sensors Mode-S transponder
A66970
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N512FX · BOMBARDIER BD-100 Challenger 350 · operated by TOBIN JOSEPH, NYLIFE LLC, CHARLIE 300 LLC, KELLEY AUTOMOTIVE GROUP LLC, CROSBY CHRISTOPHER J JR, KIRO FLEX LLC
- Hex
- A66970
- Octal
- 51464560
- Decimal
- 10,905,968
- Country
- US
- Tail
- N512FX
- Type
- CL35
- Flights observed
- 164
- Distinct callsigns
- 2
- Country
- US
- Last broadcast
- 15h ago
Last known position
Country allocation
The ICAO 24-bit address A66970 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 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-13 | 00000000 | - | Jul 13, 18:35 UTC | Jul 13, 20:00 UTC | 1h 25m |
| 2026-07-11 | LXJ512 | - | Jul 11, 20:00 UTC | Jul 11, 21:55 UTC | 1h 55m |
| 2026-07-11 | LXJ512 | - | Jul 11, 17:30 UTC | Jul 11, 18:40 UTC | 1h 10m |
| 2026-07-11 | LXJ512 | - | Jul 11, 15:10 UTC | Jul 11, 16:25 UTC | 1h 15m |
| 2026-07-11 | LXJ512 | - | Jul 11, 13:40 UTC | Jul 11, 13:55 UTC | 15m |
| 2026-07-07 | LXJ512 | - | Jul 7, 19:15 UTC | Jul 7, 21:50 UTC | 2h 35m |
| 2026-07-07 | LXJ512 | - | Jul 7, 14:55 UTC | Jul 7, 15:30 UTC | 35m |
| 2026-07-07 | LXJ512 | - | Jul 7, 12:35 UTC | Jul 7, 12:50 UTC | 15m |
| 2026-07-06 | LXJ512 | - | Jul 6, 16:55 UTC | Jul 6, 21:50 UTC | 4h 55m |
| 2026-07-06 | LXJ512 | BFI → SEA | Jul 6, 15:15 UTC | Jul 6, 15:30 UTC | 15m |
| 2026-07-05 | LXJ512 | - | Jul 5, 18:20 UTC | Jul 5, 23:40 UTC | 5h 20m |
| 2026-07-05 | LXJ512 | - | Jul 5, 15:40 UTC | Jul 5, 16:25 UTC | 45m |
| 2026-07-03 | LXJ512 | IAD → TEB | Jul 3, 01:30 UTC | Jul 3, 02:15 UTC | 45m |
| 2026-07-02 | LXJ512 | - | Jul 2, 22:45 UTC | Jul 3, 00:00 UTC | 1h 15m |
| 2026-07-02 | LXJ512 | - | Jul 2, 17:45 UTC | Jul 2, 19:35 UTC | 1h 50m |
| 2026-07-01 | LXJ512 | - | Jul 1, 20:10 UTC | Jul 2, 00:35 UTC | 4h 25m |
| 2026-07-01 | LXJ512 | - | Jul 1, 17:40 UTC | Jul 1, 19:20 UTC | 1h 40m |
| 2026-06-30 | LXJ512 | - | Jun 30, 22:45 UTC | Jul 1, 19:20 UTC | 20h 35m |
| 2026-06-30 | LXJ512 | - | Jun 30, 19:10 UTC | Jun 30, 21:10 UTC | 2h 0m |
| 2026-06-28 | LXJ512 | - | Jun 28, 21:20 UTC | Jun 28, 22:45 UTC | 1h 25m |
| 2026-06-28 | LXJ512 | - | Jun 28, 18:19 UTC | Jun 28, 20:09 UTC | 1h 50m |
| 2026-06-27 | LXJ512 | - | Jun 27, 04:59 UTC | Jun 27, 06:40 UTC | 1h 40m |
