sensors Mode-S transponder
505B03
ICAO 24-bit transponder address
- Hex
- 505B03
- Octal
- 24055403
- Decimal
- 5,266,179
No current signal · last broadcast 17d ago
- Flights observed
- 53
- Distinct callsigns
- 1
- Country
- -
- Last broadcast
- 17d ago
Last known position
Callsign history 1 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| OMXCX | - | 53 | 2026-07-26 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | OMXCX | - | Jul 26, 14:50 UTC | Jul 26, 15:05 UTC | 15m |
| 2026-07-26 | OMXCX | - | Jul 26, 12:25 UTC | Jul 26, 12:40 UTC | 15m |
| 2026-07-26 | OMXCX | - | Jul 26, 10:50 UTC | Jul 26, 11:10 UTC | 20m |
| 2026-07-25 | OMXCX | - | Jul 25, 13:10 UTC | Jul 25, 14:20 UTC | 1h 10m |
| 2026-07-25 | OMXCX | - | Jul 25, 11:55 UTC | Jul 25, 12:15 UTC | 20m |
| 2026-07-25 | OMXCX | - | Jul 25, 08:55 UTC | Jul 25, 09:10 UTC | 15m |
| 2026-07-24 | OMXCX | - | Jul 24, 10:45 UTC | Jul 24, 11:40 UTC | 55m |
| 2026-07-24 | OMXCX | - | Jul 24, 09:40 UTC | Jul 24, 10:10 UTC | 30m |
| 2026-07-24 | OMXCX | - | Jul 24, 07:45 UTC | Jul 24, 08:45 UTC | 1h 0m |
| 2026-07-24 | OMXCX | - | Jul 24, 05:15 UTC | Jul 24, 06:55 UTC | 1h 40m |
| 2026-07-23 | OMXCX | - | Jul 23, 13:15 UTC | Jul 23, 13:30 UTC | 15m |
| 2026-07-23 | OMXCX | - | Jul 23, 08:50 UTC | Jul 23, 09:35 UTC | 45m |
| 2026-07-21 | OMXCX | - | Jul 21, 14:00 UTC | Jul 21, 15:00 UTC | 1h 0m |
| 2026-07-21 | OMXCX | - | Jul 21, 10:45 UTC | Jul 21, 11:25 UTC | 40m |
| 2026-07-21 | OMXCX | - | Jul 21, 09:35 UTC | Jul 21, 10:05 UTC | 30m |
| 2026-07-21 | OMXCX | - | Jul 21, 07:25 UTC | Jul 21, 08:30 UTC | 1h 5m |
| 2026-07-20 | OMXCX | - | Jul 20, 12:05 UTC | Jul 20, 12:35 UTC | 30m |
| 2026-07-20 | OMXCX | - | Jul 20, 10:40 UTC | Jul 20, 11:35 UTC | 55m |
| 2026-07-20 | OMXCX | - | Jul 20, 09:05 UTC | Jul 20, 09:50 UTC | 45m |
| 2026-07-20 | OMXCX | - | Jul 20, 06:35 UTC | Jul 20, 06:45 UTC | 10m |
| 2026-07-19 | OMXCX | - | Jul 19, 18:20 UTC | Jul 19, 19:15 UTC | 55m |
| 2026-07-19 | OMXCX | - | Jul 19, 16:10 UTC | Jul 19, 18:05 UTC | 1h 55m |
| 2026-07-19 | OMXCX | - | Jul 19, 11:00 UTC | Jul 19, 12:25 UTC | 1h 25m |
| 2026-07-18 | OMXCX | - | Jul 18, 11:35 UTC | Jul 18, 12:00 UTC | 25m |
| 2026-07-18 | OMXCX | - | Jul 18, 09:10 UTC | Jul 18, 10:10 UTC | 1h 0m |
| 2026-07-18 | OMXCX | - | Jul 18, 07:55 UTC | Jul 18, 08:25 UTC | 30m |
| 2026-07-18 | OMXCX | - | Jul 18, 05:35 UTC | Jul 18, 05:55 UTC | 20m |
| 2026-07-17 | OMXCX | - | Jul 17, 13:10 UTC | Jul 17, 13:29 UTC | 20m |
| 2026-07-17 | OMXCX | - | Jul 17, 07:20 UTC | Jul 17, 07:40 UTC | 20m |
| 2026-07-17 | OMXCX | - | Jul 17, 06:29 UTC | Jul 17, 06:50 UTC | 20m |
| 2026-07-16 | OMXCX | - | Jul 16, 07:05 UTC | Jul 16, 08:45 UTC | 1h 40m |
| 2026-07-16 | OMXCX | - | Jul 16, 04:45 UTC | Jul 16, 06:20 UTC | 1h 35m |
| 2026-07-14 | OMXCX | - | Jul 14, 12:55 UTC | Jul 14, 14:15 UTC | 1h 20m |
| 2026-07-14 | OMXCX | - | Jul 14, 11:30 UTC | Jul 14, 11:50 UTC | 20m |
| 2026-07-14 | OMXCX | - | Jul 14, 07:35 UTC | Jul 14, 09:20 UTC | 1h 45m |
| 2026-07-13 | OMXCX | - | Jul 13, 14:45 UTC | Jul 13, 15:30 UTC | 45m |
| 2026-07-13 | OMXCX | - | Jul 13, 13:10 UTC | Jul 13, 13:20 UTC | 10m |
| 2026-07-12 | OMXCX | - | Jul 12, 07:50 UTC | Jul 12, 08:25 UTC | 35m |
| 2026-07-11 | OMXCX | - | Jul 11, 13:50 UTC | Jul 11, 16:20 UTC | 2h 30m |
| 2026-07-11 | OMXCX | - | Jul 11, 10:10 UTC | Jul 11, 11:15 UTC | 1h 5m |
| 2026-07-11 | OMXCX | - | Jul 11, 08:05 UTC | Jul 11, 09:10 UTC | 1h 5m |
| 2026-07-10 | OMXCX | - | Jul 10, 15:40 UTC | Jul 10, 16:40 UTC | 1h 0m |
| 2026-07-10 | OMXCX | - | Jul 10, 14:10 UTC | Jul 10, 14:20 UTC | 10m |
| 2026-07-10 | OMXCX | - | Jul 10, 11:55 UTC | Jul 10, 13:40 UTC | 1h 45m |
| 2026-07-10 | OMXCX | - | Jul 10, 08:30 UTC | Jul 10, 08:40 UTC | 10m |
| 2026-07-07 | OMXCX | - | Jul 7, 14:40 UTC | Jul 7, 15:05 UTC | 25m |
| 2026-06-29 | OMXCX | - | Jun 29, 05:40 UTC | Jun 29, 05:50 UTC | 10m |
| 2026-06-29 | OMXCX | - | Jun 29, 03:14 UTC | Jun 29, 04:50 UTC | 1h 35m |
| 2026-06-28 | OMXCX | - | Jun 28, 15:24 UTC | Jun 28, 16:49 UTC | 1h 25m |
| 2026-06-28 | OMXCX | - | Jun 28, 06:10 UTC | Jun 28, 06:49 UTC | 40m |
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.
Mode-S 505B03 frequently asked
What is Mode-S code 505B03?
505B03 is an ICAO 24-bit transponder address.
Is 505B03 broadcasting right now?
No active broadcast right now. Last signal was 17d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 505B03, octal 24055403, decimal 5,266,179.
What flights does 505B03 operate?
Mode-S 505B03 has broadcast 1 distinct callsign, including OMXCX.