sensors Mode-S transponder
A3183C
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N299PP · EMBRAER EMB-505 Phenom 300 · operated by CASTLE AVIATION II LLC
- Hex
- A3183C
- Octal
- 50614074
- Decimal
- 10,688,572
- Country
- US
- Tail
- N299PP
- Type
- E55P
- Flights observed
- 49
- Distinct callsigns
- 1
- Country
- US
- Last broadcast
- Jul 18, 18:55 UTC
Last known position
Country allocation
The ICAO 24-bit address A3183C 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 |
|---|---|---|---|
| N299PP | - | 49 | 2026-07-18 |
Recent flights last 49
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-18 | N299PP | - | Jul 18, 18:20 UTC | Jul 18, 18:55 UTC | 35m |
| 2026-07-18 | N299PP | - | Jul 18, 17:00 UTC | Jul 18, 17:40 UTC | 40m |
| 2026-07-15 | N299PP | - | Jul 15, 20:55 UTC | Jul 15, 21:30 UTC | 35m |
| 2026-07-15 | N299PP | - | Jul 15, 19:30 UTC | Jul 15, 20:20 UTC | 50m |
| 2026-07-10 | N299PP | - | Jul 10, 14:40 UTC | Jul 10, 15:35 UTC | 55m |
| 2026-07-10 | N299PP | - | Jul 10, 13:00 UTC | Jul 10, 14:00 UTC | 1h 0m |
| 2026-07-07 | N299PP | - | Jul 7, 17:55 UTC | Jul 7, 18:55 UTC | 1h 0m |
| 2026-07-07 | N299PP | - | Jul 7, 14:15 UTC | Jul 7, 15:20 UTC | 1h 5m |
| 2026-06-30 | N299PP | - | Jun 30, 01:04 UTC | Jun 30, 01:30 UTC | 26m |
| 2026-06-29 | N299PP | - | Jun 29, 22:24 UTC | Jun 29, 22:49 UTC | 25m |
| 2026-06-26 | N299PP | - | Jun 26, 19:14 UTC | Jun 26, 20:10 UTC | 55m |
| 2026-06-24 | N299PP | - | Jun 24, 13:34 UTC | Jun 24, 14:34 UTC | 1h 0m |
| 2026-06-24 | N299PP | - | Jun 24, 12:30 UTC | Jun 24, 12:44 UTC | 15m |
| 2026-06-18 | N299PP | - | Jun 18, 16:45 UTC | Jun 18, 17:40 UTC | 55m |
| 2026-06-17 | N299PP | - | Jun 17, 17:05 UTC | Jun 17, 17:40 UTC | 35m |
| 2026-06-16 | N299PP | - | Jun 16, 17:24 UTC | Jun 16, 19:00 UTC | 1h 35m |
| 2026-06-11 | N299PP | - | Jun 11, 16:10 UTC | Jun 11, 16:40 UTC | 30m |
| 2026-06-09 | N299PP | - | Jun 9, 20:25 UTC | Jun 9, 20:35 UTC | 10m |
| 2026-06-08 | N299PP | - | Jun 8, 21:40 UTC | Jun 8, 22:25 UTC | 45m |
| 2026-06-08 | N299PP | - | Jun 8, 16:20 UTC | Jun 8, 17:05 UTC | 45m |
| 2026-06-01 | N299PP | - | Jun 1, 00:55 UTC | Jun 1, 02:05 UTC | 1h 10m |
| 2026-05-31 | N299PP | - | May 31, 21:50 UTC | May 31, 23:15 UTC | 1h 25m |
| 2026-05-31 | N299PP | - | May 31, 20:50 UTC | May 31, 21:15 UTC | 25m |
| 2026-05-31 | N299PP | - | May 31, 19:10 UTC | May 31, 19:35 UTC | 25m |
| 2026-05-29 | N299PP | - | May 29, 20:40 UTC | May 29, 21:10 UTC | 30m |
| 2026-05-29 | N299PP | - | May 29, 16:30 UTC | May 29, 17:00 UTC | 30m |
| 2026-05-26 | N299PP | - | May 26, 22:50 UTC | May 26, 22:59 UTC | 10m |
| 2026-05-26 | N299PP | - | May 26, 12:10 UTC | May 26, 13:40 UTC | 1h 30m |
| 2026-05-23 | N299PP | - | May 23, 13:30 UTC | May 23, 13:55 UTC | 25m |
| 2026-05-23 | N299PP | - | May 23, 11:55 UTC | May 23, 12:25 UTC | 30m |
| 2026-05-21 | N299PP | - | May 21, 21:45 UTC | May 21, 22:15 UTC | 30m |
| 2026-05-21 | N299PP | - | May 21, 19:20 UTC | May 21, 20:55 UTC | 1h 35m |
| 2026-05-21 | N299PP | - | May 21, 15:10 UTC | May 21, 16:55 UTC | 1h 45m |
| 2026-05-21 | N299PP | - | May 21, 13:40 UTC | May 21, 13:55 UTC | 15m |
| 2026-05-19 | N299PP | - | May 19, 16:15 UTC | May 19, 17:00 UTC | 45m |
| 2026-05-19 | N299PP | - | May 19, 12:55 UTC | May 19, 14:00 UTC | 1h 5m |
| 2026-05-10 | N299PP | - | May 10, 17:15 UTC | May 10, 17:40 UTC | 25m |
| 2026-05-10 | N299PP | - | May 10, 16:14 UTC | May 10, 16:40 UTC | 25m |
| 2026-05-08 | N299PP | - | May 8, 20:10 UTC | May 8, 20:45 UTC | 35m |
| 2026-05-08 | N299PP | - | May 8, 17:45 UTC | May 8, 18:10 UTC | 25m |
| 2026-05-06 | N299PP | - | May 6, 20:05 UTC | May 6, 20:25 UTC | 20m |
| 2026-05-06 | N299PP | - | May 6, 12:55 UTC | May 6, 13:25 UTC | 30m |
| 2026-04-30 | N299PP | - | Apr 30, 18:15 UTC | Apr 30, 19:25 UTC | 1h 10m |
| 2026-04-30 | N299PP | - | Apr 30, 12:10 UTC | Apr 30, 13:20 UTC | 1h 10m |
| 2026-04-28 | N299PP | - | Apr 28, 21:05 UTC | Apr 28, 22:00 UTC | 55m |
| 2026-04-27 | N299PP | - | Apr 27, 18:25 UTC | Apr 27, 19:45 UTC | 1h 20m |
| 2026-04-17 | N299PP | - | Apr 17, 18:05 UTC | Apr 17, 19:05 UTC | 1h 0m |
| 2026-04-15 | N299PP | - | Apr 15, 21:10 UTC | Apr 15, 21:40 UTC | 30m |
| 2026-04-14 | N299PP | - | Apr 14, 13:20 UTC | Apr 14, 14:25 UTC | 1h 5m |
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 N299PP page for operator, model, and routing details .