sensors Mode-S transponder
A0C8C0
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N15KJ · CESSNA 700 Citation Longitude · operated by SOVEREIGN SKIES LLC
- Hex
- A0C8C0
- Octal
- 50144300
- Decimal
- 10,537,152
- Country
- US
- Tail
- N15KJ
- Type
- C700
- Flights observed
- 57
- Distinct callsigns
- 1
- Country
- US
- Last broadcast
- 25d ago
Last known position
Country allocation
The ICAO 24-bit address A0C8C0 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 |
|---|---|---|---|
| N15KJ | - | 57 | 2026-07-26 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | N15KJ | - | Jul 26, 11:20 UTC | Jul 26, 17:45 UTC | 6h 25m |
| 2026-07-23 | N15KJ | - | Jul 23, 16:55 UTC | Jul 23, 19:05 UTC | 2h 10m |
| 2026-07-23 | N15KJ | - | Jul 23, 14:15 UTC | Jul 23, 16:15 UTC | 2h 0m |
| 2026-07-20 | N15KJ | - | Jul 20, 16:10 UTC | Jul 20, 18:30 UTC | 2h 20m |
| 2026-06-25 | N15KJ | - | Jun 25, 18:19 UTC | Jun 25, 18:29 UTC | 10m |
| 2026-06-25 | N15KJ | - | Jun 25, 14:55 UTC | Jun 25, 17:20 UTC | 2h 25m |
| 2026-06-21 | N15KJ | - | Jun 21, 18:25 UTC | Jun 21, 19:05 UTC | 40m |
| 2026-06-21 | N15KJ | - | Jun 21, 15:49 UTC | Jun 21, 17:29 UTC | 1h 40m |
| 2026-06-18 | N15KJ | - | Jun 18, 18:05 UTC | Jun 18, 18:15 UTC | 10m |
| 2026-06-18 | N15KJ | - | Jun 18, 14:01 UTC | Jun 18, 16:50 UTC | 2h 50m |
| 2026-06-15 | N15KJ | - | Jun 15, 21:14 UTC | Jun 16, 02:54 UTC | 5h 40m |
| 2026-06-14 | N15KJ | - | Jun 14, 17:25 UTC | Jun 15, 00:05 UTC | 6h 40m |
| 2026-06-13 | N15KJ | - | Jun 13, 19:55 UTC | Jun 13, 23:05 UTC | 3h 10m |
| 2026-06-13 | N15KJ | - | Jun 13, 15:55 UTC | Jun 13, 16:00 UTC | 5m |
| 2026-06-12 | N15KJ | - | Jun 12, 23:00 UTC | Jun 12, 23:15 UTC | 15m |
| 2026-06-12 | N15KJ | - | Jun 12, 18:01 UTC | Jun 12, 18:30 UTC | 30m |
| 2026-06-12 | N15KJ | - | Jun 12, 14:20 UTC | Jun 12, 17:10 UTC | 2h 50m |
| 2026-06-11 | N15KJ | - | Jun 11, 22:20 UTC | Jun 12, 04:35 UTC | 6h 15m |
| 2026-06-10 | N15KJ | - | Jun 10, 18:25 UTC | Jun 10, 19:05 UTC | 40m |
| 2026-06-09 | N15KJ | - | Jun 9, 11:20 UTC | Jun 9, 20:10 UTC | 8h 50m |
| 2026-06-04 | N15KJ | - | Jun 4, 16:00 UTC | Jun 4, 18:25 UTC | 2h 25m |
| 2026-06-04 | N15KJ | - | Jun 4, 11:00 UTC | Jun 4, 13:05 UTC | 2h 5m |
| 2026-06-03 | N15KJ | - | Jun 3, 14:20 UTC | Jun 3, 21:20 UTC | 7h 0m |
| 2026-06-02 | N15KJ | - | Jun 2, 12:50 UTC | Jun 2, 15:15 UTC | 2h 25m |
| 2026-06-01 | N15KJ | - | Jun 1, 19:35 UTC | Jun 1, 22:15 UTC | 2h 40m |
| 2026-05-29 | N15KJ | - | May 29, 01:45 UTC | May 29, 03:40 UTC | 1h 55m |
| 2026-05-28 | N15KJ | - | May 28, 23:30 UTC | May 29, 01:10 UTC | 1h 40m |
| 2026-05-26 | N15KJ | - | May 26, 14:40 UTC | May 26, 18:10 UTC | 3h 30m |
| 2026-05-26 | N15KJ | - | May 26, 12:00 UTC | May 26, 13:54 UTC | 1h 55m |
| 2026-05-22 | N15KJ | - | May 22, 18:15 UTC | May 22, 20:40 UTC | 2h 25m |
| 2026-05-22 | N15KJ | - | May 22, 13:40 UTC | May 22, 15:35 UTC | 1h 55m |
| 2026-05-21 | N15KJ | - | May 21, 15:15 UTC | May 21, 21:50 UTC | 6h 35m |
| 2026-05-19 | N15KJ | - | May 19, 20:00 UTC | May 19, 22:10 UTC | 2h 10m |
| 2026-05-19 | N15KJ | - | May 19, 13:35 UTC | May 19, 15:55 UTC | 2h 20m |
| 2026-05-15 | N15KJ | - | May 15, 16:05 UTC | May 15, 17:55 UTC | 1h 50m |
| 2026-05-15 | N15KJ | - | May 15, 14:50 UTC | May 15, 15:00 UTC | 10m |
| 2026-05-13 | N15KJ | - | May 13, 13:55 UTC | May 13, 16:10 UTC | 2h 15m |
| 2026-05-12 | N15KJ | - | May 12, 21:20 UTC | May 12, 21:45 UTC | 25m |
| 2026-05-12 | N15KJ | - | May 12, 14:30 UTC | May 12, 15:01 UTC | 30m |
| 2026-05-11 | N15KJ | - | May 11, 19:55 UTC | May 11, 22:05 UTC | 2h 10m |
| 2026-05-10 | N15KJ | - | May 10, 19:19 UTC | May 10, 21:40 UTC | 2h 20m |
| 2026-05-10 | N15KJ | - | May 10, 16:30 UTC | May 10, 18:25 UTC | 1h 55m |
| 2026-05-08 | N15KJ | - | May 8, 15:25 UTC | May 8, 17:25 UTC | 2h 0m |
| 2026-05-07 | N15KJ | - | May 7, 14:35 UTC | May 7, 21:05 UTC | 6h 30m |
| 2026-05-06 | N15KJ | - | May 6, 21:25 UTC | May 6, 23:25 UTC | 2h 0m |
| 2026-05-06 | N15KJ | - | May 6, 15:20 UTC | May 6, 16:45 UTC | 1h 25m |
| 2026-04-30 | N15KJ | - | Apr 30, 22:25 UTC | Apr 30, 23:00 UTC | 35m |
| 2026-04-30 | N15KJ | - | Apr 30, 16:10 UTC | Apr 30, 16:50 UTC | 40m |
| 2026-04-24 | N15KJ | - | Apr 24, 19:05 UTC | Apr 24, 19:55 UTC | 50m |
| 2026-04-23 | N15KJ | - | Apr 23, 14:45 UTC | Apr 23, 15:40 UTC | 55m |
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 N15KJ page for operator, model, and routing details .