sensors Mode-S transponder
A2C823
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N279CF · HAWKER BEECHCRAFT Hawker 750/850 · operated by J JETS INC
- Hex
- A2C823
- Octal
- 50544043
- Decimal
- 10,668,067
- Country
- US
- Tail
- N279CF
- Type
- H25B
- Flights observed
- 62
- Distinct callsigns
- 1
- Country
- US
- Last broadcast
- 4d ago
Last known position
Country allocation
The ICAO 24-bit address A2C823 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 |
|---|---|---|---|
| N279CF | - | 62 | 2026-07-26 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | N279CF | - | Jul 26, 19:05 UTC | Jul 26, 21:20 UTC | 2h 15m |
| 2026-07-26 | N279CF | MCC → SCF | Jul 26, 03:35 UTC | Jul 26, 05:10 UTC | 1h 35m |
| 2026-07-25 | N279CF | - | Jul 25, 21:15 UTC | Jul 25, 22:45 UTC | 1h 30m |
| 2026-07-24 | N279CF | - | Jul 24, 14:25 UTC | Jul 24, 15:20 UTC | 55m |
| 2026-07-23 | N279CF | - | Jul 23, 19:05 UTC | Jul 23, 20:40 UTC | 1h 35m |
| 2026-07-23 | N279CF | - | Jul 23, 16:05 UTC | Jul 23, 18:25 UTC | 2h 20m |
| 2026-07-22 | N279CF | - | Jul 22, 22:50 UTC | Jul 22, 23:45 UTC | 55m |
| 2026-07-22 | N279CF | - | Jul 22, 20:55 UTC | Jul 22, 21:50 UTC | 55m |
| 2026-07-12 | N279CF | LAS → SCF | Jul 12, 20:01 UTC | Jul 12, 21:35 UTC | 1h 35m |
| 2026-07-10 | N279CF | - | Jul 10, 18:55 UTC | Jul 10, 19:50 UTC | 55m |
| 2026-07-10 | N279CF | - | Jul 10, 16:35 UTC | Jul 10, 16:55 UTC | 20m |
| 2026-07-01 | N279CF | - | Jul 1, 22:55 UTC | Jul 2, 00:10 UTC | 1h 15m |
| 2026-06-29 | N279CF | - | Jun 29, 03:25 UTC | Jun 29, 04:45 UTC | 1h 20m |
| 2026-06-28 | N279CF | - | Jun 28, 19:04 UTC | Jun 28, 22:39 UTC | 3h 35m |
| 2026-06-28 | N279CF | - | Jun 28, 17:00 UTC | Jun 28, 18:29 UTC | 1h 30m |
| 2026-06-27 | N279CF | - | Jun 27, 17:44 UTC | Jun 27, 19:24 UTC | 1h 40m |
| 2026-06-26 | N279CF | - | Jun 26, 22:05 UTC | Jun 26, 23:44 UTC | 1h 40m |
| 2026-06-26 | N279CF | - | Jun 26, 19:00 UTC | Jun 26, 20:15 UTC | 1h 15m |
| 2026-06-26 | N279CF | - | Jun 26, 02:09 UTC | Jun 26, 03:34 UTC | 1h 25m |
| 2026-06-25 | N279CF | - | Jun 25, 01:59 UTC | Jun 25, 02:14 UTC | 15m |
| 2026-06-24 | N279CF | LRD → GYR | Jun 24, 23:14 UTC | Jun 25, 01:35 UTC | 2h 20m |
| 2026-06-24 | N279CF | - | Jun 24, 14:20 UTC | Jun 24, 16:19 UTC | 2h 0m |
| 2026-06-24 | N279CF | - | Jun 24, 12:44 UTC | Jun 24, 13:00 UTC | 15m |
| 2026-06-16 | N279CF | - | Jun 16, 20:40 UTC | Jun 16, 22:50 UTC | 2h 10m |
| 2026-06-15 | N279CF | - | Jun 15, 18:20 UTC | Jun 15, 20:20 UTC | 2h 0m |
| 2026-06-14 | N279CF | LUK → SCF | Jun 14, 15:05 UTC | Jun 14, 18:55 UTC | 3h 50m |
| 2026-06-12 | N279CF | - | Jun 12, 15:10 UTC | Jun 12, 18:20 UTC | 3h 10m |
| 2026-05-31 | N279CF | - | May 31, 22:10 UTC | Jun 1, 00:15 UTC | 2h 5m |
| 2026-05-30 | N279CF | - | May 30, 22:15 UTC | May 30, 22:50 UTC | 35m |
| 2026-05-30 | N279CF | - | May 30, 19:20 UTC | May 30, 21:20 UTC | 2h 0m |
| 2026-05-28 | N279CF | - | May 28, 20:25 UTC | May 28, 20:40 UTC | 15m |
| 2026-05-28 | N279CF | - | May 28, 01:15 UTC | May 28, 03:20 UTC | 2h 5m |
| 2026-05-27 | N279CF | - | May 27, 12:05 UTC | May 27, 13:40 UTC | 1h 35m |
| 2026-05-26 | N279CF | - | May 26, 16:59 UTC | May 26, 17:30 UTC | 30m |
| 2026-05-23 | N279CF | - | May 23, 15:20 UTC | May 23, 18:00 UTC | 2h 40m |
| 2026-05-23 | N279CF | - | May 23, 00:10 UTC | May 23, 00:55 UTC | 45m |
| 2026-05-22 | N279CF | - | May 22, 22:50 UTC | May 22, 23:35 UTC | 45m |
| 2026-05-22 | N279CF | - | May 22, 21:10 UTC | May 22, 22:10 UTC | 1h 0m |
| 2026-05-17 | N279CF | - | May 17, 03:25 UTC | May 17, 04:20 UTC | 55m |
| 2026-05-17 | N279CF | OAK → VNY | May 17, 01:55 UTC | May 17, 02:40 UTC | 45m |
| 2026-05-14 | N279CF | VNY → OAK | May 14, 20:20 UTC | May 14, 21:15 UTC | 55m |
| 2026-05-14 | N279CF | - | May 14, 18:00 UTC | May 14, 19:05 UTC | 1h 5m |
| 2026-05-14 | N279CF | - | May 14, 04:50 UTC | May 14, 05:10 UTC | 20m |
| 2026-05-14 | N279CF | - | May 14, 03:50 UTC | May 14, 04:35 UTC | 45m |
| 2026-05-13 | N279CF | - | May 13, 15:30 UTC | May 13, 16:25 UTC | 55m |
| 2026-05-13 | N279CF | - | May 13, 13:50 UTC | May 13, 14:05 UTC | 15m |
| 2026-05-10 | N279CF | - | May 10, 22:45 UTC | May 11, 04:15 UTC | 5h 30m |
| 2026-05-10 | N279CF | - | May 10, 21:44 UTC | May 10, 21:49 UTC | 5m |
| 2026-05-09 | N279CF | - | May 9, 02:50 UTC | May 9, 03:45 UTC | 55m |
| 2026-05-07 | N279CF | - | May 7, 14:20 UTC | May 7, 15:15 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 N279CF page for operator, model, and routing details .