sensors Mode-S transponder
AB401B
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N824E · VANS RV-10 · operated by THOMASSON WILLIAM G, BAUER KIRK W, MILANI KALINA C
- Hex
- AB401B
- Octal
- 52640033
- Decimal
- 11,223,067
- Country
- US
- Tail
- N824E
- Type
- RV10
- Flights observed
- 30
- Distinct callsigns
- 1
- Country
- US
- Last broadcast
- Jul 26, 20:20 UTC
Last known position
Country allocation
The ICAO 24-bit address AB401B falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.
Callsign history 1 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| N824E | - | 30 | 2026-07-26 |
Recent flights last 30
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | N824E | - | Jul 26, 19:00 UTC | Jul 26, 20:20 UTC | 1h 20m |
| 2026-07-26 | N824E | - | Jul 26, 13:20 UTC | Jul 26, 15:55 UTC | 2h 35m |
| 2026-07-23 | N824E | - | Jul 23, 16:15 UTC | Jul 23, 16:45 UTC | 30m |
| 2026-07-23 | N824E | - | Jul 23, 12:35 UTC | Jul 23, 15:25 UTC | 2h 50m |
| 2026-07-22 | N824E | - | Jul 22, 16:30 UTC | Jul 22, 18:00 UTC | 1h 30m |
| 2026-07-18 | N824E | - | Jul 18, 16:35 UTC | Jul 18, 16:50 UTC | 15m |
| 2026-07-18 | N824E | - | Jul 18, 15:40 UTC | Jul 18, 16:00 UTC | 20m |
| 2026-07-18 | N824E | - | Jul 18, 14:40 UTC | Jul 18, 15:05 UTC | 25m |
| 2026-07-18 | N824E | - | Jul 18, 13:40 UTC | Jul 18, 13:55 UTC | 15m |
| 2026-07-18 | N824E | - | Jul 18, 12:00 UTC | Jul 18, 12:25 UTC | 25m |
| 2026-06-30 | N824E | - | Jun 30, 17:40 UTC | Jun 30, 18:50 UTC | 1h 10m |
| 2026-06-26 | N824E | - | Jun 26, 19:09 UTC | Jun 26, 20:34 UTC | 1h 25m |
| 2026-06-21 | N824E | - | Jun 21, 20:09 UTC | Jun 21, 21:34 UTC | 1h 25m |
| 2026-06-17 | N824E | - | Jun 17, 17:05 UTC | Jun 17, 18:20 UTC | 1h 15m |
| 2026-06-14 | N824E | - | Jun 14, 12:55 UTC | Jun 14, 15:50 UTC | 2h 55m |
| 2026-06-06 | N824E | - | Jun 6, 12:40 UTC | Jun 6, 15:39 UTC | 3h 0m |
| 2026-05-30 | N824E | - | May 30, 23:05 UTC | May 31, 01:11 UTC | 2h 6m |
| 2026-05-29 | N824E | - | May 29, 14:55 UTC | May 29, 17:25 UTC | 2h 30m |
| 2026-05-23 | N824E | - | May 23, 13:30 UTC | May 23, 16:00 UTC | 2h 30m |
| 2026-05-18 | N824E | - | May 18, 13:10 UTC | May 18, 15:50 UTC | 2h 40m |
| 2026-05-16 | N824E | - | May 16, 13:41 UTC | May 16, 13:51 UTC | 10m |
| 2026-05-10 | N824E | - | May 10, 21:49 UTC | May 10, 23:35 UTC | 1h 45m |
| 2026-05-10 | N824E | - | May 10, 19:30 UTC | May 10, 21:04 UTC | 1h 35m |
| 2026-05-09 | N824E | - | May 9, 20:55 UTC | May 9, 22:39 UTC | 1h 45m |
| 2026-05-09 | N824E | - | May 9, 18:40 UTC | May 9, 20:05 UTC | 1h 25m |
| 2026-05-03 | N824E | - | May 3, 15:50 UTC | May 3, 18:55 UTC | 3h 5m |
| 2026-04-30 | N824E | - | Apr 30, 16:15 UTC | Apr 30, 19:05 UTC | 2h 50m |
| 2026-04-27 | N824E | - | Apr 27, 19:40 UTC | Apr 27, 21:50 UTC | 2h 10m |
| 2026-04-19 | N824E | - | Apr 19, 18:40 UTC | Apr 19, 21:05 UTC | 2h 25m |
| 2026-04-18 | N824E | - | Apr 18, 17:20 UTC | Apr 18, 18:25 UTC | 1h 5m |
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 N824E page for operator, model, and routing details .