sensors Mode-S transponder
AE1721
ICAO 24-bit transponder address
Currently assigned to 06-3815 · BEECHCRAFT T-6 Texan 2
- Hex
- AE1721
- Octal
- 53413441
- Decimal
- 11,409,185
- Tail
- 06-3815
- Type
- TEX2
- Flights observed
- 26
- Distinct callsigns
- 12
- Country
- -
- Last broadcast
- 20d ago
Last known position
Callsign history 12 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| SLASH21 | - | 9 | 2026-06-22 |
| MAFIA93 | - | 3 | 2026-06-01 |
| SLASH22 | - | 2 | 2026-04-18 |
| MAFIA91 | - | 2 | 2026-05-04 |
| HOTWAX7 | - | 2 | 2026-06-09 |
| BEAN43 | - | 2 | 2026-06-13 |
| SKUNK46 | - | 1 | 2026-04-24 |
| QUEEN42 | - | 1 | 2026-05-06 |
| LIBRA22 | - | 1 | 2026-05-15 |
| IRON11 | - | 1 | 2026-06-23 |
| DAGGER1 | - | 1 | 2026-06-12 |
| CLAW01 | - | 1 | 2026-04-16 |
Recent flights last 26
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-23 | IRON11 | - | Jun 23, 15:04 UTC | Jun 23, 15:59 UTC | 55m |
| 2026-06-22 | SLASH21 | - | Jun 22, 15:20 UTC | Jun 22, 15:29 UTC | 10m |
| 2026-06-21 | SLASH21 | - | Jun 21, 22:54 UTC | Jun 21, 23:10 UTC | 15m |
| 2026-06-21 | SLASH21 | - | Jun 21, 17:45 UTC | Jun 21, 18:35 UTC | 50m |
| 2026-06-21 | SLASH21 | - | Jun 21, 01:05 UTC | Jun 21, 01:59 UTC | 55m |
| 2026-06-18 | SLASH21 | - | Jun 18, 15:45 UTC | Jun 18, 17:15 UTC | 1h 30m |
| 2026-06-13 | BEAN43 | - | Jun 13, 19:20 UTC | Jun 13, 19:50 UTC | 30m |
| 2026-06-13 | BEAN43 | - | Jun 13, 15:35 UTC | Jun 13, 16:35 UTC | 1h 0m |
| 2026-06-12 | DAGGER1 | - | Jun 12, 02:25 UTC | Jun 12, 03:05 UTC | 40m |
| 2026-06-09 | HOTWAX7 | - | Jun 9, 00:45 UTC | Jun 9, 01:50 UTC | 1h 5m |
| 2026-06-01 | MAFIA93 | - | Jun 1, 21:05 UTC | Jun 1, 22:20 UTC | 1h 15m |
| 2026-06-01 | MAFIA93 | - | Jun 1, 16:10 UTC | Jun 1, 18:05 UTC | 1h 55m |
| 2026-05-29 | MAFIA93 | - | May 29, 23:40 UTC | May 30, 01:00 UTC | 1h 20m |
| 2026-05-20 | HOTWAX7 | - | May 20, 15:45 UTC | May 20, 15:55 UTC | 10m |
| 2026-05-15 | LIBRA22 | - | May 15, 16:20 UTC | May 15, 16:40 UTC | 20m |
| 2026-05-06 | QUEEN42 | - | May 6, 12:55 UTC | May 6, 13:45 UTC | 50m |
| 2026-05-04 | MAFIA91 | - | May 4, 21:40 UTC | May 4, 22:10 UTC | 30m |
| 2026-05-04 | MAFIA91 | - | May 4, 18:35 UTC | May 4, 18:45 UTC | 10m |
| 2026-04-24 | SKUNK46 | - | Apr 24, 19:20 UTC | Apr 24, 19:35 UTC | 15m |
| 2026-04-19 | SLASH21 | - | Apr 19, 14:50 UTC | Apr 19, 16:00 UTC | 1h 10m |
| 2026-04-18 | SLASH22 | - | Apr 18, 22:25 UTC | Apr 18, 23:50 UTC | 1h 25m |
| 2026-04-18 | SLASH22 | - | Apr 18, 18:20 UTC | Apr 18, 19:10 UTC | 50m |
| 2026-04-18 | SLASH21 | - | Apr 18, 01:25 UTC | Apr 18, 01:50 UTC | 25m |
| 2026-04-18 | SLASH21 | - | Apr 18, 00:05 UTC | Apr 18, 01:15 UTC | 1h 10m |
| 2026-04-17 | SLASH21 | - | Apr 17, 21:25 UTC | Apr 17, 22:05 UTC | 40m |
| 2026-04-16 | CLAW01 | - | Apr 16, 20:05 UTC | Apr 16, 20:35 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 06-3815 page for operator, model, and routing details .