Apparatus

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sensors Mode-S transponder

348343

ICAO 24-bit transponder address · allocated to Spain

Currently assigned to EC-OLH · DASSAULT Falcon 2000

Hex
348343
Octal
15101503
Decimal
3,441,475
Country
ES
Tail
EC-OLH
Type
F2TH
No current signal · last broadcast 18h ago
Flights observed
8
Distinct callsigns
1
Country
ES
Last broadcast
18h ago

Last known position

Most recent position reported by Mode-S 348343.

Country allocation

The ICAO 24-bit address 348343 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 1 distinct

Callsign Airline Flights Last seen
ECOLH - 8 2026-04-14

Recent flights last 8

DateFlightRouteTakeoffLandingDuration
2026-04-14 ECOLH - Apr 14, 09:10 UTCApr 14, 09:20 UTC10m
2026-04-14 ECOLH - Apr 14, 07:10 UTCApr 14, 09:05 UTC1h 55m
2026-04-14 ECOLH - Apr 14, 06:50 UTCApr 14, 07:10 UTC20m
2026-04-13 ECOLH - Apr 13, 16:15 UTCApr 13, 16:35 UTC20m
2026-04-13 ECOLH - Apr 13, 15:50 UTCApr 13, 16:35 UTC45m
2026-04-13 ECOLH - Apr 13, 15:35 UTCApr 13, 16:15 UTC40m
2026-04-13 ECOLH - Apr 13, 10:15 UTCApr 13, 11:00 UTC45m
2026-04-13 ECOLH - Apr 13, 06:05 UTCApr 13, 06:45 UTC40m

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

Mode-S 348343 frequently asked

What is Mode-S code 348343?
348343 is an ICAO 24-bit transponder address. Allocated to Spain. Assigned to EC-OLH.
Where is Mode-S 348343 registered?
Mode-S code 348343 is allocated to Spain (ES). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 348343 broadcasting right now?
No active broadcast right now. Last signal was 18h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 348343, octal 15101503, decimal 3,441,475.
What flights does 348343 operate?
Mode-S 348343 has broadcast 1 distinct callsign, including ECOLH.