sensors Mode-S transponder

347253

ICAO 24-bit transponder address · allocated to Spain

Currently assigned to EC-NSR · AGUSTA AW-139

Hex
347253
Octal
15071123
Decimal
3,437,139
Country
ES
Tail
EC-NSR
Type
A139
No current signal · last broadcast 20h ago
Flights observed
27
Distinct callsigns
18
Country
ES
Last broadcast
20h ago

Last known position

Most recent position reported by Mode-S 347253.

Country allocation

The ICAO 24-bit address 347253 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 18 distinct

Callsign Airline Flights Last seen
HTY216 - 3 2026-04-13
HTY215 - 2 2026-04-13
HTY204 - 2 2026-04-14
HTY203 - 2 2026-04-14
HTY104 - 2 2026-04-14
HTY103 - 2 2026-04-14
HTY102 - 2 2026-04-14
HTY101 - 2 2026-04-14
HTYY206 - 1 2026-04-14
HTY292 - 1 2026-04-13
HTY291 - 1 2026-04-13
HTY234 - 1 2026-04-13
HTY233 - 1 2026-04-13
HTY205 - 1 2026-04-14
HTY134 - 1 2026-04-12
HTY133 - 1 2026-04-12
HTY128 - 1 2026-04-13
HTY127 - 1 2026-04-13

Recent flights last 27

DateFlightRouteTakeoffLandingDuration
2026-04-14 HTYY206 - Apr 14, 10:25 UTCApr 14, 10:55 UTC30m
2026-04-14 HTY205 - Apr 14, 09:10 UTCApr 14, 09:30 UTC20m
2026-04-14 HTY104 - Apr 14, 08:35 UTCApr 14, 08:45 UTC10m
2026-04-14 HTY103 - Apr 14, 08:20 UTCApr 14, 08:25 UTC5m
2026-04-14 HTY204 - Apr 14, 07:40 UTCApr 14, 08:10 UTC30m
2026-04-14 HTY203 - Apr 14, 06:05 UTCApr 14, 06:35 UTC30m
2026-04-14 HTY102 - Apr 14, 05:45 UTCApr 14, 05:55 UTC10m
2026-04-14 HTY101 - Apr 14, 05:30 UTCApr 14, 05:40 UTC10m
2026-04-13 HTY216 - Apr 13, 19:50 UTCApr 13, 20:00 UTC10m
2026-04-13 HTY216 - Apr 13, 19:30 UTCApr 13, 20:00 UTC30m
2026-04-13 HTY215 - Apr 13, 18:10 UTCApr 13, 18:40 UTC30m
2026-04-13 HTY128 - Apr 13, 17:50 UTCApr 13, 17:55 UTC5m
2026-04-13 HTY127 - Apr 13, 17:30 UTCApr 13, 17:40 UTC10m
2026-04-13 HTY292 - Apr 13, 16:55 UTCApr 13, 17:20 UTC25m
2026-04-13 HTY291 - Apr 13, 14:50 UTCApr 13, 15:20 UTC30m
2026-04-13 HTY234 - Apr 13, 11:25 UTCApr 13, 11:50 UTC25m
2026-04-13 HTY233 - Apr 13, 09:45 UTCApr 13, 10:15 UTC30m
2026-04-13 HTY104 - Apr 13, 08:25 UTCApr 13, 08:35 UTC10m
2026-04-13 HTY103 - Apr 13, 08:10 UTCApr 13, 08:20 UTC10m
2026-04-13 HTY204 - Apr 13, 07:35 UTCApr 13, 08:00 UTC25m
2026-04-13 HTY203 - Apr 13, 06:05 UTCApr 13, 06:35 UTC30m
2026-04-13 HTY102 - Apr 13, 05:50 UTCApr 13, 06:00 UTC11m
2026-04-13 HTY101 - Apr 13, 05:30 UTCApr 13, 05:40 UTC10m
2026-04-12 HTY216 - Apr 12, 19:55 UTCApr 12, 20:15 UTC20m
2026-04-12 HTY215 - Apr 12, 17:55 UTCApr 12, 18:25 UTC30m
2026-04-12 HTY134 - Apr 12, 17:30 UTCApr 12, 17:40 UTC10m
2026-04-12 HTY133 - Apr 12, 17:15 UTCApr 12, 17:20 UTC5m

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

Mode-S 347253 frequently asked

What is Mode-S code 347253?
347253 is an ICAO 24-bit transponder address. Allocated to Spain. Assigned to EC-NSR.
Where is Mode-S 347253 registered?
Mode-S code 347253 is allocated to Spain (ES). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 347253 broadcasting right now?
No active broadcast right now. Last signal was 20h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 347253, octal 15071123, decimal 3,437,139.
What flights does 347253 operate?
Mode-S 347253 has broadcast 18 distinct callsigns, including HTY216, HTY215, HTY204, HTY203, HTY104.