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sensors Mode-S transponder

34554D

ICAO 24-bit transponder address · allocated to Spain

Currently assigned to EC-CZO · PIPER PA-28-140/150/160/180

Hex
34554D
Octal
15052515
Decimal
3,429,709
Country
ES
Tail
EC-CZO
Type
P28A
No current signal · last broadcast 19h ago
Flights observed
317
Distinct callsigns
1
Country
ES
Last broadcast
19h ago

Last known position

Most recent position reported by Mode-S 34554D.

Country allocation

The ICAO 24-bit address 34554D 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
ECCZO - 317 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 ECCZO - Jul 13, 15:20 UTCJul 13, 16:40 UTC1h 20m
2026-07-13 ECCZO - Jul 13, 13:50 UTCJul 13, 14:50 UTC1h 0m
2026-07-12 ECCZO - Jul 12, 17:20 UTCJul 12, 19:20 UTC2h 0m
2026-07-12 ECCZO - Jul 12, 15:25 UTCJul 12, 15:55 UTC30m
2026-07-12 ECCZO - Jul 12, 11:55 UTCJul 12, 12:35 UTC40m
2026-07-12 ECCZO - Jul 12, 09:55 UTCJul 12, 10:30 UTC35m
2026-07-11 ECCZO - Jul 11, 11:50 UTCJul 11, 12:50 UTC1h 0m
2026-07-11 ECCZO - Jul 11, 09:45 UTCJul 11, 10:45 UTC1h 0m
2026-07-11 ECCZO - Jul 11, 07:35 UTCJul 11, 08:15 UTC40m
2026-07-10 ECCZO - Jul 10, 09:50 UTCJul 10, 10:55 UTC1h 5m
2026-07-10 ECCZO - Jul 10, 07:20 UTCJul 10, 08:05 UTC45m
2026-07-08 ECCZO - Jul 8, 10:00 UTCJul 8, 10:45 UTC45m
2026-07-05 ECCZO - Jul 5, 10:10 UTCJul 5, 10:20 UTC10m
2026-07-05 ECCZO - Jul 5, 08:55 UTCJul 5, 09:15 UTC20m
2026-07-05 ECCZO - Jul 5, 07:55 UTCJul 5, 08:20 UTC25m
2026-07-04 ECCZO - Jul 4, 19:35 UTCJul 4, 19:45 UTC10m
2026-07-04 ECCZO - Jul 4, 17:55 UTCJul 4, 18:10 UTC15m
2026-07-04 ECCZO - Jul 4, 16:00 UTCJul 4, 16:25 UTC25m
2026-07-04 ECCZO - Jul 4, 07:45 UTCJul 4, 08:55 UTC1h 10m
2026-07-03 ECCZO - Jul 3, 18:40 UTCJul 3, 18:50 UTC10m
2026-07-03 ECCZO - Jul 3, 17:05 UTCJul 3, 17:45 UTC40m
2026-07-03 ECCZO - Jul 3, 10:35 UTCJul 3, 11:00 UTC25m
2026-07-03 ECCZO - Jul 3, 09:00 UTCJul 3, 09:40 UTC40m
2026-07-03 ECCZO - Jul 3, 07:55 UTCJul 3, 08:25 UTC30m
2026-07-02 ECCZO - Jul 2, 18:25 UTCJul 2, 19:25 UTC1h 0m
2026-07-02 ECCZO - Jul 2, 16:20 UTCJul 2, 17:20 UTC1h 0m
2026-07-02 ECCZO - Jul 2, 11:05 UTCJul 2, 12:10 UTC1h 5m
2026-07-01 ECCZO - Jul 1, 12:00 UTCJul 1, 12:50 UTC50m
2026-07-01 ECCZO - Jul 1, 09:40 UTCJul 1, 10:40 UTC1h 0m
2026-07-01 ECCZO - Jul 1, 07:45 UTCJul 1, 08:25 UTC40m
2026-06-30 ECCZO - Jun 30, 18:20 UTCJun 30, 19:00 UTC40m
2026-06-30 ECCZO - Jun 30, 16:35 UTCJun 30, 17:10 UTC35m
2026-06-30 ECCZO - Jun 30, 14:55 UTCJun 30, 15:45 UTC50m
2026-06-30 ECCZO - Jun 30, 12:55 UTCJun 30, 14:00 UTC1h 5m
2026-06-29 ECCZO - Jun 29, 18:44 UTCJun 29, 19:24 UTC40m
2026-06-29 ECCZO - Jun 29, 17:05 UTCJun 29, 17:45 UTC40m
2026-06-29 ECCZO - Jun 29, 15:09 UTCJun 29, 15:45 UTC35m
2026-06-29 ECCZO - Jun 29, 10:40 UTCJun 29, 11:04 UTC25m
2026-06-29 ECCZO - Jun 29, 07:30 UTCJun 29, 08:19 UTC50m
2026-06-27 ECCZO - Jun 27, 15:45 UTCJun 27, 16:24 UTC40m
2026-06-27 ECCZO - Jun 27, 13:15 UTCJun 27, 13:44 UTC30m
2026-06-27 ECCZO - Jun 27, 11:50 UTCJun 27, 12:29 UTC40m
2026-06-27 ECCZO - Jun 27, 10:05 UTCJun 27, 10:25 UTC20m
2026-06-27 ECCZO - Jun 27, 08:05 UTCJun 27, 09:24 UTC1h 20m
2026-06-26 ECCZO - Jun 26, 17:59 UTCJun 26, 19:04 UTC1h 5m
2026-06-26 ECCZO - Jun 26, 16:09 UTCJun 26, 17:00 UTC50m
2026-06-26 ECCZO - Jun 26, 14:05 UTCJun 26, 14:55 UTC50m
2026-06-26 ECCZO - Jun 26, 12:10 UTCJun 26, 13:19 UTC1h 10m
2026-06-26 ECCZO - Jun 26, 10:35 UTCJun 26, 11:00 UTC25m
2026-06-25 ECCZO - Jun 25, 11:04 UTCJun 25, 11:25 UTC20m

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

Mode-S 34554D frequently asked

What is Mode-S code 34554D?
34554D is an ICAO 24-bit transponder address. Allocated to Spain. Assigned to EC-CZO.
Where is Mode-S 34554D registered?
Mode-S code 34554D is allocated to Spain (ES). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 34554D broadcasting right now?
No active broadcast right now. Last signal was 19h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 34554D, octal 15052515, decimal 3,429,709.
What flights does 34554D operate?
Mode-S 34554D has broadcast 1 distinct callsign, including ECCZO.