Apparatus

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sensors Mode-S transponder

345255

ICAO 24-bit transponder address · allocated to Spain

Currently assigned to EC-MMI · AIRBUS HELICOPTERS EC-130

Hex
345255
Octal
15051125
Decimal
3,428,949
Country
ES
Tail
EC-MMI
Type
EC30
Broadcasting now · callsign ECMMI · 3,500 ft
Flights observed
40
Distinct callsigns
1
Country
ES
Last broadcast
Jul 26, 18:00 UTC

Current position

345255 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 345255 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
ECMMI - 40 2026-07-26

Recent flights last 40

DateFlightRouteTakeoffLandingDuration
2026-07-26 ECMMI - Jul 26, 15:10 UTCJul 26, 18:00 UTC2h 50m
2026-07-26 ECMMI - Jul 26, 09:45 UTCJul 26, 12:20 UTC2h 35m
2026-07-25 ECMMI - Jul 25, 18:05 UTCJul 25, 19:15 UTC1h 10m
2026-07-25 ECMMI - Jul 25, 13:35 UTCJul 25, 16:15 UTC2h 40m
2026-07-25 ECMMI - Jul 25, 08:50 UTCJul 25, 11:40 UTC2h 50m
2026-07-24 ECMMI - Jul 24, 17:40 UTCJul 24, 19:30 UTC1h 50m
2026-07-24 ECMMI - Jul 24, 12:50 UTCJul 24, 15:40 UTC2h 50m
2026-07-24 ECMMI - Jul 24, 08:10 UTCJul 24, 10:55 UTC2h 45m
2026-07-23 ECMMI - Jul 23, 17:35 UTCJul 23, 19:15 UTC1h 40m
2026-07-23 ECMMI - Jul 23, 13:25 UTCJul 23, 16:15 UTC2h 50m
2026-07-23 ECMMI - Jul 23, 08:40 UTCJul 23, 11:30 UTC2h 50m
2026-07-22 ECMMI - Jul 22, 15:50 UTCJul 22, 18:20 UTC2h 30m
2026-07-22 ECMMI - Jul 22, 12:00 UTCJul 22, 13:50 UTC1h 50m
2026-07-21 ECMMI - Jul 21, 16:25 UTCJul 21, 18:50 UTC2h 25m
2026-07-21 ECMMI - Jul 21, 11:55 UTCJul 21, 14:40 UTC2h 45m
2026-07-19 ECMMI - Jul 19, 15:40 UTCJul 19, 18:10 UTC2h 30m
2026-07-16 ECMMI - Jul 16, 15:00 UTCJul 16, 16:05 UTC1h 5m
2026-07-16 ECMMI - Jul 16, 12:00 UTCJul 16, 13:40 UTC1h 40m
2026-07-11 ECMMI - Jul 11, 16:55 UTCJul 11, 17:55 UTC1h 0m
2026-07-11 ECMMI - Jul 11, 16:05 UTCJul 11, 16:15 UTC10m
2026-07-11 ECMMI - Jul 11, 09:45 UTCJul 11, 11:00 UTC1h 15m
2026-07-10 ECMMI - Jul 10, 09:55 UTCJul 10, 11:35 UTC1h 40m
2026-07-09 ECMMI - Jul 9, 17:15 UTCJul 9, 17:25 UTC10m
2026-07-09 ECMMI - Jul 9, 15:45 UTCJul 9, 16:15 UTC30m
2026-07-09 ECMMI - Jul 9, 12:45 UTCJul 9, 14:05 UTC1h 20m
2026-07-09 ECMMI - Jul 9, 08:45 UTCJul 9, 09:10 UTC25m
2026-07-06 ECMMI - Jul 6, 13:30 UTCJul 6, 13:40 UTC10m
2026-07-06 ECMMI - Jul 6, 09:05 UTCJul 6, 09:15 UTC10m
2026-07-05 ECMMI - Jul 5, 11:25 UTCJul 5, 11:50 UTC25m
2026-07-04 ECMMI - Jul 4, 16:10 UTCJul 4, 16:30 UTC20m
2026-07-04 ECMMI - Jul 4, 15:05 UTCJul 4, 15:35 UTC30m
2026-06-11 ECMMI - Jun 11, 11:00 UTCJun 11, 11:20 UTC20m
2026-06-11 ECMMI - Jun 11, 10:10 UTCJun 11, 10:20 UTC10m
2026-06-10 ECMMI - Jun 10, 16:35 UTCJun 10, 17:00 UTC25m
2026-06-10 ECMMI - Jun 10, 11:50 UTCJun 10, 12:05 UTC15m
2026-06-10 ECMMI - Jun 10, 06:45 UTCJun 10, 08:00 UTC1h 15m
2026-04-24 ECMMI - Apr 24, 14:15 UTCApr 24, 14:30 UTC15m
2026-04-24 ECMMI - Apr 24, 13:20 UTCApr 24, 13:35 UTC15m
2026-04-24 ECMMI - Apr 24, 08:40 UTCApr 24, 09:10 UTC30m
2026-04-24 ECMMI - Apr 24, 06:45 UTCApr 24, 07:50 UTC1h 5m

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

Mode-S 345255 frequently asked

What is Mode-S code 345255?
345255 is an ICAO 24-bit transponder address. Allocated to Spain. Assigned to EC-MMI.
Where is Mode-S 345255 registered?
Mode-S code 345255 is allocated to Spain (ES). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 345255 broadcasting right now?
Yes. Mode-S 345255 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 345255, octal 15051125, decimal 3,428,949.
What flights does 345255 operate?
Mode-S 345255 has broadcast 1 distinct callsign, including ECMMI.