sensors Mode-S transponder
500515
ICAO 24-bit transponder address
- Hex
- 500515
- Octal
- 24002425
- Decimal
- 5,244,181
- Flights observed
- 18
- Distinct callsigns
- 1
- Country
- -
- Last broadcast
- 8d ago
Last known position
Callsign history 1 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| T7JOY | - | 18 | 2026-07-25 |
Recent flights last 18
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-25 | T7JOY | - | Jul 25, 07:30 UTC | Jul 25, 08:10 UTC | 40m |
| 2026-07-24 | T7JOY | - | Jul 24, 12:30 UTC | Jul 24, 13:20 UTC | 50m |
| 2026-07-23 | T7JOY | - | Jul 23, 16:10 UTC | Jul 23, 17:00 UTC | 50m |
| 2026-07-23 | T7JOY | - | Jul 23, 06:35 UTC | Jul 23, 07:35 UTC | 1h 0m |
| 2026-07-21 | T7JOY | - | Jul 21, 09:45 UTC | Jul 21, 11:00 UTC | 1h 15m |
| 2026-07-21 | T7JOY | - | Jul 21, 07:10 UTC | Jul 21, 08:35 UTC | 1h 25m |
| 2026-07-18 | T7JOY | - | Jul 18, 15:00 UTC | Jul 18, 16:50 UTC | 1h 50m |
| 2026-07-12 | T7JOY | - | Jul 12, 06:10 UTC | Jul 12, 08:25 UTC | 2h 15m |
| 2026-07-03 | T7JOY | - | Jul 3, 12:50 UTC | Jul 3, 13:40 UTC | 50m |
| 2026-07-03 | T7JOY | - | Jul 3, 08:55 UTC | Jul 3, 11:50 UTC | 2h 55m |
| 2026-06-24 | T7JOY | - | Jun 24, 09:19 UTC | Jun 24, 10:30 UTC | 1h 10m |
| 2026-06-24 | T7JOY | - | Jun 24, 05:54 UTC | Jun 24, 08:39 UTC | 2h 45m |
| 2026-06-20 | T7JOY | - | Jun 20, 13:55 UTC | Jun 20, 16:09 UTC | 2h 15m |
| 2026-06-18 | T7JOY | - | Jun 18, 06:50 UTC | Jun 18, 08:55 UTC | 2h 5m |
| 2026-06-14 | T7JOY | - | Jun 14, 17:15 UTC | Jun 14, 18:10 UTC | 55m |
| 2026-06-12 | T7JOY | - | Jun 12, 06:00 UTC | Jun 12, 06:45 UTC | 45m |
| 2026-06-09 | T7JOY | - | Jun 9, 09:40 UTC | Jun 9, 10:05 UTC | 25m |
| 2026-06-09 | T7JOY | - | Jun 9, 05:30 UTC | Jun 9, 05:55 UTC | 25m |
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.