sensors Mode-S transponder
A9F2D0
ICAO 24-bit transponder address · allocated to United States
- Hex
- A9F2D0
- Octal
- 52371320
- Decimal
- 11,137,744
- Country
- US
- Flights observed
- 39
- Distinct callsigns
- 1
- Country
- US
- Last broadcast
- Jul 22, 17:05 UTC
Last known position
Country allocation
The ICAO 24-bit address A9F2D0 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 |
|---|---|---|---|
| N740CV | - | 39 | 2026-07-22 |
Recent flights last 39
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-22 | N740CV | - | Jul 22, 16:15 UTC | Jul 22, 17:05 UTC | 50m |
| 2026-07-22 | N740CV | - | Jul 22, 12:25 UTC | Jul 22, 15:30 UTC | 3h 5m |
| 2026-07-20 | N740CV | - | Jul 20, 20:00 UTC | Jul 20, 21:50 UTC | 1h 50m |
| 2026-07-20 | N740CV | - | Jul 20, 04:10 UTC | Jul 20, 18:55 UTC | 14h 45m |
| 2026-07-20 | N740CV | - | Jul 20, 00:00 UTC | Jul 20, 02:20 UTC | 2h 20m |
| 2026-07-19 | N740CV | - | Jul 19, 20:25 UTC | Jul 19, 23:10 UTC | 2h 45m |
| 2026-07-19 | N740CV | - | Jul 19, 17:30 UTC | Jul 19, 19:15 UTC | 1h 45m |
| 2026-07-19 | N740CV | - | Jul 19, 13:45 UTC | Jul 19, 16:40 UTC | 2h 55m |
| 2026-07-08 | N740CV | - | Jul 8, 17:40 UTC | Jul 8, 19:10 UTC | 1h 30m |
| 2026-07-01 | N740CV | - | Jul 1, 14:55 UTC | Jul 1, 16:55 UTC | 2h 0m |
| 2026-06-25 | N740CV | - | Jun 25, 13:55 UTC | Jun 25, 14:24 UTC | 30m |
| 2026-06-24 | N740CV | - | Jun 24, 18:55 UTC | Jun 25, 13:24 UTC | 18h 30m |
| 2026-06-24 | N740CV | - | Jun 24, 15:59 UTC | Jun 24, 18:20 UTC | 2h 20m |
| 2026-06-24 | N740CV | - | Jun 24, 12:44 UTC | Jun 24, 15:24 UTC | 2h 40m |
| 2026-06-18 | N740CV | - | Jun 18, 18:05 UTC | Jun 18, 18:25 UTC | 20m |
| 2026-06-18 | N740CV | - | Jun 18, 16:55 UTC | Jun 18, 17:21 UTC | 26m |
| 2026-06-18 | N740CV | - | Jun 18, 15:40 UTC | Jun 18, 16:10 UTC | 30m |
| 2026-06-16 | N740CV | - | Jun 16, 20:05 UTC | Jun 16, 20:30 UTC | 25m |
| 2026-06-16 | N740CV | - | Jun 16, 19:00 UTC | Jun 16, 19:30 UTC | 30m |
| 2026-06-16 | N740CV | - | Jun 16, 15:50 UTC | Jun 16, 18:09 UTC | 2h 20m |
| 2026-06-16 | N740CV | - | Jun 16, 13:00 UTC | Jun 16, 15:20 UTC | 2h 20m |
| 2026-06-14 | N740CV | - | Jun 14, 22:05 UTC | Jun 15, 00:35 UTC | 2h 30m |
| 2026-06-14 | N740CV | - | Jun 14, 19:45 UTC | Jun 14, 21:10 UTC | 1h 25m |
| 2026-06-14 | N740CV | - | Jun 14, 18:05 UTC | Jun 14, 18:20 UTC | 15m |
| 2026-06-12 | N740CV | - | Jun 12, 12:25 UTC | Jun 12, 15:10 UTC | 2h 45m |
| 2026-06-10 | N740CV | - | Jun 10, 12:40 UTC | Jun 10, 15:40 UTC | 3h 0m |
| 2026-05-30 | N740CV | - | May 30, 21:30 UTC | May 30, 22:45 UTC | 1h 15m |
| 2026-05-22 | N740CV | - | May 22, 23:30 UTC | May 23, 02:05 UTC | 2h 35m |
| 2026-05-22 | N740CV | - | May 22, 18:20 UTC | May 22, 20:40 UTC | 2h 20m |
| 2026-05-18 | N740CV | - | May 18, 20:10 UTC | May 18, 23:40 UTC | 3h 30m |
| 2026-05-18 | N740CV | - | May 18, 13:10 UTC | May 18, 14:05 UTC | 55m |
| 2026-05-18 | N740CV | - | May 18, 10:30 UTC | May 18, 12:15 UTC | 1h 45m |
| 2026-05-04 | N740CV | - | May 4, 17:25 UTC | May 4, 20:10 UTC | 2h 46m |
| 2026-05-04 | N740CV | - | May 4, 13:15 UTC | May 4, 15:20 UTC | 2h 5m |
| 2026-04-30 | N740CV | - | Apr 30, 00:20 UTC | Apr 30, 02:55 UTC | 2h 35m |
| 2026-04-29 | N740CV | - | Apr 29, 20:10 UTC | Apr 29, 21:05 UTC | 55m |
| 2026-04-29 | N740CV | - | Apr 29, 17:25 UTC | Apr 29, 19:35 UTC | 2h 10m |
| 2026-04-20 | N740CV | - | Apr 20, 17:05 UTC | Apr 20, 19:20 UTC | 2h 15m |
| 2026-04-20 | N740CV | - | Apr 20, 13:55 UTC | Apr 20, 16:15 UTC | 2h 20m |
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.