sensors Mode-S transponder
A8B4CC
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N660FX · GULFSTREAM G650 · operated by FLEXJET LLC, PARAGON PHARMACEUTICAL MANAGEMENT CO, BANK OF UTAH TRUSTEE, TVPX AIRCRAFT SOLUTIONS INC TRUSTEE, COHERENT CORP, BOSC GROWTH LLC
- Hex
- A8B4CC
- Octal
- 52132314
- Decimal
- 11,056,332
- Country
- US
- Tail
- N660FX
- Type
- GLF6
- Flights observed
- 94
- Distinct callsigns
- 1
- Country
- US
- Last broadcast
- 16h ago
Last known position
Country allocation
The ICAO 24-bit address A8B4CC 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 |
|---|---|---|---|
| LXJ660 | - | 94 | 2026-07-17 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-17 | LXJ660 | - | Jul 17, 11:35 UTC | Jul 17, 18:40 UTC | 7h 5m |
| 2026-07-17 | LXJ660 | - | Jul 17, 01:29 UTC | Jul 17, 02:05 UTC | 35m |
| 2026-07-15 | LXJ660 | - | Jul 15, 12:20 UTC | Jul 15, 18:45 UTC | 6h 25m |
| 2026-07-14 | LXJ660 | - | Jul 14, 11:10 UTC | Jul 14, 12:40 UTC | 1h 30m |
| 2026-07-13 | LXJ660 | - | Jul 13, 00:10 UTC | Jul 13, 08:25 UTC | 8h 15m |
| 2026-07-12 | LXJ660 | - | Jul 12, 14:50 UTC | Jul 12, 17:10 UTC | 2h 20m |
| 2026-07-06 | LXJ660 | - | Jul 6, 17:35 UTC | Jul 6, 18:35 UTC | 1h 0m |
| 2026-07-05 | LXJ660 | - | Jul 5, 13:55 UTC | Jul 5, 20:50 UTC | 6h 55m |
| 2026-07-04 | LXJ660 | - | Jul 4, 10:20 UTC | Jul 4, 10:50 UTC | 30m |
| 2026-06-28 | LXJ660 | - | Jun 28, 06:10 UTC | Jun 28, 07:44 UTC | 1h 35m |
| 2026-06-27 | LXJ660 | - | Jun 27, 02:09 UTC | Jun 27, 09:15 UTC | 7h 5m |
| 2026-06-25 | LXJ660 | - | Jun 25, 22:24 UTC | Jun 26, 05:10 UTC | 6h 45m |
| 2026-06-23 | LXJ660 | - | Jun 23, 11:04 UTC | Jun 23, 12:25 UTC | 1h 20m |
| 2026-06-23 | LXJ660 | - | Jun 23, 02:45 UTC | Jun 23, 09:54 UTC | 7h 10m |
| 2026-06-21 | LXJ660 | - | Jun 21, 19:00 UTC | Jun 21, 21:44 UTC | 2h 45m |
| 2026-06-21 | LXJ660 | - | Jun 21, 14:40 UTC | Jun 21, 16:59 UTC | 2h 20m |
| 2026-06-20 | LXJ660 | - | Jun 20, 18:45 UTC | Jun 20, 20:00 UTC | 1h 15m |
| 2026-06-20 | LXJ660 | - | Jun 20, 16:09 UTC | Jun 20, 17:39 UTC | 1h 30m |
| 2026-06-20 | LXJ660 | - | Jun 20, 14:14 UTC | Jun 20, 14:59 UTC | 45m |
| 2026-06-17 | LXJ660 | - | Jun 17, 03:25 UTC | Jun 17, 04:15 UTC | 50m |
| 2026-06-16 | LXJ660 | - | Jun 16, 23:45 UTC | Jun 17, 02:50 UTC | 3h 5m |
