sensors Mode-S transponder
A3A9E2
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N335RJ · CESSNA 550 Citation S2 · operated by WINGS II LLC
- Hex
- A3A9E2
- Octal
- 50724742
- Decimal
- 10,725,858
- Country
- US
- Tail
- N335RJ
- Type
- C550
- Flights observed
- 34
- Distinct callsigns
- 1
- Country
- US
- Last broadcast
- Jul 23, 19:15 UTC
Last known position
Country allocation
The ICAO 24-bit address A3A9E2 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 |
|---|---|---|---|
| N335RJ | - | 34 | 2026-07-23 |
Recent flights last 34
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-23 | N335RJ | - | Jul 23, 18:20 UTC | Jul 23, 19:15 UTC | 55m |
| 2026-07-23 | N335RJ | - | Jul 23, 16:35 UTC | Jul 23, 17:40 UTC | 1h 5m |
| 2026-07-19 | N335RJ | - | Jul 19, 17:25 UTC | Jul 19, 18:40 UTC | 1h 15m |
| 2026-07-19 | N335RJ | - | Jul 19, 15:40 UTC | Jul 19, 16:30 UTC | 50m |
| 2026-07-15 | N335RJ | - | Jul 15, 14:35 UTC | Jul 15, 15:35 UTC | 1h 0m |
| 2026-07-11 | N335RJ | - | Jul 11, 20:30 UTC | Jul 11, 21:25 UTC | 55m |
| 2026-07-08 | N335RJ | - | Jul 8, 16:25 UTC | Jul 8, 17:25 UTC | 1h 0m |
| 2026-07-05 | N335RJ | - | Jul 5, 18:20 UTC | Jul 5, 19:10 UTC | 50m |
| 2026-07-02 | N335RJ | - | Jul 2, 17:15 UTC | Jul 2, 18:05 UTC | 50m |
| 2026-06-28 | N335RJ | - | Jun 28, 19:40 UTC | Jun 28, 20:29 UTC | 50m |
| 2026-06-25 | N335RJ | - | Jun 25, 19:44 UTC | Jun 25, 20:34 UTC | 50m |
| 2026-06-21 | N335RJ | - | Jun 21, 19:29 UTC | Jun 21, 20:24 UTC | 55m |
| 2026-06-18 | N335RJ | - | Jun 18, 16:20 UTC | Jun 18, 17:21 UTC | 1h 1m |
| 2026-06-14 | N335RJ | - | Jun 14, 22:00 UTC | Jun 14, 22:55 UTC | 55m |
| 2026-06-11 | N335RJ | - | Jun 11, 18:20 UTC | Jun 11, 19:10 UTC | 50m |
| 2026-06-07 | N335RJ | - | Jun 7, 20:10 UTC | Jun 7, 21:05 UTC | 55m |
| 2026-06-01 | N335RJ | - | Jun 1, 17:45 UTC | Jun 1, 18:30 UTC | 45m |
| 2026-05-27 | N335RJ | - | May 27, 16:40 UTC | May 27, 17:05 UTC | 25m |
| 2026-05-22 | N335RJ | - | May 22, 19:40 UTC | May 22, 19:50 UTC | 10m |
| 2026-05-19 | N335RJ | - | May 19, 21:00 UTC | May 19, 21:50 UTC | 50m |
| 2026-05-16 | N335RJ | - | May 16, 03:50 UTC | May 16, 04:40 UTC | 50m |
| 2026-05-15 | N335RJ | - | May 15, 01:55 UTC | May 15, 02:45 UTC | 50m |
| 2026-05-13 | N335RJ | - | May 13, 17:10 UTC | May 13, 18:05 UTC | 55m |
| 2026-05-10 | N335RJ | - | May 10, 22:30 UTC | May 10, 23:15 UTC | 45m |
| 2026-05-08 | N335RJ | - | May 8, 20:15 UTC | May 8, 21:55 UTC | 1h 40m |
| 2026-05-06 | N335RJ | - | May 6, 19:35 UTC | May 6, 20:25 UTC | 50m |
| 2026-05-02 | N335RJ | - | May 2, 19:40 UTC | May 2, 20:45 UTC | 1h 5m |
| 2026-04-28 | N335RJ | - | Apr 28, 20:35 UTC | Apr 28, 21:35 UTC | 1h 0m |
| 2026-04-26 | N335RJ | - | Apr 26, 18:40 UTC | Apr 26, 19:35 UTC | 55m |
| 2026-04-25 | N335RJ | - | Apr 25, 00:50 UTC | Apr 25, 01:45 UTC | 55m |
| 2026-04-22 | N335RJ | - | Apr 22, 19:40 UTC | Apr 22, 20:40 UTC | 1h 0m |
| 2026-04-19 | N335RJ | - | Apr 19, 22:25 UTC | Apr 19, 23:15 UTC | 50m |
| 2026-04-16 | N335RJ | - | Apr 16, 23:20 UTC | Apr 17, 00:10 UTC | 50m |
| 2026-04-14 | N335RJ | - | Apr 14, 21:15 UTC | Apr 14, 22:15 UTC | 1h 0m |
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 N335RJ page for operator, model, and routing details .