sensors Mode-S transponder
A6F735
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N548SA · operated by MITCHELL STREET AVIATION INC
- Hex
- A6F735
- Octal
- 51573465
- Decimal
- 10,942,261
- Country
- US
- Tail
- N548SA
- Type
- DA62
- Flights observed
- 50
- Distinct callsigns
- 1
- Country
- US
- Last broadcast
- 29d ago
Current position
Country allocation
The ICAO 24-bit address A6F735 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 |
|---|---|---|---|
| N548SA | - | 50 | 2026-07-26 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | N548SA | - | Jul 26, 19:25 UTC | Jul 26, 20:30 UTC | 1h 5m |
| 2026-07-26 | N548SA | - | Jul 26, 16:25 UTC | Jul 26, 17:00 UTC | 35m |
| 2026-07-24 | N548SA | - | Jul 24, 20:05 UTC | Jul 24, 20:45 UTC | 40m |
| 2026-07-19 | N548SA | - | Jul 19, 17:45 UTC | Jul 19, 18:45 UTC | 1h 0m |
| 2026-07-19 | N548SA | - | Jul 19, 16:25 UTC | Jul 19, 17:10 UTC | 45m |
| 2026-07-17 | N548SA | - | Jul 17, 22:10 UTC | Jul 17, 22:45 UTC | 35m |
| 2026-07-17 | N548SA | - | Jul 17, 20:44 UTC | Jul 17, 21:25 UTC | 40m |
| 2026-07-15 | N548SA | - | Jul 15, 22:10 UTC | Jul 15, 23:10 UTC | 1h 0m |
| 2026-07-15 | N548SA | - | Jul 15, 14:25 UTC | Jul 15, 15:25 UTC | 1h 0m |
| 2026-07-06 | N548SA | - | Jul 6, 19:00 UTC | Jul 6, 21:00 UTC | 2h 0m |
| 2026-07-06 | N548SA | - | Jul 6, 15:10 UTC | Jul 6, 17:35 UTC | 2h 25m |
| 2026-07-01 | N548SA | - | Jul 1, 17:55 UTC | Jul 1, 21:35 UTC | 3h 40m |
| 2026-06-30 | N548SA | - | Jun 30, 19:00 UTC | Jun 30, 20:10 UTC | 1h 10m |
| 2026-06-30 | N548SA | - | Jun 30, 13:00 UTC | Jun 30, 14:35 UTC | 1h 35m |
| 2026-06-28 | N548SA | - | Jun 28, 21:30 UTC | Jun 28, 22:34 UTC | 1h 5m |
| 2026-06-28 | N548SA | - | Jun 28, 18:55 UTC | Jun 28, 20:54 UTC | 2h 0m |
| 2026-06-28 | N548SA | - | Jun 28, 16:14 UTC | Jun 28, 17:19 UTC | 1h 5m |
| 2026-06-25 | N548SA | - | Jun 25, 21:59 UTC | Jun 26, 00:20 UTC | 2h 20m |
| 2026-06-25 | N548SA | - | Jun 25, 20:25 UTC | Jun 25, 21:10 UTC | 45m |
| 2026-06-25 | N548SA | - | Jun 25, 19:05 UTC | Jun 25, 19:39 UTC | 35m |
| 2026-06-25 | N548SA | - | Jun 25, 15:24 UTC | Jun 25, 17:39 UTC | 2h 15m |
| 2026-06-25 | N548SA | - | Jun 25, 12:44 UTC | Jun 25, 14:09 UTC | 1h 25m |
| 2026-06-22 | N548SA | - | Jun 22, 18:04 UTC | Jun 22, 19:09 UTC | 1h 5m |
| 2026-06-22 | N548SA | - | Jun 22, 15:45 UTC | Jun 22, 17:20 UTC | 1h 35m |
| 2026-06-22 | N548SA | - | Jun 22, 13:14 UTC | Jun 22, 14:29 UTC | 1h 15m |
| 2026-06-15 | N548SA | - | Jun 15, 18:55 UTC | Jun 15, 19:30 UTC | 35m |
| 2026-06-15 | N548SA | - | Jun 15, 16:55 UTC | Jun 15, 17:34 UTC | 40m |
| 2026-06-13 | N548SA | - | Jun 13, 23:30 UTC | Jun 14, 00:40 UTC | 1h 10m |
| 2026-06-13 | N548SA | - | Jun 13, 19:25 UTC | Jun 13, 21:00 UTC | 1h 35m |
| 2026-06-07 | N548SA | - | Jun 7, 19:05 UTC | Jun 7, 20:30 UTC | 1h 25m |
| 2026-06-07 | N548SA | - | Jun 7, 16:20 UTC | Jun 7, 17:40 UTC | 1h 20m |
| 2026-05-31 | N548SA | - | May 31, 21:00 UTC | May 31, 23:10 UTC | 2h 10m |
| 2026-05-31 | N548SA | - | May 31, 19:20 UTC | May 31, 20:30 UTC | 1h 10m |
| 2026-05-31 | N548SA | - | May 31, 17:50 UTC | May 31, 18:20 UTC | 30m |
| 2026-05-28 | N548SA | - | May 28, 19:05 UTC | May 28, 19:25 UTC | 20m |
| 2026-05-28 | N548SA | - | May 28, 16:45 UTC | May 28, 17:45 UTC | 1h 0m |
| 2026-05-28 | N548SA | - | May 28, 14:00 UTC | May 28, 16:05 UTC | 2h 5m |
| 2026-05-23 | N548SA | - | May 23, 15:40 UTC | May 23, 16:40 UTC | 1h 0m |
| 2026-05-23 | N548SA | - | May 23, 14:10 UTC | May 23, 15:05 UTC | 55m |
| 2026-05-20 | N548SA | - | May 20, 14:20 UTC | May 20, 15:20 UTC | 1h 0m |
| 2026-05-20 | N548SA | - | May 20, 12:45 UTC | May 20, 13:45 UTC | 1h 0m |
| 2026-05-16 | N548SA | - | May 16, 21:05 UTC | May 16, 22:00 UTC | 55m |
| 2026-05-16 | N548SA | - | May 16, 13:51 UTC | May 16, 15:01 UTC | 1h 10m |
| 2026-05-15 | N548SA | - | May 15, 18:50 UTC | May 15, 19:30 UTC | 40m |
| 2026-05-15 | N548SA | - | May 15, 17:40 UTC | May 15, 18:20 UTC | 40m |
| 2026-05-06 | N548SA | - | May 6, 18:45 UTC | May 6, 20:50 UTC | 2h 5m |
| 2026-05-06 | N548SA | - | May 6, 15:35 UTC | May 6, 18:00 UTC | 2h 24m |
| 2026-04-19 | N548SA | - | Apr 19, 20:35 UTC | Apr 19, 21:25 UTC | 50m |
| 2026-04-19 | N548SA | - | Apr 19, 13:50 UTC | Apr 19, 14:45 UTC | 55m |
| 2026-04-12 | N548SA | - | Apr 12, 17:30 UTC | Apr 12, 19:20 UTC | 1h 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 N548SA page for operator, model, and routing details .