sensors Mode-S transponder
DDEF31
ICAO 24-bit transponder address
- Hex
- DDEF31
- Octal
- 67367461
- Decimal
- 14,544,689
- Flights observed
- 21
- Distinct callsigns
- 1
- Country
- -
- Last broadcast
- 3d ago
Last known position
Callsign history 1 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| DKHAT | - | 21 | 2026-07-19 |
Recent flights last 21
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-19 | DKHAT | - | Jul 19, 15:20 UTC | Jul 19, 16:50 UTC | 1h 30m |
| 2026-07-19 | DKHAT | - | Jul 19, 11:40 UTC | Jul 19, 14:45 UTC | 3h 5m |
| 2026-07-18 | DKHAT | - | Jul 18, 13:40 UTC | Jul 18, 18:05 UTC | 4h 25m |
| 2026-07-15 | DKHAT | - | Jul 15, 14:50 UTC | Jul 15, 17:35 UTC | 2h 45m |
| 2026-07-14 | DKHAT | - | Jul 14, 09:55 UTC | Jul 14, 10:20 UTC | 25m |
| 2026-05-28 | DKHAT | - | May 28, 09:10 UTC | May 28, 15:35 UTC | 6h 25m |
| 2026-05-27 | DKHAT | - | May 27, 10:35 UTC | May 27, 15:10 UTC | 4h 35m |
| 2026-05-26 | DKHAT | - | May 26, 13:40 UTC | May 26, 14:24 UTC | 45m |
| 2026-05-26 | DKHAT | - | May 26, 11:34 UTC | May 26, 12:24 UTC | 50m |
| 2026-05-24 | DKHAT | - | May 24, 10:25 UTC | May 24, 14:25 UTC | 4h 0m |
| 2026-05-23 | DKHAT | - | May 23, 12:25 UTC | May 23, 15:25 UTC | 3h 0m |
| 2026-05-23 | DKHAT | - | May 23, 11:05 UTC | May 23, 11:35 UTC | 30m |
| 2026-05-22 | DKHAT | - | May 22, 10:25 UTC | May 22, 14:50 UTC | 4h 25m |
| 2026-05-21 | DKHAT | - | May 21, 11:55 UTC | May 21, 15:00 UTC | 3h 5m |
| 2026-05-20 | DKHAT | - | May 20, 10:25 UTC | May 20, 14:25 UTC | 4h 0m |
| 2026-05-19 | DKHAT | - | May 19, 12:50 UTC | May 19, 14:45 UTC | 1h 55m |
| 2026-05-14 | DKHAT | - | May 14, 10:25 UTC | May 14, 11:40 UTC | 1h 15m |
| 2026-05-13 | DKHAT | - | May 13, 12:35 UTC | May 13, 13:55 UTC | 1h 20m |
| 2026-05-13 | DKHAT | - | May 13, 10:50 UTC | May 13, 11:50 UTC | 1h 0m |
| 2026-05-03 | DKHAT | - | May 3, 11:05 UTC | May 3, 12:35 UTC | 1h 30m |
| 2026-05-02 | DKHAT | - | May 2, 11:40 UTC | May 2, 14:25 UTC | 2h 45m |
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.