sensors Mode-S transponder
AE600A
ICAO 24-bit transponder address
Currently assigned to 17-20923 · SIKORSKY UH-60 Black Hawk
- Hex
- AE600A
- Octal
- 53460012
- Decimal
- 11,427,850
- Tail
- 17-20923
- Type
- H60
- Flights observed
- 5
- Distinct callsigns
- 1
- Country
- -
- Last broadcast
- Jul 26, 18:30 UTC
Last known position
Callsign history 1 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| G20923 | - | 5 | 2026-07-26 |
Recent flights last 5
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | G20923 | CLU → CLU | Jul 26, 17:45 UTC | Jul 26, 18:30 UTC | 45m |
| 2026-07-19 | G20923 | - | Jul 19, 20:40 UTC | Jul 19, 22:35 UTC | 1h 55m |
| 2026-07-15 | G20923 | - | Jul 15, 18:50 UTC | Jul 15, 19:25 UTC | 35m |
| 2026-07-15 | G20923 | - | Jul 15, 12:40 UTC | Jul 15, 13:50 UTC | 1h 10m |
| 2026-06-27 | G20923 | - | Jun 27, 18:09 UTC | Jun 27, 18:39 UTC | 30m |
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.
Prefer a tail-number view? See the 17-20923 page for operator, model, and routing details .