Apparatus

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sensors Mode-S transponder

341699

ICAO 24-bit transponder address · allocated to Spain

Currently assigned to EC-INV · ATR-72-202

Hex
341699
Octal
15013231
Decimal
3,413,657
Country
ES
Tail
EC-INV
Type
AT72
Transponder active on ground
Flights observed
3
Distinct callsigns
2
Country
ES
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 341699.

Country allocation

The ICAO 24-bit address 341699 falls within the block assigned to Spain (ES) by ICAO Annex 10, Volume III. Every aircraft registered in Spain 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
SWT1CW Swiftair 2 2026-04-13
SWT2CW - 1 2026-04-13

Recent flights last 3

DateFlightRouteTakeoffLandingDuration
2026-04-13 SWT2CW WRO → CGN Apr 13, 20:45 UTCApr 13, 22:25 UTC1h 40m
2026-04-13 SWT1CW CGN → WRO Apr 13, 03:55 UTCApr 13, 04:00 UTC5m
2026-04-13 SWT1CW CGN → WRO Apr 13, 02:25 UTCApr 13, 04:00 UTC1h 35m

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 EC-INV page for operator, model, and routing details .

Mode-S 341699 frequently asked

What is Mode-S code 341699?
341699 is an ICAO 24-bit transponder address. Allocated to Spain. Assigned to EC-INV.
Where is Mode-S 341699 registered?
Mode-S code 341699 is allocated to Spain (ES). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 341699 broadcasting right now?
Mode-S 341699 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 341699, octal 15013231, decimal 3,413,657.
What flights does 341699 operate?
Mode-S 341699 has broadcast 2 distinct callsigns, including SWT1CW, SWT2CW.