Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4CAD26

ICAO 24-bit transponder address · allocated to Ireland

Currently assigned to EI-HAU · CESSNA 172 Skyhawk

Hex
4CAD26
Octal
23126446
Decimal
5,025,062
Country
IE
Tail
EI-HAU
Type
C172
No current signal · last broadcast 1d ago
Flights observed
10
Distinct callsigns
1
Country
IE
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 4CAD26.

Country allocation

The ICAO 24-bit address 4CAD26 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 1 distinct

Callsign Airline Flights Last seen
AFZ22P - 10 2026-04-13

Recent flights last 10

DateFlightRouteTakeoffLandingDuration
2026-04-13 AFZ22P - Apr 13, 17:50 UTCApr 13, 18:25 UTC35m
2026-04-13 AFZ22P - Apr 13, 16:25 UTCApr 13, 16:50 UTC25m
2026-04-13 AFZ22P - Apr 13, 14:15 UTCApr 13, 15:10 UTC55m
2026-04-13 AFZ22P - Apr 13, 13:00 UTCApr 13, 13:15 UTC15m
2026-04-13 AFZ22P - Apr 13, 11:45 UTCApr 13, 12:15 UTC30m
2026-04-13 AFZ22P - Apr 13, 10:00 UTCApr 13, 10:45 UTC45m
2026-04-13 AFZ22P - Apr 13, 08:20 UTCApr 13, 08:55 UTC35m
2026-04-13 AFZ22P - Apr 13, 07:55 UTCApr 13, 08:55 UTC1h 0m
2026-04-13 AFZ22P - Apr 13, 07:35 UTCApr 13, 08:15 UTC40m
2026-04-12 AFZ22P - Apr 12, 18:10 UTCApr 12, 19:05 UTC55m

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

Mode-S 4CAD26 frequently asked

What is Mode-S code 4CAD26?
4CAD26 is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-HAU.
Where is Mode-S 4CAD26 registered?
Mode-S code 4CAD26 is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAD26 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAD26, octal 23126446, decimal 5,025,062.
What flights does 4CAD26 operate?
Mode-S 4CAD26 has broadcast 1 distinct callsign, including AFZ22P.