sensors Mode-S transponder
AE5D8F
ICAO 24-bit transponder address
Currently assigned to 16-20901 · SIKORSKY UH-60 Black Hawk
- Hex
- AE5D8F
- Octal
- 53456617
- Decimal
- 11,427,215
- Tail
- 16-20901
- Type
- H60
- Flights observed
- 21
- Distinct callsigns
- 2
- Country
- -
- Last broadcast
- 22d ago
Last known position
Callsign history 2 distinct
Recent flights last 21
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-23 | G20901 | - | Jul 23, 19:05 UTC | Jul 23, 20:10 UTC | 1h 5m |
| 2026-07-23 | G20901 | - | Jul 23, 16:55 UTC | Jul 23, 17:55 UTC | 1h 0m |
| 2026-07-01 | - | - | Jul 1, 19:15 UTC | Jul 1, 19:25 UTC | 10m |
| 2026-06-24 | G20901 | - | Jun 24, 18:55 UTC | Jun 24, 19:59 UTC | 1h 5m |
| 2026-06-24 | G20901 | - | Jun 24, 13:20 UTC | Jun 24, 14:29 UTC | 1h 10m |
| 2026-06-19 | G20901 | - | Jun 19, 01:19 UTC | Jun 19, 02:59 UTC | 1h 40m |
| 2026-06-18 | G20901 | - | Jun 18, 18:40 UTC | Jun 18, 20:20 UTC | 1h 40m |
| 2026-06-11 | G20901 | - | Jun 11, 03:05 UTC | Jun 11, 04:05 UTC | 1h 0m |
| 2026-06-11 | G20901 | - | Jun 11, 00:55 UTC | Jun 11, 01:05 UTC | 10m |
| 2026-06-10 | G20901 | HLB → RID | Jun 10, 23:55 UTC | Jun 11, 00:20 UTC | 25m |
| 2026-06-10 | 20901 | - | Jun 10, 17:40 UTC | Jun 10, 18:10 UTC | 30m |
| 2026-05-22 | 20901 | - | May 22, 16:35 UTC | May 22, 17:50 UTC | 1h 15m |
| 2026-05-21 | G20901 | - | May 21, 01:45 UTC | May 21, 03:00 UTC | 1h 15m |
| 2026-05-17 | G20901 | - | May 17, 14:45 UTC | May 17, 15:50 UTC | 1h 5m |
| 2026-05-15 | G20901 | - | May 15, 01:00 UTC | May 15, 02:25 UTC | 1h 25m |
| 2026-05-08 | G20901 | - | May 8, 01:35 UTC | May 8, 02:44 UTC | 1h 10m |
| 2026-05-08 | G20901 | - | May 8, 00:20 UTC | May 8, 00:29 UTC | 10m |
| 2026-04-23 | G20901 | - | Apr 23, 01:30 UTC | Apr 23, 02:25 UTC | 55m |
| 2026-04-22 | G20901 | - | Apr 22, 22:20 UTC | Apr 22, 22:35 UTC | 15m |
| 2026-04-22 | G20901 | - | Apr 22, 16:50 UTC | Apr 22, 18:40 UTC | 1h 50m |
| 2026-04-18 | G20901 | - | Apr 18, 11:30 UTC | Apr 18, 11:45 UTC | 15m |
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 16-20901 page for operator, model, and routing details .