| 2026-06-26 | LXJ512 | - | Jun 26, 12:19 UTC | Jun 26, 22:10 UTC | 9h 50m |
| 2026-06-25 | LXJ512 | - | Jun 25, 21:05 UTC | Jun 25, 21:55 UTC | 50m |
| 2026-06-25 | LXJ512 | - | Jun 25, 14:55 UTC | Jun 25, 19:49 UTC | 4h 55m |
| 2026-06-25 | LXJ512 | - | Jun 25, 13:40 UTC | Jun 25, 13:55 UTC | 15m |
| 2026-06-24 | LXJ512 | - | Jun 24, 15:14 UTC | Jun 24, 18:39 UTC | 3h 25m |
| 2026-06-24 | LXJ512 | - | Jun 24, 13:30 UTC | Jun 24, 13:54 UTC | 25m |
| 2026-06-23 | LXJ512 | - | Jun 23, 15:44 UTC | Jun 23, 17:20 UTC | 1h 35m |
| 2026-06-23 | LXJ512 | - | Jun 23, 13:29 UTC | Jun 23, 14:04 UTC | 35m |
| 2026-06-22 | LXJ512 | - | Jun 22, 21:54 UTC | Jun 22, 22:54 UTC | 1h 0m |
| 2026-06-22 | LXJ512 | - | Jun 22, 19:05 UTC | Jun 22, 20:34 UTC | 1h 30m |
| 2026-06-22 | LXJ512 | - | Jun 22, 13:25 UTC | Jun 22, 17:29 UTC | 4h 5m |
| 2026-06-21 | LXJ512 | - | Jun 21, 19:05 UTC | Jun 21, 21:05 UTC | 2h 0m |
| 2026-06-21 | LXJ512 | - | Jun 21, 11:10 UTC | Jun 21, 12:49 UTC | 1h 40m |
| 2026-06-20 | LXJ512 | - | Jun 20, 12:24 UTC | Jun 20, 13:44 UTC | 1h 20m |
| 2026-06-13 | LXJ512 | - | Jun 13, 14:30 UTC | Jun 13, 19:10 UTC | 4h 40m |
| 2026-06-12 | LXJ512 | - | Jun 12, 21:35 UTC | Jun 12, 23:05 UTC | 1h 30m |
| 2026-06-11 | LXJ512 | - | Jun 11, 20:55 UTC | Jun 11, 23:05 UTC | 2h 10m |
| 2026-06-11 | LXJ512 | - | Jun 11, 17:10 UTC | Jun 11, 20:05 UTC | 2h 55m |
| 2026-06-11 | LXJ512 | - | Jun 11, 15:15 UTC | Jun 11, 15:40 UTC | 25m |
| 2026-06-10 | LXJ512 | - | Jun 10, 18:10 UTC | Jun 10, 20:40 UTC | 2h 30m |
| 2026-06-10 | LXJ512 | - | Jun 10, 14:50 UTC | Jun 10, 15:40 UTC | 50m |
| 2026-06-10 | LXJ512 | - | Jun 10, 12:00 UTC | Jun 10, 13:50 UTC | 1h 50m |
| 2026-06-09 | LXJ512 | - | Jun 9, 21:40 UTC | Jun 9, 22:20 UTC | 40m |
| 2026-06-09 | LXJ512 | SAN → BOS | Jun 9, 15:35 UTC | Jun 9, 20:35 UTC | 5h 0m |
| 2026-06-08 | LXJ512 | - | Jun 8, 23:05 UTC | Jun 8, 23:40 UTC | 35m |
| 2026-06-08 | LXJ512 | LAS → BUR | Jun 8, 20:20 UTC | Jun 8, 21:05 UTC | 45m |
| 2026-06-08 | LXJ512 | - | Jun 8, 18:05 UTC | Jun 8, 18:50 UTC | 45m |
| 2026-06-08 | LXJ512 | - | Jun 8, 01:00 UTC | Jun 8, 05:50 UTC | 4h 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 N512FX page for operator, model, and routing details .