sensors Mode-S transponder
ABC9DC
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N859MB · AEROSPATIALE AS-350 Ecureuil · operated by TVPX AIRCRAFT SOLUTIONS INC TRUSTEE
- Hex
- ABC9DC
- Octal
- 52744734
- Decimal
- 11,258,332
- Country
- US
- Tail
- N859MB
- Type
- AS50
- Flights observed
- 37
- Distinct callsigns
- 2
- Country
- US
- Last broadcast
- Jul 16, 03:40 UTC
Last known position
Country allocation
The ICAO 24-bit address ABC9DC 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 2 distinct
Recent flights last 37
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-16 | REH102 | - | Jul 16, 03:20 UTC | Jul 16, 03:40 UTC | 20m |
| 2026-07-16 | REH102 | - | Jul 16, 02:20 UTC | Jul 16, 02:40 UTC | 20m |
| 2026-07-06 | REH102 | - | Jul 6, 01:20 UTC | Jul 6, 01:45 UTC | 25m |
| 2026-07-06 | REH102 | - | Jul 6, 00:25 UTC | Jul 6, 00:45 UTC | 20m |
| 2026-07-03 | REH102 | - | Jul 3, 00:35 UTC | Jul 3, 00:55 UTC | 20m |
| 2026-07-02 | REH102 | - | Jul 2, 23:40 UTC | Jul 2, 23:55 UTC | 15m |
| 2026-06-29 | REH102 | - | Jun 29, 18:10 UTC | Jun 29, 18:30 UTC | 20m |
| 2026-06-29 | REH102 | - | Jun 29, 17:14 UTC | Jun 29, 17:30 UTC | 15m |
| 2026-06-20 | REH102 | - | Jun 20, 21:40 UTC | Jun 20, 22:00 UTC | 20m |
| 2026-06-20 | REH102 | - | Jun 20, 20:29 UTC | Jun 20, 20:45 UTC | 15m |
| 2026-06-11 | REH102 | - | Jun 11, 19:10 UTC | Jun 11, 19:30 UTC | 20m |
| 2026-06-11 | REH102 | - | Jun 11, 18:15 UTC | Jun 11, 18:35 UTC | 20m |
| 2026-06-09 | REH102 | - | Jun 9, 18:10 UTC | Jun 9, 19:25 UTC | 1h 15m |
| 2026-06-08 | REH102 | - | Jun 8, 23:15 UTC | Jun 8, 23:45 UTC | 30m |
| 2026-06-08 | REH102 | - | Jun 8, 18:35 UTC | Jun 8, 18:55 UTC | 20m |
| 2026-06-08 | REH102 | - | Jun 8, 17:25 UTC | Jun 8, 17:50 UTC | 25m |
| 2026-06-07 | REH102 | - | Jun 7, 15:10 UTC | Jun 7, 15:20 UTC | 10m |
| 2026-06-04 | REH102 | - | Jun 4, 21:35 UTC | Jun 4, 21:55 UTC | 20m |
| 2026-06-04 | REH102 | - | Jun 4, 20:35 UTC | Jun 4, 20:50 UTC | 15m |
| 2026-06-02 | REH102 | - | Jun 2, 06:55 UTC | Jun 2, 07:05 UTC | 10m |
| 2026-06-02 | REH102 | - | Jun 2, 05:30 UTC | Jun 2, 05:55 UTC | 25m |
| 2026-05-30 | REH095 | - | May 30, 22:35 UTC | May 31, 00:00 UTC | 1h 25m |
| 2026-05-30 | REH095 | - | May 30, 21:25 UTC | May 30, 21:35 UTC | 10m |
| 2026-05-30 | REH095 | - | May 30, 19:45 UTC | May 30, 20:45 UTC | 1h 0m |
| 2026-05-29 | REH102 | - | May 29, 23:15 UTC | May 30, 00:40 UTC | 1h 25m |
| 2026-04-29 | REH102 | - | Apr 29, 21:35 UTC | Apr 29, 23:00 UTC | 1h 25m |
| 2026-04-29 | REH102 | - | Apr 29, 20:25 UTC | Apr 29, 20:55 UTC | 30m |
| 2026-04-29 | REH102 | - | Apr 29, 18:05 UTC | Apr 29, 19:45 UTC | 1h 40m |
| 2026-04-28 | REH102 | - | Apr 28, 06:50 UTC | Apr 28, 07:45 UTC | 55m |
| 2026-04-23 | REH102 | - | Apr 23, 14:40 UTC | Apr 23, 15:10 UTC | 30m |
| 2026-04-22 | REH102 | - | Apr 22, 23:00 UTC | Apr 22, 23:15 UTC | 15m |
| 2026-04-22 | REH102 | - | Apr 22, 21:45 UTC | Apr 22, 22:10 UTC | 25m |
| 2026-04-19 | REH102 | - | Apr 19, 21:30 UTC | Apr 19, 22:35 UTC | 1h 5m |
| 2026-04-19 | REH102 | - | Apr 19, 02:40 UTC | Apr 19, 03:15 UTC | 35m |
| 2026-04-18 | REH102 | - | Apr 18, 12:05 UTC | Apr 18, 12:15 UTC | 10m |
| 2026-04-18 | REH102 | - | Apr 18, 07:25 UTC | Apr 18, 07:55 UTC | 30m |
| 2026-04-15 | REH102 | - | Apr 15, 11:40 UTC | Apr 15, 11:50 UTC | 10m |
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 N859MB page for operator, model, and routing details .