sensors Mode-S transponder

34754D

ICAO 24-bit transponder address · allocated to Spain

Currently assigned to EC-OAY · AIRBUS A-350-900

Hex
34754D
Octal
15072515
Decimal
3,437,901
Country
ES
Tail
EC-OAY
Type
A359
No current signal · last broadcast 16h ago
Flights observed
11
Distinct callsigns
3
Country
ES
Last broadcast
16h ago

Last known position

Most recent position reported by Mode-S 34754D.

Country allocation

The ICAO 24-bit address 34754D 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 3 distinct

Callsign Airline Flights Last seen
IBE0105 Iberia Airlines 6 2026-04-13
IBE0156 - 3 2026-04-13
IBE0106 - 2 2026-04-14

Recent flights last 11

DateFlightRouteTakeoffLandingDuration
2026-04-14 IBE0106 - Apr 14, 07:15 UTCApr 14, 08:45 UTC1h 30m
2026-04-13 IBE0106 - Apr 13, 21:25 UTCApr 13, 23:40 UTC2h 15m
2026-04-13 IBE0105 MAD → EZE Apr 13, 16:15 UTCApr 13, 19:05 UTC2h 50m
2026-04-13 IBE0105 MAD → EZE Apr 13, 15:50 UTCApr 13, 19:05 UTC3h 15m
2026-04-13 IBE0105 MAD → EZE Apr 13, 13:40 UTCApr 13, 16:15 UTC2h 35m
2026-04-13 IBE0105 MAD → EZE Apr 13, 08:20 UTCApr 13, 09:15 UTC55m
2026-04-13 IBE0105 MAD → EZE Apr 13, 07:55 UTCApr 13, 09:15 UTC1h 20m
2026-04-13 IBE0105 MAD → EZE Apr 13, 07:00 UTCApr 13, 08:15 UTC1h 15m
2026-04-13 IBE0156 - Apr 13, 01:40 UTCApr 13, 02:45 UTC1h 5m
2026-04-12 IBE0156 - Apr 12, 18:55 UTCApr 12, 20:00 UTC1h 5m
2026-04-12 IBE0156 - Apr 12, 17:55 UTCApr 12, 18:10 UTC15m

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

Mode-S 34754D frequently asked

What is Mode-S code 34754D?
34754D is an ICAO 24-bit transponder address. Allocated to Spain. Assigned to EC-OAY.
Where is Mode-S 34754D registered?
Mode-S code 34754D is allocated to Spain (ES). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 34754D broadcasting right now?
No active broadcast right now. Last signal was 16h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 34754D, octal 15072515, decimal 3,437,901.
What flights does 34754D operate?
Mode-S 34754D has broadcast 3 distinct callsigns, including IBE0105, IBE0156, IBE0106.