sensors Mode-S transponder
A3F6B9
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N3545J · CESSNA TR182 Turbo Skylane RG · operated by BARR AIR PATROL LLC
- Hex
- A3F6B9
- Octal
- 50773271
- Decimal
- 10,745,529
- Country
- US
- Tail
- N3545J
- Type
- C82T
- Flights observed
- 43
- Distinct callsigns
- 1
- Country
- US
- Last broadcast
- Jul 23, 19:25 UTC
Last known position
Country allocation
The ICAO 24-bit address A3F6B9 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 |
|---|---|---|---|
| N3545J | - | 43 | 2026-07-23 |
Recent flights last 43
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-23 | N3545J | - | Jul 23, 15:40 UTC | Jul 23, 19:25 UTC | 3h 45m |
| 2026-07-22 | N3545J | - | Jul 22, 14:15 UTC | Jul 22, 19:50 UTC | 5h 35m |
| 2026-07-20 | N3545J | - | Jul 20, 14:20 UTC | Jul 20, 20:00 UTC | 5h 40m |
| 2026-07-15 | N3545J | - | Jul 15, 16:55 UTC | Jul 15, 18:00 UTC | 1h 5m |
| 2026-07-15 | N3545J | - | Jul 15, 14:05 UTC | Jul 15, 16:20 UTC | 2h 15m |
| 2026-07-14 | N3545J | - | Jul 14, 14:15 UTC | Jul 14, 19:45 UTC | 5h 30m |
| 2026-07-09 | N3545J | - | Jul 9, 14:40 UTC | Jul 9, 20:10 UTC | 5h 30m |
| 2026-07-07 | N3545J | - | Jul 7, 14:25 UTC | Jul 7, 18:05 UTC | 3h 40m |
| 2026-07-01 | N3545J | - | Jul 1, 15:45 UTC | Jul 1, 20:30 UTC | 4h 45m |
| 2026-06-26 | N3545J | - | Jun 26, 14:25 UTC | Jun 26, 20:20 UTC | 5h 55m |
| 2026-06-24 | N3545J | - | Jun 24, 14:09 UTC | Jun 24, 19:29 UTC | 5h 20m |
| 2026-06-23 | N3545J | - | Jun 23, 16:05 UTC | Jun 23, 19:50 UTC | 3h 45m |
| 2026-06-19 | N3545J | - | Jun 19, 14:49 UTC | Jun 19, 20:34 UTC | 5h 45m |
| 2026-06-17 | N3545J | - | Jun 17, 14:55 UTC | Jun 17, 20:45 UTC | 5h 50m |
| 2026-06-16 | N3545J | - | Jun 16, 13:40 UTC | Jun 16, 17:45 UTC | 4h 5m |
| 2026-06-12 | N3545J | - | Jun 12, 14:45 UTC | Jun 12, 20:15 UTC | 5h 30m |
| 2026-06-03 | N3545J | - | Jun 3, 14:25 UTC | Jun 3, 17:55 UTC | 3h 30m |
| 2026-06-02 | N3545J | - | Jun 2, 14:30 UTC | Jun 2, 20:20 UTC | 5h 50m |
| 2026-05-30 | N3545J | - | May 30, 14:20 UTC | May 30, 20:00 UTC | 5h 40m |
| 2026-05-28 | N3545J | - | May 28, 13:30 UTC | May 28, 17:25 UTC | 3h 55m |
| 2026-05-26 | N3545J | - | May 26, 14:40 UTC | May 26, 20:05 UTC | 5h 25m |
| 2026-05-22 | N3545J | - | May 22, 14:25 UTC | May 22, 18:05 UTC | 3h 40m |
| 2026-05-21 | N3545J | - | May 21, 14:00 UTC | May 21, 19:25 UTC | 5h 25m |
| 2026-05-15 | N3545J | - | May 15, 14:20 UTC | May 15, 20:00 UTC | 5h 39m |
| 2026-05-12 | N3545J | - | May 12, 14:35 UTC | May 12, 18:25 UTC | 3h 50m |
| 2026-05-11 | N3545J | - | May 11, 15:30 UTC | May 11, 19:15 UTC | 3h 46m |
| 2026-05-10 | N3545J | - | May 10, 17:49 UTC | May 10, 20:45 UTC | 2h 55m |
| 2026-05-10 | N3545J | - | May 10, 15:35 UTC | May 10, 17:10 UTC | 1h 35m |
| 2026-04-23 | N3545J | - | Apr 23, 16:00 UTC | Apr 23, 19:30 UTC | 3h 30m |
| 2026-04-21 | N3545J | - | Apr 21, 18:00 UTC | Apr 21, 20:55 UTC | 2h 55m |
| 2026-04-21 | N3545J | - | Apr 21, 14:40 UTC | Apr 21, 17:15 UTC | 2h 35m |
| 2026-04-17 | N3545J | - | Apr 17, 19:25 UTC | Apr 17, 21:15 UTC | 1h 50m |
| 2026-04-17 | N3545J | - | Apr 17, 18:30 UTC | Apr 17, 19:20 UTC | 50m |
| 2026-04-17 | N3545J | - | Apr 17, 17:25 UTC | Apr 17, 18:00 UTC | 35m |
| 2026-04-17 | N3545J | - | Apr 17, 15:25 UTC | Apr 17, 17:10 UTC | 1h 45m |
| 2026-04-15 | N3545J | - | Apr 15, 18:05 UTC | Apr 15, 18:45 UTC | 40m |
| 2026-04-15 | N3545J | - | Apr 15, 17:05 UTC | Apr 15, 17:35 UTC | 30m |
| 2026-04-13 | N3545J | - | Apr 13, 19:50 UTC | Apr 13, 20:55 UTC | 1h 5m |
| 2026-04-13 | N3545J | - | Apr 13, 19:15 UTC | Apr 13, 20:10 UTC | 55m |
| 2026-04-13 | N3545J | - | Apr 13, 18:10 UTC | Apr 13, 18:35 UTC | 25m |
| 2026-04-13 | N3545J | - | Apr 13, 16:15 UTC | Apr 13, 17:20 UTC | 1h 5m |
| 2026-04-13 | N3545J | - | Apr 13, 15:50 UTC | Apr 13, 17:20 UTC | 1h 30m |
| 2026-04-13 | N3545J | - | Apr 13, 14:25 UTC | Apr 13, 16:15 UTC | 1h 50m |
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 N3545J page for operator, model, and routing details .