sensors Mode-S transponder

4CA420

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to 285 · CASA C-295 Persuader

Hex
4CA420
Octal
23122040
Decimal
5,022,752
Country
IE
Tail
285
Type
C295
No current signal · last broadcast 14h ago
Flights observed
99
Distinct callsigns
2
Country
IE
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S 4CA420.

Country allocation

The ICAO 24-bit address 4CA420 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 2 distinct

Callsign Airline Flights Last seen
C285 - 89 2026-07-16
KRAKEN - 10 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 KRAKEN - Jul 17, 16:00 UTCJul 17, 17:20 UTC1h 20m
2026-07-16 C285 - Jul 16, 12:25 UTCJul 16, 14:55 UTC2h 30m
2026-07-16 C285 - Jul 16, 09:20 UTCJul 16, 10:20 UTC1h 0m
2026-07-15 KRAKEN - Jul 15, 15:20 UTCJul 15, 19:45 UTC4h 25m
2026-07-14 C285 - Jul 14, 11:35 UTCJul 14, 13:20 UTC1h 45m
2026-07-14 C285 - Jul 14, 09:00 UTCJul 14, 10:10 UTC1h 10m
2026-07-13 C285 - Jul 13, 12:10 UTCJul 13, 14:50 UTC2h 40m
2026-07-13 C285 - Jul 13, 09:05 UTCJul 13, 10:05 UTC1h 0m
2026-07-10 KRAKEN - Jul 10, 14:45 UTCJul 10, 17:10 UTC2h 25m
2026-07-09 KRAKEN - Jul 9, 09:15 UTCJul 9, 12:50 UTC3h 35m
2026-07-08 C285 - Jul 8, 14:35 UTCJul 8, 17:20 UTC2h 45m
2026-07-08 C285 - Jul 8, 10:50 UTCJul 8, 12:20 UTC1h 30m
2026-07-07 C285 - Jul 7, 23:50 UTCJul 8, 01:55 UTC2h 5m
2026-07-07 C285 - Jul 7, 15:35 UTCJul 7, 18:20 UTC2h 45m
2026-07-07 C285 - Jul 7, 13:10 UTCJul 7, 14:20 UTC1h 10m
2026-07-06 C285 - Jul 6, 17:05 UTCJul 6, 18:30 UTC1h 25m
2026-07-06 C285 - Jul 6, 13:25 UTCJul 6, 14:30 UTC1h 5m
2026-07-03 KRAKEN - Jul 3, 14:15 UTCJul 3, 16:00 UTC1h 45m
2026-07-03 KRAKEN - Jul 3, 10:20 UTCJul 3, 13:05 UTC2h 45m
2026-07-02 KRAKEN - Jul 2, 15:25 UTCJul 2, 18:15 UTC2h 50m
2026-07-02 KRAKEN - Jul 2, 13:00 UTCJul 2, 14:50 UTC1h 50m
2026-07-01 KRAKEN - Jul 1, 16:25 UTCJul 1, 21:00 UTC4h 35m
2026-07-01 KRAKEN - Jul 1, 08:00 UTCJul 1, 13:40 UTC5h 40m
2026-06-30 C285 - Jun 30, 13:25 UTCJun 30, 15:15 UTC1h 50m
2026-06-29 C285 - Jun 29, 14:29 UTCJun 29, 15:34 UTC1h 5m
2026-06-29 C285 - Jun 29, 11:50 UTCJun 29, 12:55 UTC1h 5m
2026-06-27 C285 - Jun 27, 14:25 UTCJun 27, 15:24 UTC1h 0m
2026-06-27 C285 - Jun 27, 11:55 UTCJun 27, 13:20 UTC1h 25m
2026-06-26 C285 - Jun 26, 12:05 UTCJun 26, 12:55 UTC50m
2026-06-26 C285 - Jun 26, 09:55 UTCJun 26, 10:55 UTC1h 0m
2026-06-25 C285 - Jun 25, 18:19 UTCJun 25, 18:59 UTC40m
2026-06-25 C285 - Jun 25, 16:05 UTCJun 25, 17:05 UTC1h 0m
2026-06-24 C285 - Jun 24, 16:14 UTCJun 24, 16:59 UTC45m
2026-06-24 C285 - Jun 24, 12:04 UTCJun 24, 13:00 UTC55m
2026-06-23 C285 - Jun 23, 13:24 UTCJun 23, 14:25 UTC1h 0m
2026-06-23 C285 - Jun 23, 09:05 UTCJun 23, 10:04 UTC1h 0m
2026-06-22 C285 - Jun 22, 18:15 UTCJun 22, 18:54 UTC40m
2026-06-22 C285 - Jun 22, 14:59 UTCJun 22, 15:54 UTC55m
2026-06-20 C285 - Jun 20, 12:30 UTCJun 20, 13:49 UTC1h 20m
2026-06-20 C285 - Jun 20, 08:39 UTCJun 20, 09:49 UTC1h 10m
2026-06-19 C285 - Jun 19, 14:19 UTCJun 19, 15:34 UTC1h 15m
2026-06-19 C285 - Jun 19, 10:39 UTCJun 19, 11:39 UTC1h 0m
2026-06-18 C285 - Jun 18, 08:50 UTCJun 18, 11:25 UTC2h 35m
2026-06-17 C285 - Jun 17, 18:15 UTCJun 17, 19:05 UTC50m
2026-06-17 C285 - Jun 17, 15:05 UTCJun 17, 16:50 UTC1h 45m
2026-06-16 C285 - Jun 16, 14:55 UTCJun 16, 15:30 UTC35m
2026-06-16 C285 - Jun 16, 09:15 UTCJun 16, 10:09 UTC55m
2026-06-15 C285 - Jun 15, 15:00 UTCJun 15, 15:50 UTC50m
2026-06-15 C285 - Jun 15, 12:10 UTCJun 15, 13:15 UTC1h 5m
2026-06-14 C285 - Jun 14, 12:40 UTCJun 14, 13:25 UTC45m

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 285 page for operator, model, and routing details .

Mode-S 4CA420 frequently asked

What is Mode-S code 4CA420?
4CA420 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to 285.
Where is Mode-S 4CA420 registered?
Mode-S code 4CA420 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CA420 broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CA420, octal 23122040, decimal 5,022,752.
What flights does 4CA420 operate?
Mode-S 4CA420 has broadcast 2 distinct callsigns, including C285, KRAKEN.