sensors Mode-S transponder
3C6A4C
ICAO 24-bit transponder address · allocated to Germany
- Hex
- 3C6A4C
- Octal
- 17065114
- Decimal
- 3,959,372
- Country
- DE
- Flights observed
- 11
- Distinct callsigns
- 2
- Country
- DE
- Last broadcast
- 19d ago
Last known position
Country allocation
The ICAO 24-bit address 3C6A4C falls within the block assigned to Germany (DE) by ICAO Annex 10, Volume III. Every aircraft registered in Germany 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 2 distinct
Recent flights last 11
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-25 | - | - | Jul 25, 02:50 UTC | Jul 25, 03:00 UTC | 10m |
| 2026-07-12 | CFG016 | - | Jul 12, 11:25 UTC | Jul 13, 03:05 UTC | 15h 40m |
| 2026-07-12 | CFG016 | - | Jul 12, 03:15 UTC | Jul 12, 11:30 UTC | 8h 15m |
| 2026-07-11 | CFG038 | - | Jul 11, 12:10 UTC | Jul 12, 03:20 UTC | 15h 10m |
| 2026-07-03 | CFG016 | - | Jul 3, 12:00 UTC | Jul 4, 04:05 UTC | 16h 5m |
| 2026-06-28 | - | HYC → HYC | Jun 28, 10:15 UTC | Jun 28, 10:24 UTC | 10m |
| 2026-06-24 | - | - | Jun 24, 10:10 UTC | Jun 24, 10:19 UTC | 10m |
| 2026-05-29 | - | - | May 29, 11:40 UTC | May 30, 03:15 UTC | 15h 35m |
| 2026-05-27 | - | - | May 27, 11:10 UTC | May 27, 11:20 UTC | 10m |
| 2026-05-11 | - | - | May 11, 14:40 UTC | May 12, 06:35 UTC | 15h 56m |
| 2026-05-03 | - | - | May 3, 02:50 UTC | May 3, 03:00 UTC | 10m |
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.