sensors Mode-S transponder
497CD5
ICAO 24-bit transponder address · allocated to Portugal
- Hex
- 497CD5
- Octal
- 22276325
- Decimal
- 4,816,085
- Country
- PT
- Type
- FFLO
- Flights observed
- 14
- Distinct callsigns
- 10
- Country
- PT
- Last broadcast
- 20d ago
Last known position
Country allocation
The ICAO 24-bit address 497CD5 falls within the block assigned to Portugal (PT) by ICAO Annex 10, Volume III. Every aircraft registered in Portugal 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 10 distinct
Recent flights last 14
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-03 | SPRTN60 | - | Jul 3, 09:35 UTC | Jul 3, 10:40 UTC | 1h 5m |
| 2026-06-30 | SPRTN60 | - | Jun 30, 10:10 UTC | Jun 30, 10:40 UTC | 30m |
| 2026-06-29 | SPRTN60 | - | Jun 29, 11:20 UTC | Jun 29, 12:09 UTC | 50m |
| 2026-06-17 | SPRTN72 | - | Jun 17, 11:25 UTC | Jun 17, 12:25 UTC | 1h 0m |
| 2026-06-17 | SPRTN31 | - | Jun 17, 09:20 UTC | Jun 17, 10:55 UTC | 1h 35m |
| 2026-06-16 | SPRTN64 | - | Jun 16, 09:30 UTC | Jun 16, 11:35 UTC | 2h 5m |
| 2026-06-15 | SPRTN30 | - | Jun 15, 12:55 UTC | Jun 15, 14:15 UTC | 1h 20m |
| 2026-06-15 | SPRTN30 | - | Jun 15, 09:10 UTC | Jun 15, 10:30 UTC | 1h 20m |
| 2026-06-11 | SPARW04 | - | Jun 11, 13:55 UTC | Jun 11, 15:15 UTC | 1h 20m |
| 2026-06-08 | SPARW31 | - | Jun 8, 14:45 UTC | Jun 8, 15:10 UTC | 25m |
| 2026-06-03 | SPARW04 | - | Jun 3, 10:25 UTC | Jun 3, 11:15 UTC | 50m |
| 2026-06-02 | SPARW37 | - | Jun 2, 10:00 UTC | Jun 2, 11:10 UTC | 1h 10m |
| 2026-06-01 | SPARW40 | - | Jun 1, 10:15 UTC | Jun 1, 11:30 UTC | 1h 15m |
| 2026-05-28 | SPARW64 | - | May 28, 09:55 UTC | May 28, 11:10 UTC | 1h 15m |
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.