sensors Mode-S transponder

4CAD98

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-SCH · AIRBUS A-320neo

Hex
4CAD98
Octal
23126630
Decimal
5,025,176
Country
IE
Tail
EI-SCH
Type
A20N
No current signal · last broadcast 22h ago
Flights observed
13
Distinct callsigns
9
Country
IE
Last broadcast
22h ago

Last known position

Most recent position reported by Mode-S 4CAD98.

Country allocation

The ICAO 24-bit address 4CAD98 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 9 distinct

Callsign Airline Flights Last seen
SAS1593 Scandinavian Airlines System 3 2026-04-13
SAS57R - 2 2026-04-13
SAS33D - 2 2026-04-14
SAS89T Scandinavian Airlines System 1 2026-04-13
SAS88P - 1 2026-04-12
SAS69P Scandinavian Airlines System 1 2026-04-14
SAS62A - 1 2026-04-13
SAS601 - 1 2026-04-13
SAS2657 - 1 2026-04-13

Recent flights last 13

DateFlightRouteTakeoffLandingDuration
2026-04-14 SAS33D - Apr 14, 09:10 UTCApr 14, 10:45 UTC1h 35m
2026-04-14 SAS33D - Apr 14, 08:10 UTCApr 14, 09:05 UTC55m
2026-04-14 SAS69P CPH → CDG Apr 14, 05:15 UTCApr 14, 06:50 UTC1h 35m
2026-04-13 SAS57R - Apr 13, 19:50 UTCApr 13, 20:20 UTC30m
2026-04-13 SAS57R - Apr 13, 19:10 UTCApr 13, 20:10 UTC1h 0m
2026-04-13 SAS2657 - Apr 13, 16:40 UTCApr 13, 18:00 UTC1h 20m
2026-04-13 SAS62A - Apr 13, 13:45 UTCApr 13, 15:00 UTC1h 15m
2026-04-13 SAS1593 CPH → BRU Apr 13, 12:20 UTCApr 13, 12:45 UTC25m
2026-04-13 SAS1593 CPH → BRU Apr 13, 11:55 UTCApr 13, 12:45 UTC50m
2026-04-13 SAS1593 CPH → BRU Apr 13, 11:25 UTCApr 13, 12:15 UTC50m
2026-04-13 SAS89T ZRH → CPH Apr 13, 08:35 UTCApr 13, 10:00 UTC1h 25m
2026-04-13 SAS601 - Apr 13, 06:00 UTCApr 13, 07:30 UTC1h 30m
2026-04-12 SAS88P DUB → CPH Apr 12, 18:20 UTCApr 12, 20:00 UTC1h 40m

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

Mode-S 4CAD98 frequently asked

What is Mode-S code 4CAD98?
4CAD98 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-SCH.
Where is Mode-S 4CAD98 registered?
Mode-S code 4CAD98 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAD98 broadcasting right now?
No active broadcast right now. Last signal was 22h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAD98, octal 23126630, decimal 5,025,176.
What flights does 4CAD98 operate?
Mode-S 4CAD98 has broadcast 9 distinct callsigns, including SAS1593, SAS57R, SAS33D, SAS89T, SAS88P.