sensors Mode-S transponder
AE7481
ICAO 24-bit transponder address
Currently assigned to 21-03404 · MCDONNELL DOUGLAS AH-64 Apache
- Hex
- AE7481
- Octal
- 53472201
- Decimal
- 11,433,089
- Tail
- 21-03404
- Type
- H64
- Flights observed
- 22
- Distinct callsigns
- 4
- Country
- -
- Last broadcast
- 18m ago
Current position
Callsign history 4 distinct
Recent flights last 22
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-03 | UGLY20 | - | Jun 3, 03:50 UTC | Jun 3, 04:10 UTC | 20m |
| 2026-06-03 | UGLY20 | - | Jun 3, 03:00 UTC | Jun 3, 03:15 UTC | 15m |
| 2026-06-02 | UGLY20 | - | Jun 2, 22:40 UTC | Jun 2, 23:05 UTC | 25m |
| 2026-06-02 | UGLY20 | - | Jun 2, 21:40 UTC | Jun 2, 22:10 UTC | 30m |
| 2026-06-02 | UGLY20 | - | Jun 2, 20:40 UTC | Jun 2, 20:55 UTC | 15m |
| 2026-05-26 | UGLY20 | - | May 26, 19:25 UTC | May 26, 19:55 UTC | 30m |
| 2026-05-20 | UGLY20 | - | May 20, 19:15 UTC | May 20, 20:45 UTC | 1h 30m |
| 2026-05-20 | R13404 | - | May 20, 16:20 UTC | May 20, 18:00 UTC | 1h 40m |
| 2026-05-20 | R13404 | - | May 20, 15:25 UTC | May 20, 15:50 UTC | 25m |
| 2026-05-19 | UGLY20 | - | May 19, 17:40 UTC | May 19, 19:30 UTC | 1h 50m |
| 2026-05-19 | UGLY20 | - | May 19, 16:40 UTC | May 19, 17:05 UTC | 25m |
| 2026-05-15 | UGLY20 | - | May 15, 02:35 UTC | May 15, 03:25 UTC | 50m |
| 2026-05-15 | UGLY20 | - | May 15, 01:25 UTC | May 15, 01:40 UTC | 15m |
| 2026-05-14 | UGLY99 | - | May 14, 23:25 UTC | May 14, 23:35 UTC | 10m |
| 2026-05-14 | UGLY99 | - | May 14, 21:00 UTC | May 14, 21:55 UTC | 55m |
| 2026-05-05 | UGLY25 | - | May 5, 20:55 UTC | May 5, 21:45 UTC | 50m |
| 2026-05-05 | UGLY25 | - | May 5, 19:45 UTC | May 5, 20:15 UTC | 30m |
| 2026-05-05 | UGLY25 | - | May 5, 18:45 UTC | May 5, 18:55 UTC | 10m |
| 2026-04-26 | UGLY25 | - | Apr 26, 04:55 UTC | Apr 26, 05:20 UTC | 25m |
| 2026-04-25 | UGLY25 | - | Apr 25, 19:45 UTC | Apr 25, 20:35 UTC | 50m |
| 2026-04-23 | UGLY25 | - | Apr 23, 21:55 UTC | Apr 23, 23:25 UTC | 1h 30m |
| 2026-04-23 | UGLY25 | - | Apr 23, 20:45 UTC | Apr 23, 21:10 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.
Prefer a tail-number view? See the 21-03404 page for operator, model, and routing details .