UTCMay 30, 11:35 UTC18h 30m
2026-05-29 SVA934 AMS → JED May 29, 15:05 UTCMay 30, 11:35 UTC20h 30m
2026-05-29 SVA934 AMS → JED May 29, 14:25 UTCMay 30, 11:35 UTC21h 10m

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

Mode-S 4CAFF4 frequently asked

What is Mode-S code 4CAFF4?
4CAFF4 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-LKD.
Where is Mode-S 4CAFF4 registered?
Mode-S code 4CAFF4 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAFF4 broadcasting right now?
No active broadcast right now. Last signal was 12d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAFF4, octal 23127764, decimal 5,025,780.
What flights does 4CAFF4 operate?
Mode-S 4CAFF4 has broadcast 15 distinct callsigns, including SVA933, SVA934, SVA913, SVA922, SVA921.