sensors Mode-S transponder
AA3D45
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N759UL · CESSNA 182 Skylane · operated by JAV AIR SERVICES LLC
- Hex
- AA3D45
- Octal
- 52436505
- Decimal
- 11,156,805
- Country
- US
- Tail
- N759UL
- Type
- C182
- Flights observed
- 32
- Distinct callsigns
- 1
- Country
- US
- Last broadcast
- Jul 22, 20:25 UTC
Last known position
Country allocation
The ICAO 24-bit address AA3D45 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 |
|---|---|---|---|
| N759UL | - | 32 | 2026-07-22 |
Recent flights last 32
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-22 | N759UL | - | Jul 22, 20:15 UTC | Jul 22, 20:25 UTC | 10m |
| 2026-07-19 | N759UL | - | Jul 19, 05:00 UTC | Jul 19, 07:00 UTC | 2h 0m |
| 2026-07-17 | N759UL | - | Jul 17, 02:39 UTC | Jul 17, 04:49 UTC | 2h 10m |
| 2026-07-11 | N759UL | - | Jul 11, 16:20 UTC | Jul 11, 17:55 UTC | 1h 35m |
| 2026-06-27 | N759UL | - | Jun 27, 16:04 UTC | Jun 27, 17:55 UTC | 1h 50m |
| 2026-06-13 | N759UL | - | Jun 13, 22:20 UTC | Jun 14, 01:45 UTC | 3h 25m |
| 2026-06-13 | N759UL | - | Jun 13, 15:40 UTC | Jun 13, 21:15 UTC | 5h 35m |
| 2026-06-11 | N759UL | - | Jun 11, 15:35 UTC | Jun 11, 19:20 UTC | 3h 45m |
| 2026-06-10 | N759UL | - | Jun 10, 18:15 UTC | Jun 10, 21:25 UTC | 3h 10m |
| 2026-06-10 | N759UL | - | Jun 10, 16:05 UTC | Jun 10, 17:35 UTC | 1h 30m |
| 2026-06-09 | N759UL | - | Jun 9, 23:40 UTC | Jun 10, 03:45 UTC | 4h 5m |
| 2026-06-06 | N759UL | - | Jun 6, 21:25 UTC | Jun 6, 22:30 UTC | 1h 5m |
| 2026-06-06 | N759UL | - | Jun 6, 16:14 UTC | Jun 6, 20:39 UTC | 4h 25m |
| 2026-06-05 | N759UL | - | Jun 5, 16:05 UTC | Jun 5, 19:25 UTC | 3h 20m |
| 2026-06-04 | N759UL | - | Jun 4, 21:30 UTC | Jun 4, 23:50 UTC | 2h 20m |
| 2026-06-04 | N759UL | - | Jun 4, 16:10 UTC | Jun 4, 20:25 UTC | 4h 15m |
| 2026-06-03 | N759UL | - | Jun 3, 23:55 UTC | Jun 4, 03:20 UTC | 3h 25m |
| 2026-06-03 | N759UL | - | Jun 3, 17:05 UTC | Jun 3, 23:10 UTC | 6h 5m |
| 2026-06-02 | N759UL | - | Jun 2, 22:40 UTC | Jun 3, 03:25 UTC | 4h 45m |
| 2026-06-02 | N759UL | - | Jun 2, 16:05 UTC | Jun 2, 21:25 UTC | 5h 20m |
| 2026-06-01 | N759UL | - | Jun 1, 20:15 UTC | Jun 2, 02:35 UTC | 6h 20m |
| 2026-05-30 | N759UL | - | May 30, 16:25 UTC | May 30, 21:05 UTC | 4h 40m |
| 2026-05-28 | N759UL | - | May 28, 17:55 UTC | May 28, 18:40 UTC | 45m |
| 2026-05-28 | N759UL | - | May 28, 03:45 UTC | May 28, 05:30 UTC | 1h 45m |
| 2026-05-08 | N759UL | - | May 8, 01:49 UTC | May 8, 03:44 UTC | 1h 55m |
| 2026-05-07 | N759UL | - | May 7, 22:20 UTC | May 7, 23:45 UTC | 1h 25m |
| 2026-05-07 | N759UL | - | May 7, 16:40 UTC | May 7, 17:00 UTC | 20m |
| 2026-05-07 | N759UL | - | May 7, 15:00 UTC | May 7, 15:40 UTC | 40m |
| 2026-04-25 | N759UL | - | Apr 25, 16:55 UTC | Apr 25, 20:35 UTC | 3h 40m |
| 2026-04-24 | N759UL | - | Apr 24, 16:50 UTC | Apr 24, 21:55 UTC | 5h 5m |
| 2026-04-20 | N759UL | - | Apr 20, 17:00 UTC | Apr 20, 23:20 UTC | 6h 20m |
| 2026-04-19 | N759UL | - | Apr 19, 19:50 UTC | Apr 19, 21:30 UTC | 1h 40m |
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 N759UL page for operator, model, and routing details .