sensors Mode-S transponder
0CA200
ICAO 24-bit transponder address
- Hex
- 0CA200
- Octal
- 03121000
- Decimal
- 827,904
- Flights observed
- 20
- Distinct callsigns
- 7
- Country
- -
- Last broadcast
- 4d ago
Last known position
Callsign history 7 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| GAO900 | - | 12 | 2026-05-06 |
| GAO521 | Golden Air | 2 | 2026-07-21 |
| GAO520 | Golden Air | 2 | 2026-07-22 |
| GAO770 | Golden Air | 1 | 2026-06-28 |
| GAO360 | - | 1 | 2026-07-13 |
| GAO326 | - | 1 | 2026-07-15 |
| GAO321 | - | 1 | 2026-06-29 |
Recent flights last 20
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-22 | GAO520 | ANU → SKB | Jul 22, 23:15 UTC | Jul 22, 23:45 UTC | 30m |
| 2026-07-22 | GAO520 | ANU → SKB | Jul 22, 00:05 UTC | Jul 22, 23:45 UTC | 23h 40m |
| 2026-07-21 | GAO521 | ANU → PTP | Jul 21, 23:40 UTC | Jul 22, 00:10 UTC | 30m |
| 2026-07-19 | GAO521 | ANU → PTP | Jul 19, 00:20 UTC | Jul 19, 15:45 UTC | 15h 25m |
| 2026-07-15 | GAO326 | - | Jul 15, 15:50 UTC | Jul 15, 19:00 UTC | 3h 10m |
| 2026-07-13 | GAO360 | - | Jul 13, 19:35 UTC | Jul 13, 19:50 UTC | 15m |
| 2026-06-29 | GAO321 | - | Jun 29, 21:24 UTC | Jun 29, 21:44 UTC | 20m |
| 2026-06-28 | GAO770 | DOM → ANU | Jun 28, 17:50 UTC | Jun 28, 18:29 UTC | 40m |
| 2026-05-06 | GAO900 | - | May 6, 05:15 UTC | May 6, 06:05 UTC | 50m |
| 2026-05-06 | GAO900 | - | May 6, 03:10 UTC | May 6, 04:00 UTC | 50m |
| 2026-05-05 | GAO900 | - | May 5, 23:10 UTC | May 6, 00:01 UTC | 50m |
| 2026-05-05 | GAO900 | - | May 5, 21:30 UTC | May 5, 22:01 UTC | 30m |
| 2026-05-03 | GAO900 | - | May 3, 22:15 UTC | May 4, 01:24 UTC | 3h 10m |
| 2026-04-29 | GAO900 | - | Apr 29, 21:05 UTC | Apr 29, 21:30 UTC | 25m |
| 2026-04-28 | GAO900 | - | Apr 28, 02:45 UTC | Apr 28, 03:35 UTC | 50m |
| 2026-04-27 | GAO900 | - | Apr 27, 23:50 UTC | Apr 28, 01:25 UTC | 1h 35m |
| 2026-04-27 | GAO900 | - | Apr 27, 21:25 UTC | Apr 27, 21:40 UTC | 15m |
| 2026-04-24 | GAO900 | - | Apr 24, 20:30 UTC | Apr 24, 20:55 UTC | 25m |
| 2026-04-24 | GAO900 | - | Apr 24, 17:50 UTC | Apr 24, 18:05 UTC | 15m |
| 2026-04-24 | GAO900 | - | Apr 24, 15:05 UTC | Apr 24, 15:30 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.