| 2026-06-16 | LXJ660 | - | Jun 16, 20:50 UTC | Jun 16, 22:20 UTC | 1h 30m |
| 2026-06-16 | LXJ660 | - | Jun 16, 02:09 UTC | Jun 16, 02:50 UTC | 40m |
| 2026-06-15 | LXJ660 | - | Jun 15, 22:10 UTC | Jun 16, 01:15 UTC | 3h 5m |
| 2026-06-14 | LXJ660 | VNY → MDW | Jun 14, 21:30 UTC | Jun 15, 00:45 UTC | 3h 15m |
| 2026-06-13 | LXJ660 | SFO → VNY | Jun 13, 19:35 UTC | Jun 13, 20:40 UTC | 1h 5m |
| 2026-06-10 | LXJ660 | - | Jun 10, 22:00 UTC | Jun 10, 22:25 UTC | 25m |
| 2026-06-10 | LXJ660 | - | Jun 10, 16:30 UTC | Jun 10, 20:40 UTC | 4h 10m |
| 2026-06-10 | LXJ660 | - | Jun 10, 14:00 UTC | Jun 10, 15:10 UTC | 1h 10m |
| 2026-06-09 | LXJ660 | - | Jun 9, 12:20 UTC | Jun 9, 14:00 UTC | 1h 40m |
| 2026-06-08 | LXJ660 | - | Jun 8, 21:20 UTC | Jun 8, 22:10 UTC | 50m |
| 2026-06-08 | LXJ660 | - | Jun 8, 12:20 UTC | Jun 8, 19:25 UTC | 7h 5m |
| 2026-06-08 | LXJ660 | - | Jun 8, 09:20 UTC | Jun 8, 10:25 UTC | 1h 5m |
| 2026-06-08 | LXJ660 | TRN → NCE | Jun 8, 04:25 UTC | Jun 8, 04:55 UTC | 30m |
| 2026-06-07 | LXJ660 | - | Jun 7, 12:15 UTC | Jun 7, 14:10 UTC | 1h 55m |
| 2026-06-04 | LXJ660 | - | Jun 4, 13:20 UTC | Jun 4, 19:15 UTC | 5h 55m |
| 2026-06-03 | LXJ660 | - | Jun 3, 22:30 UTC | Jun 4, 01:05 UTC | 2h 35m |
| 2026-06-03 | LXJ660 | - | Jun 3, 00:25 UTC | Jun 3, 01:25 UTC | 1h 0m |
| 2026-06-02 | LXJ660 | - | Jun 2, 12:25 UTC | Jun 2, 23:30 UTC | 11h 5m |
| 2026-06-02 | LXJ660 | - | Jun 2, 10:15 UTC | Jun 2, 11:00 UTC | 45m |
| 2026-05-26 | LXJ660 | - | May 26, 11:54 UTC | May 26, 22:25 UTC | 10h 30m |
| 2026-05-26 | LXJ660 | - | May 26, 03:50 UTC | May 26, 10:39 UTC | 6h 50m |
| 2026-05-26 | LXJ660 | - | May 26, 02:00 UTC | May 26, 02:49 UTC | 50m |
| 2026-05-22 | LXJ660 | SJC → DAL | May 22, 17:15 UTC | May 22, 22:20 UTC | 5h 5m |
| 2026-05-22 | LXJ660 | - | May 22, 12:15 UTC | May 22, 15:30 UTC | 3h 15m |
| 2026-05-21 | LXJ660 | - | May 21, 21:25 UTC | May 22, 06:20 UTC | 8h 55m |
| 2026-05-19 | LXJ660 | - | May 19, 22:50 UTC | May 20, 00:05 UTC | 1h 15m |
| 2026-05-19 | LXJ660 | TEB → PTK | May 19, 20:25 UTC | May 19, 21:40 UTC | 1h 15m |
| 2026-05-18 | LXJ660 | - | May 18, 20:35 UTC | May 18, 22:30 UTC | 1h 55m |
| 2026-05-18 | LXJ660 | - | May 18, 17:05 UTC | May 18, 18:55 UTC | 1h 49m |
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 N660FX page for operator, model, and routing details .