sensors Mode-S transponder

4CAD7A

ICAO 24-bit transponder address · allocated to Ireland

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

Hex
4CAD7A
Octal
23126572
Decimal
5,025,146
Country
IE
Tail
EI-NSA
Type
A20N
Broadcasting now · callsign EIN40G · 37,025 ft
Flights observed
12
Distinct callsigns
10
Country
IE
Last broadcast
20h ago

Current position

4CAD7A is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4CAD7A 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 10 distinct

Callsign Airline Flights Last seen
EIN169 - 2 2026-04-13
EIN159 - 2 2026-04-13
EIN91W - 1 2026-04-14
EIN3YR - 1 2026-04-12
EIN183 - 1 2026-04-13
EIN182 - 1 2026-04-13
EIN168 - 1 2026-04-13
EIN15C Aer Lingus 1 2026-04-13
EIN156 Aer Lingus 1 2026-04-14
EIN151 - 1 2026-04-13

Recent flights last 12

DateFlightRouteTakeoffLandingDuration
2026-04-14 EIN91W - Apr 14, 10:20 UTCApr 14, 11:05 UTC45m
2026-04-14 EIN156 DUB → LHR Apr 14, 08:05 UTCApr 14, 08:50 UTC45m
2026-04-13 EIN183 - Apr 13, 20:15 UTCApr 13, 21:05 UTC50m
2026-04-13 EIN182 DUB → LHR Apr 13, 18:05 UTCApr 13, 19:00 UTC55m
2026-04-13 EIN169 - Apr 13, 16:15 UTCApr 13, 17:05 UTC50m
2026-04-13 EIN169 - Apr 13, 16:05 UTCApr 13, 16:15 UTC10m
2026-04-13 EIN168 - Apr 13, 14:05 UTCApr 13, 14:55 UTC50m
2026-04-13 EIN159 - Apr 13, 11:55 UTCApr 13, 12:00 UTC5m
2026-04-13 EIN159 - Apr 13, 11:15 UTCApr 13, 12:00 UTC45m
2026-04-13 EIN15C DUB → LHR Apr 13, 08:50 UTCApr 13, 09:50 UTC1h 0m
2026-04-13 EIN151 - Apr 13, 06:50 UTCApr 13, 07:40 UTC50m
2026-04-12 EIN3YR - Apr 12, 18:20 UTCApr 12, 19:15 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-NSA page for operator, model, and routing details .

Mode-S 4CAD7A frequently asked

What is Mode-S code 4CAD7A?
4CAD7A is an ICAO 24-bit transponder address. Allocated to Ireland. Assigned to EI-NSA.
Where is Mode-S 4CAD7A registered?
Mode-S code 4CAD7A is allocated to Ireland (IE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4CAD7A broadcasting right now?
Yes. Mode-S 4CAD7A is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CAD7A, octal 23126572, decimal 5,025,146.
What flights does 4CAD7A operate?
Mode-S 4CAD7A has broadcast 10 distinct callsigns, including EIN169, EIN159, EIN91W, EIN3YR, EIN183.