sensors Mode-S transponder

4CAD7F

ICAO 24-bit transponder address · allocated to Ireland

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

Hex
4CAD7F
Octal
23126577
Decimal
5,025,151
Country
IE
Tail
EI-NSF
Type
A20N
Broadcasting now · callsign EIN151 · 20,900 ft
Flights observed
14
Distinct callsigns
7
Country
IE
Last broadcast
20h ago

Current position

4CAD7F is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4CAD7F 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 7 distinct

Callsign Airline Flights Last seen
EIN77C - 3 2026-04-13
EIN4CE Aer Lingus 3 2026-04-13
EIN42W - 3 2026-04-13
EIN681 - 2 2026-04-14
EIN7VT - 1 2026-04-13
EIN680 - 1 2026-04-14
EIN182 - 1 2026-04-12

Recent flights last 14

DateFlightRouteTakeoffLandingDuration
2026-04-14 EIN681 - Apr 14, 09:10 UTCApr 14, 10:25 UTC1h 15m
2026-04-14 EIN681 - Apr 14, 08:25 UTCApr 14, 09:05 UTC40m
2026-04-14 EIN680 - Apr 14, 05:30 UTCApr 14, 07:10 UTC1h 40m
2026-04-13 EIN7VT - Apr 13, 19:50 UTCApr 13, 23:10 UTC3h 20m
2026-04-13 EIN77C - Apr 13, 16:15 UTCApr 13, 20:00 UTC3h 45m
2026-04-13 EIN77C - Apr 13, 15:50 UTCApr 13, 19:45 UTC3h 55m
2026-04-13 EIN77C - Apr 13, 14:30 UTCApr 13, 16:15 UTC1h 45m
2026-04-13 EIN42W - Apr 13, 12:20 UTCApr 13, 13:15 UTC55m
2026-04-13 EIN42W - Apr 13, 11:55 UTCApr 13, 13:15 UTC1h 20m
2026-04-13 EIN42W - Apr 13, 10:50 UTCApr 13, 12:15 UTC1h 25m
2026-04-13 EIN4CE DUB → VCE Apr 13, 08:20 UTCApr 13, 09:35 UTC1h 15m
2026-04-13 EIN4CE DUB → VCE Apr 13, 07:55 UTCApr 13, 09:35 UTC1h 40m
2026-04-13 EIN4CE DUB → VCE Apr 13, 07:00 UTCApr 13, 08:15 UTC1h 15m
2026-04-12 EIN182 - Apr 12, 18:15 UTCApr 12, 19:05 UTC50m

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

Mode-S 4CAD7F frequently asked

What is Mode-S code 4CAD7F?
4CAD7F is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-NSF.
Where is Mode-S 4CAD7F registered?
Mode-S code 4CAD7F is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAD7F broadcasting right now?
Yes. Mode-S 4CAD7F is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAD7F, octal 23126577, decimal 5,025,151.
What flights does 4CAD7F operate?
Mode-S 4CAD7F has broadcast 7 distinct callsigns, including EIN77C, EIN4CE, EIN42W, EIN681, EIN7VT.