Apparatus

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sensors Mode-S transponder

345281

ICAO 24-bit transponder address · allocated to Spain

Currently assigned to EC-MMQ · AIRBUS HELICOPTERS EC-135/635

Hex
345281
Octal
15051201
Decimal
3,428,993
Country
ES
Tail
EC-MMQ
Type
EC35
No current signal · last broadcast 1d ago
Flights observed
102
Distinct callsigns
1
Country
ES
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 345281.

Country allocation

The ICAO 24-bit address 345281 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
MEECMMQ - 102 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-21 MEECMMQ - Jul 21, 09:15 UTCJul 21, 09:45 UTC30m
2026-07-21 MEECMMQ - Jul 21, 08:10 UTCJul 21, 08:45 UTC35m
2026-07-20 MEECMMQ SVQ → JCU Jul 20, 14:25 UTCJul 20, 15:15 UTC50m
2026-07-20 MEECMMQ - Jul 20, 07:30 UTCJul 20, 08:15 UTC45m
2026-07-19 MEECMMQ - Jul 19, 13:30 UTCJul 19, 14:00 UTC30m
2026-07-19 MEECMMQ - Jul 19, 11:35 UTCJul 19, 12:10 UTC35m
2026-07-17 MEECMMQ - Jul 17, 12:30 UTCJul 17, 12:55 UTC25m
2026-07-17 MEECMMQ - Jul 17, 10:20 UTCJul 17, 10:55 UTC35m
2026-07-16 MEECMMQ - Jul 16, 17:20 UTCJul 16, 18:44 UTC1h 25m
2026-07-16 MEECMMQ SVQ → JCU Jul 16, 15:35 UTCJul 16, 16:25 UTC50m
2026-07-16 MEECMMQ JCU → SVQ Jul 16, 14:05 UTCJul 16, 15:00 UTC55m
2026-07-10 MEECMMQ - Jul 10, 23:55 UTCJul 11, 01:40 UTC1h 45m
2026-07-09 MEECMMQ - Jul 9, 16:20 UTCJul 9, 17:45 UTC1h 25m
2026-07-09 MEECMMQ - Jul 9, 14:50 UTCJul 9, 15:25 UTC35m
2026-07-09 MEECMMQ - Jul 9, 12:45 UTCJul 9, 13:15 UTC30m
2026-07-09 MEECMMQ - Jul 9, 11:15 UTCJul 9, 11:55 UTC40m
2026-07-09 MEECMMQ - Jul 9, 04:45 UTCJul 9, 05:20 UTC35m
2026-07-09 MEECMMQ JCU → XRY Jul 9, 02:10 UTCJul 9, 03:00 UTC50m
2026-07-07 MEECMMQ - Jul 7, 12:20 UTCJul 7, 13:00 UTC40m
2026-07-07 MEECMMQ - Jul 7, 08:50 UTCJul 7, 09:20 UTC30m
2026-07-02 MEECMMQ SVQ → JCU Jul 2, 13:45 UTCJul 2, 14:40 UTC55m
2026-07-02 MEECMMQ - Jul 2, 12:20 UTCJul 2, 13:10 UTC50m
2026-06-30 MEECMMQ - Jun 30, 14:15 UTCJun 30, 15:45 UTC1h 30m
2026-06-28 MEECMMQ - Jun 28, 18:34 UTCJun 28, 19:04 UTC30m
2026-06-28 MEECMMQ - Jun 28, 17:19 UTCJun 28, 17:55 UTC35m
2026-06-26 MEECMMQ - Jun 26, 16:00 UTCJun 26, 16:30 UTC30m
2026-06-26 MEECMMQ - Jun 26, 14:50 UTCJun 26, 15:25 UTC35m
2026-06-24 MEECMMQ - Jun 24, 09:00 UTCJun 24, 09:34 UTC35m
2026-06-24 MEECMMQ - Jun 24, 07:54 UTCJun 24, 08:30 UTC35m
2026-06-23 MEECMMQ - Jun 23, 15:09 UTCJun 23, 16:35 UTC1h 25m
2026-06-23 MEECMMQ - Jun 23, 11:24 UTCJun 23, 11:59 UTC35m
2026-06-23 MEECMMQ - Jun 23, 09:24 UTCJun 23, 09:54 UTC30m
2026-06-23 MEECMMQ - Jun 23, 01:20 UTCJun 23, 02:04 UTC45m
2026-06-23 MEECMMQ - Jun 23, 00:04 UTCJun 23, 00:45 UTC40m
2026-06-22 MEECMMQ - Jun 22, 14:49 UTCJun 22, 15:29 UTC40m
2026-06-22 MEECMMQ - Jun 22, 13:25 UTCJun 22, 13:54 UTC30m
2026-06-21 MEECMMQ - Jun 21, 14:05 UTCJun 21, 15:34 UTC1h 30m
2026-06-21 MEECMMQ - Jun 21, 08:54 UTCJun 21, 09:29 UTC35m
2026-06-21 MEECMMQ - Jun 21, 07:04 UTCJun 21, 07:34 UTC30m
2026-06-19 MEECMMQ - Jun 19, 11:39 UTCJun 19, 12:14 UTC35m
2026-06-19 MEECMMQ - Jun 19, 07:45 UTCJun 19, 08:14 UTC30m
2026-06-15 MEECMMQ - Jun 15, 18:29 UTCJun 15, 19:20 UTC50m
2026-06-15 MEECMMQ - Jun 15, 16:59 UTCJun 15, 17:54 UTC55m
2026-06-12 MEECMMQ - Jun 12, 16:20 UTCJun 12, 17:25 UTC1h 5m
2026-06-12 MEECMMQ - Jun 12, 15:35 UTCJun 12, 15:50 UTC15m
2026-06-12 MEECMMQ - Jun 12, 14:05 UTCJun 12, 14:40 UTC35m
2026-06-10 MEECMMQ - Jun 10, 12:45 UTCJun 10, 13:25 UTC40m
2026-06-10 MEECMMQ - Jun 10, 09:55 UTCJun 10, 10:25 UTC30m
2026-06-06 MEECMMQ - Jun 6, 01:35 UTCJun 6, 02:05 UTC30m
2026-06-05 MEECMMQ - Jun 5, 23:00 UTCJun 5, 23:35 UTC35m

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

Mode-S 345281 frequently asked

What is Mode-S code 345281?
345281 is an ICAO 24-bit transponder address. Allocated to Spain. Assigned to EC-MMQ.
Where is Mode-S 345281 registered?
Mode-S code 345281 is allocated to Spain (ES). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 345281 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 345281, octal 15051201, decimal 3,428,993.
What flights does 345281 operate?
Mode-S 345281 has broadcast 1 distinct callsign, including MEECMMQ.