sensors Mode-S transponder
A1683C
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N190AS · PILATUS PC-12 · operated by INTERPORT AVIATION LLC
- Hex
- A1683C
- Octal
- 50264074
- Decimal
- 10,577,980
- Country
- US
- Tail
- N190AS
- Type
- PC12
- Flights observed
- 49
- Distinct callsigns
- 2
- Country
- US
- Last broadcast
- 1d ago
Last known position
Country allocation
The ICAO 24-bit address A1683C 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 2 distinct
Recent flights last 49
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-16 | N190AS | - | Jul 16, 22:30 UTC | Jul 16, 23:44 UTC | 1h 15m |
| 2026-07-16 | N190AS | - | Jul 16, 21:00 UTC | Jul 16, 21:55 UTC | 55m |
| 2026-07-12 | N190AS | IOW → CDW | Jul 12, 19:45 UTC | Jul 12, 23:00 UTC | 3h 15m |
| 2026-07-12 | N190AS | - | Jul 12, 15:35 UTC | Jul 12, 19:01 UTC | 3h 25m |
| 2026-07-08 | N190AS | - | Jul 8, 19:35 UTC | Jul 8, 19:50 UTC | 15m |
| 2026-07-08 | N190AS | - | Jul 8, 17:25 UTC | Jul 8, 19:00 UTC | 1h 35m |
| 2026-07-03 | N190AS | - | Jul 3, 19:15 UTC | Jul 3, 20:55 UTC | 1h 40m |
| 2026-07-03 | N190AS | - | Jul 3, 17:00 UTC | Jul 3, 18:30 UTC | 1h 30m |
| 2026-07-02 | N190AS | - | Jul 2, 17:00 UTC | Jul 2, 20:25 UTC | 3h 25m |
| 2026-07-02 | N190AS | - | Jul 2, 13:05 UTC | Jul 2, 16:15 UTC | 3h 10m |
| 2026-06-30 | N190AS | - | Jun 30, 18:50 UTC | Jun 30, 21:45 UTC | 2h 55m |
| 2026-06-20 | N190AS | - | Jun 20, 12:54 UTC | Jun 20, 16:00 UTC | 3h 5m |
| 2026-06-15 | N190AS | - | Jun 15, 13:20 UTC | Jun 15, 14:55 UTC | 1h 35m |
| 2026-06-12 | N190AS | - | Jun 12, 00:45 UTC | Jun 12, 01:15 UTC | 30m |
| 2026-06-11 | NGF1141 | - | Jun 11, 23:00 UTC | Jun 12, 00:05 UTC | 1h 5m |
| 2026-06-11 | NGF1141 | - | Jun 11, 19:05 UTC | Jun 11, 19:55 UTC | 50m |
| 2026-06-09 | N190AS | - | Jun 9, 22:40 UTC | Jun 9, 23:20 UTC | 40m |
| 2026-06-09 | NGF1141 | - | Jun 9, 20:20 UTC | Jun 9, 21:40 UTC | 1h 20m |
| 2026-06-07 | N190AS | - | Jun 7, 19:15 UTC | Jun 7, 19:50 UTC | 35m |
| 2026-06-07 | N190AS | - | Jun 7, 15:00 UTC | Jun 7, 18:30 UTC | 3h 30m |
| 2026-06-05 | N190AS | SAV → ISM | Jun 5, 13:05 UTC | Jun 5, 14:20 UTC | 1h 15m |
| 2026-06-03 | N190AS | - | Jun 3, 13:50 UTC | Jun 3, 16:05 UTC | 2h 15m |
| 2026-06-03 | N190AS | - | Jun 3, 12:55 UTC | Jun 3, 13:20 UTC | 25m |
| 2026-05-25 | N190AS | - | May 25, 16:25 UTC | May 25, 18:10 UTC | 1h 45m |
| 2026-05-22 | N190AS | - | May 22, 15:55 UTC | May 22, 17:50 UTC | 1h 55m |
| 2026-05-20 | N190AS | - | May 20, 13:25 UTC | May 20, 15:25 UTC | 2h 0m |
| 2026-05-15 | N190AS | - | May 15, 00:05 UTC | May 15, 00:25 UTC | 20m |
| 2026-05-14 | N190AS | - | May 14, 22:05 UTC | May 14, 23:35 UTC | 1h 30m |
| 2026-05-14 | N190AS | - | May 14, 20:15 UTC | May 14, 21:20 UTC | 1h 5m |
| 2026-05-12 | N190AS | - | May 12, 14:55 UTC | May 12, 16:15 UTC | 1h 20m |
| 2026-05-12 | N190AS | - | May 12, 12:30 UTC | May 12, 13:55 UTC | 1h 25m |
| 2026-05-12 | N190AS | - | May 12, 11:40 UTC | May 12, 12:00 UTC | 20m |
| 2026-05-07 | N190AS | - | May 7, 00:05 UTC | May 7, 00:50 UTC | 45m |
| 2026-05-06 | NGF1141 | - | May 6, 22:10 UTC | May 6, 23:25 UTC | 1h 15m |
| 2026-05-06 | NGF1141 | CDW → BWI | May 6, 19:20 UTC | May 6, 20:15 UTC | 55m |
| 2026-05-05 | NGF1141 | - | May 5, 22:50 UTC | May 5, 23:35 UTC | 45m |
| 2026-05-05 | NGF1141 | - | May 5, 20:40 UTC | May 5, 22:01 UTC | 1h 20m |
| 2026-05-05 | NGF1141 | - | May 5, 18:45 UTC | May 5, 19:15 UTC | 30m |
| 2026-05-03 | N190AS | - | May 3, 19:20 UTC | May 3, 21:00 UTC | 1h 40m |
| 2026-04-30 | N190AS | - | Apr 30, 19:40 UTC | Apr 30, 21:55 UTC | 2h 15m |
| 2026-04-23 | N190AS | - | Apr 23, 22:00 UTC | Apr 23, 22:20 UTC | 20m |
| 2026-04-23 | N190AS | SAV → BLM | Apr 23, 18:55 UTC | Apr 23, 21:35 UTC | 2h 40m |
| 2026-04-20 | N190AS | - | Apr 20, 19:00 UTC | Apr 20, 21:50 UTC | 2h 50m |
| 2026-04-18 | N190AS | - | Apr 18, 17:55 UTC | Apr 18, 18:15 UTC | 20m |
| 2026-04-18 | N190AS | - | Apr 18, 16:25 UTC | Apr 18, 17:10 UTC | 45m |
| 2026-04-18 | N190AS | - | Apr 18, 14:15 UTC | Apr 18, 15:20 UTC | 1h 5m |
| 2026-04-18 | N190AS | - | Apr 18, 12:50 UTC | Apr 18, 13:35 UTC | 45m |
| 2026-04-17 | N190AS | - | Apr 17, 19:40 UTC | Apr 17, 19:55 UTC | 15m |
| 2026-04-17 | N190AS | - | Apr 17, 18:00 UTC | Apr 17, 18:50 UTC | 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 N190AS page for operator, model, and routing details .