sensors Mode-S transponder
A7DF1A
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N606SA · GULFSTREAM G650 · operated by TVPX AIRCRAFT SOLUTIONS INC TRUSTEE
- Hex
- A7DF1A
- Octal
- 51757432
- Decimal
- 11,001,626
- Country
- US
- Tail
- N606SA
- Type
- GLF6
- Flights observed
- 49
- Distinct callsigns
- 1
- Country
- US
- Last broadcast
- Jul 26, 19:45 UTC
Current position
Country allocation
The ICAO 24-bit address A7DF1A 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 |
|---|---|---|---|
| N606SA | - | 49 | 2026-07-26 |
Recent flights last 49
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | N606SA | - | Jul 26, 17:15 UTC | Jul 26, 19:45 UTC | 2h 30m |
| 2026-07-26 | N606SA | ATH → BOD | Jul 26, 12:20 UTC | Jul 26, 16:00 UTC | 3h 40m |
| 2026-07-20 | N606SA | - | Jul 20, 10:35 UTC | Jul 20, 11:40 UTC | 1h 5m |
| 2026-07-19 | N606SA | - | Jul 19, 02:00 UTC | Jul 19, 12:10 UTC | 10h 10m |
| 2026-07-15 | N606SA | - | Jul 15, 16:45 UTC | Jul 16, 05:00 UTC | 12h 15m |
| 2026-07-08 | N606SA | - | Jul 8, 15:10 UTC | Jul 8, 16:25 UTC | 1h 15m |
| 2026-07-08 | N606SA | - | Jul 8, 13:05 UTC | Jul 8, 13:50 UTC | 45m |
| 2026-07-08 | N606SA | - | Jul 8, 01:20 UTC | Jul 8, 11:45 UTC | 10h 25m |
| 2026-07-06 | N606SA | - | Jul 6, 18:25 UTC | Jul 7, 05:10 UTC | 10h 45m |
| 2026-07-02 | N606SA | - | Jul 2, 12:55 UTC | Jul 2, 13:20 UTC | 25m |
| 2026-07-02 | N606SA | - | Jul 2, 01:10 UTC | Jul 2, 11:10 UTC | 10h 0m |
| 2026-06-30 | N606SA | - | Jun 30, 08:55 UTC | Jun 30, 20:00 UTC | 11h 5m |
| 2026-06-29 | N606SA | - | Jun 29, 22:30 UTC | Jun 30, 07:35 UTC | 9h 6m |
| 2026-06-29 | N606SA | - | Jun 29, 02:50 UTC | Jun 29, 03:44 UTC | 55m |
| 2026-06-28 | N606SA | - | Jun 28, 21:24 UTC | Jun 28, 22:15 UTC | 50m |
| 2026-06-28 | N606SA | - | Jun 28, 19:14 UTC | Jun 28, 19:59 UTC | 45m |
| 2026-06-28 | N606SA | - | Jun 28, 15:40 UTC | Jun 28, 16:09 UTC | 30m |
| 2026-06-21 | N606SA | - | Jun 21, 13:00 UTC | Jun 21, 13:50 UTC | 50m |
| 2026-06-21 | N606SA | - | Jun 21, 03:19 UTC | Jun 21, 11:20 UTC | 8h 0m |
| 2026-06-19 | N606SA | - | Jun 19, 21:49 UTC | Jun 19, 23:14 UTC | 1h 25m |
| 2026-06-08 | N606SA | - | Jun 8, 02:00 UTC | Jun 8, 03:40 UTC | 1h 40m |
| 2026-06-07 | N606SA | - | Jun 7, 15:25 UTC | Jun 8, 01:00 UTC | 9h 35m |
| 2026-06-03 | N606SA | - | Jun 3, 23:20 UTC | Jun 4, 08:05 UTC | 8h 45m |
| 2026-06-02 | N606SA | - | Jun 2, 18:30 UTC | Jun 3, 03:55 UTC | 9h 25m |
| 2026-06-01 | N606SA | - | Jun 1, 14:10 UTC | Jun 1, 16:45 UTC | 2h 35m |
| 2026-06-01 | N606SA | - | Jun 1, 13:10 UTC | Jun 1, 13:30 UTC | 20m |
| 2026-05-28 | N606SA | - | May 28, 15:15 UTC | May 28, 15:35 UTC | 20m |
| 2026-05-28 | N606SA | - | May 28, 12:20 UTC | May 28, 14:40 UTC | 2h 20m |
| 2026-05-28 | N606SA | - | May 28, 01:55 UTC | May 28, 10:40 UTC | 8h 45m |
| 2026-05-26 | N606SA | - | May 26, 22:20 UTC | May 26, 23:49 UTC | 1h 30m |
| 2026-04-25 | N606SA | - | Apr 25, 23:40 UTC | Apr 26, 01:35 UTC | 1h 55m |
| 2026-04-25 | N606SA | - | Apr 25, 15:40 UTC | Apr 25, 21:45 UTC | 6h 5m |
| 2026-04-24 | N606SA | - | Apr 24, 16:35 UTC | Apr 25, 16:05 UTC | 23h 30m |
| 2026-04-24 | N606SA | - | Apr 24, 11:40 UTC | Apr 24, 18:05 UTC | 6h 25m |
| 2026-04-21 | N606SA | - | Apr 21, 05:45 UTC | Apr 21, 10:40 UTC | 4h 55m |
| 2026-04-18 | N606SA | - | Apr 18, 14:40 UTC | Apr 18, 14:55 UTC | 15m |
| 2026-04-17 | N606SA | - | Apr 17, 05:45 UTC | Apr 17, 06:20 UTC | 35m |
| 2026-04-17 | N606SA | - | Apr 17, 02:25 UTC | Apr 17, 02:40 UTC | 15m |
| 2026-04-16 | N606SA | - | Apr 16, 23:20 UTC | Apr 16, 23:55 UTC | 35m |
| 2026-04-16 | N606SA | - | Apr 16, 21:30 UTC | Apr 16, 23:10 UTC | 1h 40m |
| 2026-04-15 | N606SA | - | Apr 15, 17:15 UTC | Apr 15, 17:55 UTC | 40m |
| 2026-04-15 | N606SA | - | Apr 15, 13:01 UTC | Apr 15, 13:40 UTC | 40m |
| 2026-04-15 | N606SA | - | Apr 15, 12:15 UTC | Apr 15, 12:55 UTC | 40m |
| 2026-04-15 | N606SA | - | Apr 15, 10:25 UTC | Apr 15, 10:45 UTC | 20m |
| 2026-04-15 | N606SA | - | Apr 15, 07:25 UTC | Apr 15, 08:55 UTC | 1h 30m |
| 2026-04-15 | N606SA | - | Apr 15, 05:05 UTC | Apr 15, 06:55 UTC | 1h 50m |
| 2026-04-15 | N606SA | - | Apr 15, 01:00 UTC | Apr 15, 01:30 UTC | 30m |
| 2026-04-13 | N606SA | - | Apr 13, 21:50 UTC | Apr 13, 22:00 UTC | 10m |
| 2026-04-13 | N606SA | - | Apr 13, 20:50 UTC | Apr 13, 21:20 UTC | 30m |
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 N606SA page for operator, model, and routing details .