sensors Mode-S transponder
A03FC9
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N115LJ · LEARJET 45 · operated by UMB BANK NA TRUSTEE, MIDWEST FLIGHT I LLC
- Hex
- A03FC9
- Octal
- 50037711
- Decimal
- 10,502,089
- Country
- US
- Tail
- N115LJ
- Type
- LJ45
- Flights observed
- 46
- Distinct callsigns
- 1
- Country
- US
- Last broadcast
- 5d ago
Last known position
Country allocation
The ICAO 24-bit address A03FC9 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 |
|---|---|---|---|
| N115LJ | - | 46 | 2026-07-17 |
Recent flights last 46
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-17 | N115LJ | RDM → JLN | Jul 17, 21:39 UTC | Jul 18, 00:35 UTC | 2h 55m |
| 2026-07-17 | N115LJ | - | Jul 17, 18:29 UTC | Jul 17, 21:00 UTC | 2h 30m |
| 2026-07-17 | N115LJ | - | Jul 17, 14:15 UTC | Jul 17, 14:44 UTC | 30m |
| 2026-07-12 | N115LJ | IAD → JLN | Jul 12, 19:55 UTC | Jul 12, 21:55 UTC | 2h 0m |
| 2026-07-12 | N115LJ | - | Jul 12, 17:10 UTC | Jul 12, 19:15 UTC | 2h 5m |
| 2026-07-12 | N115LJ | - | Jul 12, 02:05 UTC | Jul 12, 02:30 UTC | 25m |
| 2026-07-11 | N115LJ | - | Jul 11, 17:45 UTC | Jul 11, 18:10 UTC | 25m |
| 2026-07-10 | N115LJ | - | Jul 10, 20:10 UTC | Jul 10, 21:10 UTC | 1h 0m |
| 2026-07-10 | N115LJ | IAD → BNA | Jul 10, 18:25 UTC | Jul 10, 19:45 UTC | 1h 20m |
| 2026-07-10 | N115LJ | - | Jul 10, 14:55 UTC | Jul 10, 16:45 UTC | 1h 50m |
| 2026-07-02 | N115LJ | DFW → JLN | Jul 2, 14:00 UTC | Jul 2, 14:50 UTC | 50m |
| 2026-06-30 | N115LJ | - | Jun 30, 13:30 UTC | Jun 30, 14:30 UTC | 1h 0m |
| 2026-06-26 | N115LJ | TEB → JLN | Jun 26, 14:55 UTC | Jun 26, 17:40 UTC | 2h 45m |
| 2026-06-25 | N115LJ | - | Jun 25, 20:49 UTC | Jun 25, 22:59 UTC | 2h 10m |
| 2026-06-18 | N115LJ | RSW → JLN | Jun 18, 22:35 UTC | Jun 19, 00:59 UTC | 2h 24m |
| 2026-06-16 | N115LJ | - | Jun 16, 12:10 UTC | Jun 16, 12:35 UTC | 25m |
| 2026-06-15 | N115LJ | - | Jun 15, 11:39 UTC | Jun 15, 14:00 UTC | 2h 20m |
| 2026-06-14 | N115LJ | - | Jun 14, 21:40 UTC | Jun 15, 00:29 UTC | 2h 50m |
| 2026-06-14 | N115LJ | - | Jun 14, 19:15 UTC | Jun 14, 19:55 UTC | 40m |
| 2026-06-14 | N115LJ | - | Jun 14, 15:25 UTC | Jun 14, 17:25 UTC | 2h 0m |
| 2026-06-13 | N115LJ | - | Jun 13, 17:50 UTC | Jun 13, 18:10 UTC | 20m |
| 2026-06-12 | N115LJ | - | Jun 12, 18:55 UTC | Jun 12, 21:05 UTC | 2h 10m |
| 2026-06-12 | N115LJ | JLN → BWI | Jun 12, 15:10 UTC | Jun 12, 17:15 UTC | 2h 5m |
| 2026-06-07 | N115LJ | - | Jun 7, 21:10 UTC | Jun 7, 23:30 UTC | 2h 20m |
| 2026-06-07 | N115LJ | - | Jun 7, 18:25 UTC | Jun 7, 20:25 UTC | 2h 0m |
| 2026-06-03 | N115LJ | - | Jun 3, 21:05 UTC | Jun 3, 22:20 UTC | 1h 15m |
| 2026-06-03 | N115LJ | - | Jun 3, 11:30 UTC | Jun 3, 12:40 UTC | 1h 10m |
| 2026-05-25 | N115LJ | - | May 25, 18:35 UTC | May 25, 20:55 UTC | 2h 19m |
| 2026-05-25 | N115LJ | JLN → IAD | May 25, 16:10 UTC | May 25, 18:05 UTC | 1h 55m |
| 2026-05-20 | N115LJ | TEB → JLN | May 20, 18:45 UTC | May 20, 21:30 UTC | 2h 45m |
| 2026-05-20 | N115LJ | - | May 20, 13:50 UTC | May 20, 16:05 UTC | 2h 15m |
| 2026-04-30 | N115LJ | - | Apr 30, 22:55 UTC | May 1, 01:25 UTC | 2h 30m |
| 2026-04-30 | N115LJ | IAD → SRQ | Apr 30, 20:10 UTC | Apr 30, 22:15 UTC | 2h 5m |
| 2026-04-30 | N115LJ | - | Apr 30, 16:55 UTC | Apr 30, 18:45 UTC | 1h 50m |
| 2026-04-29 | N115LJ | IAD → JLN | Apr 29, 19:40 UTC | Apr 29, 22:05 UTC | 2h 25m |
| 2026-04-28 | N115LJ | - | Apr 28, 16:20 UTC | Apr 28, 18:10 UTC | 1h 50m |
| 2026-04-26 | N115LJ | - | Apr 26, 18:10 UTC | Apr 26, 20:15 UTC | 2h 5m |
| 2026-04-26 | N115LJ | - | Apr 26, 14:50 UTC | Apr 26, 15:05 UTC | 15m |
| 2026-04-25 | N115LJ | - | Apr 25, 21:20 UTC | Apr 25, 23:00 UTC | 1h 40m |
| 2026-04-25 | N115LJ | - | Apr 25, 16:40 UTC | Apr 25, 19:15 UTC | 2h 35m |
| 2026-04-23 | N115LJ | - | Apr 23, 21:15 UTC | Apr 23, 22:50 UTC | 1h 35m |
| 2026-04-23 | N115LJ | - | Apr 23, 18:40 UTC | Apr 23, 20:25 UTC | 1h 45m |
| 2026-04-21 | N115LJ | TEB → JLN | Apr 21, 18:20 UTC | Apr 21, 20:50 UTC | 2h 30m |
| 2026-04-21 | N115LJ | - | Apr 21, 15:15 UTC | Apr 21, 17:30 UTC | 2h 15m |
| 2026-04-14 | N115LJ | - | Apr 14, 19:50 UTC | Apr 14, 20:50 UTC | 1h 0m |
| 2026-04-14 | N115LJ | - | Apr 14, 12:50 UTC | Apr 14, 13:50 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 N115LJ page for operator, model, and routing details .