sensors Mode-S transponder
3432CD
ICAO 24-bit transponder address · allocated to Spain
Currently assigned to T.19B-21 · CASA CN-235 Persuader
- Hex
- 3432CD
- Octal
- 15031315
- Decimal
- 3,420,877
- Country
- ES
- Tail
- T.19B-21
- Type
- CN35
- Flights observed
- 15
- Distinct callsigns
- 3
- Country
- ES
- Last broadcast
- Jul 26, 12:50 UTC
Current position
Country allocation
The ICAO 24-bit address 3432CD 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
Recent flights last 15
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | CUCO501 | - | Jul 26, 10:40 UTC | Jul 26, 12:50 UTC | 2h 10m |
| 2026-07-24 | CUCO501 | - | Jul 24, 13:20 UTC | Jul 24, 14:30 UTC | 1h 10m |
| 2026-07-20 | AME6011 | - | Jul 20, 11:55 UTC | Jul 20, 16:50 UTC | 4h 55m |
| 2026-07-19 | AME6011 | TOJ → VCE | Jul 19, 07:30 UTC | Jul 19, 10:55 UTC | 3h 25m |
| 2026-07-17 | CUCO501 | - | Jul 17, 09:40 UTC | Jul 17, 11:35 UTC | 1h 55m |
| 2026-07-17 | CUCO501 | - | Jul 17, 07:50 UTC | Jul 17, 08:59 UTC | 1h 10m |
| 2026-07-13 | CUCO501 | - | Jul 13, 14:50 UTC | Jul 13, 17:50 UTC | 3h 0m |
| 2026-07-13 | CUCO501 | - | Jul 13, 09:05 UTC | Jul 13, 11:25 UTC | 2h 20m |
| 2026-07-13 | CUCO501 | - | Jul 13, 07:40 UTC | Jul 13, 08:25 UTC | 45m |
| 2026-07-09 | CUCO501 | - | Jul 9, 08:00 UTC | Jul 9, 12:25 UTC | 4h 25m |
| 2026-07-07 | CUCO15 | - | Jul 7, 13:20 UTC | Jul 7, 14:05 UTC | 45m |
| 2026-07-07 | CUCO15 | - | Jul 7, 10:35 UTC | Jul 7, 12:00 UTC | 1h 25m |
| 2026-05-30 | CUCO15 | - | May 30, 07:55 UTC | May 30, 11:45 UTC | 3h 50m |
| 2026-05-29 | CUCO501 | - | May 29, 08:40 UTC | May 29, 09:35 UTC | 55m |
| 2026-05-27 | CUCO501 | - | May 27, 14:15 UTC | May 27, 15:10 UTC | 55m |
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 T.19B-21 page for operator, model, and routing details .