sensors Mode-S transponder
A8C75F
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N665FX · GULFSTREAM G650 · operated by FLEXJET LLC, DUKERTON GROWTH LLC, SHAKLEE CORP, CELTIC BANK CORP, B3FS LLC, ALTIVIA INVESTMENTS LLC
- Hex
- A8C75F
- Octal
- 52143537
- Decimal
- 11,061,087
- Country
- US
- Tail
- N665FX
- Type
- GLF6
- Flights observed
- 49
- Distinct callsigns
- 1
- Country
- US
- Last broadcast
- 16h ago
Last known position
Country allocation
The ICAO 24-bit address A8C75F 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 |
|---|---|---|---|
| LXJ665 | - | 49 | 2026-06-02 |
Recent flights last 49
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-02 | LXJ665 | IBZ → MXP | Jun 2, 11:20 UTC | Jun 2, 12:45 UTC | 1h 25m |
| 2026-06-01 | LXJ665 | - | Jun 1, 04:20 UTC | Jun 1, 11:15 UTC | 6h 55m |
| 2026-06-01 | LXJ665 | - | Jun 1, 00:45 UTC | Jun 1, 04:15 UTC | 3h 30m |
| 2026-05-30 | LXJ665 | - | May 30, 21:25 UTC | May 30, 21:50 UTC | 25m |
| 2026-05-28 | LXJ665 | - | May 28, 10:00 UTC | May 28, 20:05 UTC | 10h 5m |
| 2026-05-27 | LXJ665 | ZRH → LTN | May 27, 12:00 UTC | May 27, 13:25 UTC | 1h 25m |
| 2026-05-26 | LXJ665 | - | May 26, 00:29 UTC | May 26, 07:24 UTC | 6h 55m |
| 2026-05-24 | LXJ665 | - | May 24, 18:00 UTC | May 24, 21:00 UTC | 3h 0m |
| 2026-05-23 | LXJ665 | - | May 23, 20:20 UTC | May 23, 21:25 UTC | 1h 5m |
| 2026-05-22 | LXJ665 | - | May 22, 17:10 UTC | May 22, 18:25 UTC | 1h 15m |
| 2026-05-22 | LXJ665 | - | May 22, 14:00 UTC | May 22, 14:50 UTC | 50m |
| 2026-05-16 | LXJ665 | - | May 16, 23:00 UTC | May 16, 23:20 UTC | 20m |
| 2026-05-16 | LXJ665 | STL → SNA | May 16, 18:25 UTC | May 16, 21:50 UTC | 3h 25m |
| 2026-05-16 | LXJ665 | - | May 16, 16:10 UTC | May 16, 17:15 UTC | 1h 5m |
| 2026-05-15 | LXJ665 | - | May 15, 09:50 UTC | May 15, 22:55 UTC | 13h 4m |
| 2026-05-14 | LXJ665 | - | May 14, 06:15 UTC | May 14, 07:10 UTC | 55m |
| 2026-05-12 | LXJ665 | - | May 12, 23:30 UTC | May 13, 08:50 UTC | 9h 20m |
| 2026-05-11 | LXJ665 | - | May 11, 21:00 UTC | May 11, 22:35 UTC | 1h 34m |
| 2026-05-11 | LXJ665 | OXR → LAS | May 11, 18:15 UTC | May 11, 19:10 UTC | 55m |
| 2026-05-11 | LXJ665 | - | May 11, 16:10 UTC | May 11, 17:00 UTC | 50m |
| 2026-05-11 | LXJ665 | - | May 11, 00:10 UTC | May 11, 01:10 UTC | 1h 0m |
| 2026-05-10 | LXJ665 | - | May 10, 22:05 UTC | May 10, 23:00 UTC | 55m |
| 2026-05-10 | LXJ665 | - | May 10, 19:35 UTC | May 10, 21:00 UTC | 1h 25m |
| 2026-05-07 | LXJ665 | NUQ → BFI | May 7, 19:50 UTC | May 7, 21:35 UTC | 1h 45m |
| 2026-05-07 | LXJ665 | - | May 7, 16:00 UTC | May 7, 16:25 UTC | 25m |
| 2026-05-07 | LXJ665 | - | May 7, 05:30 UTC | May 7, 09:40 UTC | 4h 10m |
| 2026-05-06 | LXJ665 | - | May 6, 19:40 UTC | May 7, 04:35 UTC | 8h 55m |
| 2026-05-05 | LXJ665 | - | May 5, 17:10 UTC | May 5, 19:10 UTC | 2h 0m |
| 2026-05-04 | LXJ665 | - | May 4, 00:10 UTC | May 4, 07:35 UTC | 7h 25m |
| 2026-05-02 | LXJ665 | - | May 2, 22:00 UTC | May 2, 22:25 UTC | 25m |
| 2026-05-02 | LXJ665 | - | May 2, 19:55 UTC | May 2, 20:40 UTC | 45m |
| 2026-05-01 | LXJ665 | - | May 1, 12:10 UTC | May 1, 20:55 UTC | 8h 45m |
| 2026-04-29 | LXJ665 | - | Apr 29, 11:25 UTC | Apr 29, 11:35 UTC | 10m |
| 2026-04-29 | LXJ665 | - | Apr 29, 08:10 UTC | Apr 29, 09:20 UTC | 1h 11m |
| 2026-04-29 | LXJ665 | - | Apr 29, 06:05 UTC | Apr 29, 07:05 UTC | 1h 0m |
| 2026-04-28 | LXJ665 | - | Apr 28, 14:05 UTC | Apr 28, 16:00 UTC | 1h 55m |
| 2026-04-28 | LXJ665 | - | Apr 28, 11:25 UTC | Apr 28, 12:05 UTC | 40m |
| 2026-04-26 | LXJ665 | - | Apr 26, 02:10 UTC | Apr 26, 10:45 UTC | 8h 35m |
| 2026-04-24 | LXJ665 | IAD → ORD | Apr 24, 22:35 UTC | Apr 25, 00:00 UTC | 1h 25m |
| 2026-04-23 | LXJ665 | FAB → IAD | Apr 23, 06:40 UTC | Apr 23, 13:30 UTC | 6h 50m |
| 2026-04-20 | LXJ665 | RTM → FAB | Apr 20, 11:00 UTC | Apr 20, 11:50 UTC | 50m |
| 2026-04-18 | LXJ665 | - | Apr 18, 22:10 UTC | Apr 19, 07:40 UTC | 9h 30m |
| 2026-04-17 | LXJ665 | - | Apr 17, 20:50 UTC | Apr 17, 21:20 UTC | 30m |
| 2026-04-17 | LXJ665 | - | Apr 17, 19:25 UTC | Apr 17, 19:40 UTC | 15m |
| 2026-04-17 | LXJ665 | - | Apr 17, 17:25 UTC | Apr 17, 19:20 UTC | 1h 55m |
| 2026-04-17 | LXJ665 | - | Apr 17, 15:20 UTC | Apr 17, 17:15 UTC | 1h 55m |
| 2026-04-17 | LXJ665 | - | Apr 17, 14:45 UTC | Apr 17, 15:15 UTC | 29m |
| 2026-04-17 | LXJ665 | - | Apr 17, 13:20 UTC | Apr 17, 13:50 UTC | 30m |
| 2026-04-17 | LXJ665 | - | Apr 17, 13:05 UTC | Apr 17, 13:15 UTC | 10m |
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 N665FX page for operator, model, and routing details .