sensors Mode-S transponder

4CA1CC

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-JAD · BOMBARDIER Regional Jet CRJ-900

Hex
4CA1CC
Octal
23120714
Decimal
5,022,156
Country
IE
Tail
EI-JAD
Type
CRJ9
No current signal · last broadcast 12h ago
Flights observed
15
Distinct callsigns
12
Country
IE
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 4CA1CC.

Country allocation

The ICAO 24-bit address 4CA1CC 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 12 distinct

Callsign Airline Flights Last seen
SAS1645 - 3 2026-04-13
SAS2886 - 2 2026-04-13
SAS684 Scandinavian Airlines System 1 2026-04-14
SAS683 - 1 2026-04-14
SAS55L - 1 2026-04-12
SAS2892 - 1 2026-04-14
SAS2883 - 1 2026-04-13
SAS1680 Scandinavian Airlines System 1 2026-04-12
SAS1643 - 1 2026-04-13
SAS1642 - 1 2026-04-13
SAS1609 - 1 2026-04-13
SAS1608 - 1 2026-04-13

Recent flights last 15

DateFlightRouteTakeoffLandingDuration
2026-04-14 SAS2892 - Apr 14, 10:50 UTCApr 14, 11:05 UTC15m
2026-04-14 SAS684 CPH → MXP Apr 14, 07:30 UTCApr 14, 09:05 UTC1h 35m
2026-04-14 SAS683 - Apr 14, 05:15 UTCApr 14, 06:10 UTC55m
2026-04-13 SAS2883 - Apr 13, 17:45 UTCApr 13, 19:05 UTC1h 20m
2026-04-13 SAS2886 - Apr 13, 16:15 UTCApr 13, 17:05 UTC50m
2026-04-13 SAS2886 - Apr 13, 15:50 UTCApr 13, 16:15 UTC25m
2026-04-13 SAS1643 - Apr 13, 12:50 UTCApr 13, 13:55 UTC1h 5m
2026-04-13 SAS1642 - Apr 13, 11:00 UTCApr 13, 12:00 UTC1h 0m
2026-04-13 SAS1609 - Apr 13, 08:50 UTCApr 13, 10:05 UTC1h 15m
2026-04-13 SAS1608 - Apr 13, 06:55 UTCApr 13, 07:55 UTC1h 0m
2026-04-13 SAS1645 - Apr 13, 04:20 UTCApr 13, 04:50 UTC30m
2026-04-13 SAS1645 - Apr 13, 03:55 UTCApr 13, 04:50 UTC55m
2026-04-13 SAS1645 - Apr 13, 03:35 UTCApr 13, 04:15 UTC40m
2026-04-12 SAS1680 BER → CPH Apr 12, 19:35 UTCApr 12, 20:15 UTC40m
2026-04-12 SAS55L - Apr 12, 17:55 UTCApr 12, 18:35 UTC40m

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

Mode-S 4CA1CC frequently asked

What is Mode-S code 4CA1CC?
4CA1CC is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-JAD.
Where is Mode-S 4CA1CC registered?
Mode-S code 4CA1CC is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CA1CC broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CA1CC, octal 23120714, decimal 5,022,156.
What flights does 4CA1CC operate?
Mode-S 4CA1CC has broadcast 12 distinct callsigns, including SAS1645, SAS2886, SAS684, SAS683, SAS55L.