sensors Mode-S transponder
A724B6
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N56BM · CIRRUS SR-22 · operated by ATLAS AERO LLC
- Hex
- A724B6
- Octal
- 51622266
- Decimal
- 10,953,910
- Country
- US
- Tail
- N56BM
- Type
- SR22
- Flights observed
- 42
- Distinct callsigns
- 2
- Country
- US
- Last broadcast
- Jul 24, 00:55 UTC
Last known position
Country allocation
The ICAO 24-bit address A724B6 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 42
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-24 | N56BM | - | Jul 24, 00:30 UTC | Jul 24, 00:55 UTC | 25m |
| 2026-07-23 | N56BM | - | Jul 23, 23:35 UTC | Jul 23, 23:50 UTC | 15m |
| 2026-07-22 | N56BM | - | Jul 22, 13:05 UTC | Jul 22, 13:30 UTC | 25m |
| 2026-07-22 | N56BM | - | Jul 22, 11:25 UTC | Jul 22, 11:50 UTC | 25m |
| 2026-07-16 | FFL1273 | - | Jul 16, 03:00 UTC | Jul 16, 03:45 UTC | 45m |
| 2026-07-15 | FFL1273 | - | Jul 15, 23:25 UTC | Jul 16, 00:00 UTC | 35m |
| 2026-07-15 | FFL1273 | FAR → FAR | Jul 15, 03:30 UTC | Jul 15, 03:45 UTC | 15m |
| 2026-07-12 | FFL1273 | - | Jul 12, 06:30 UTC | Jul 12, 06:45 UTC | 15m |
| 2026-07-11 | FFL1273 | - | Jul 11, 16:35 UTC | Jul 11, 17:25 UTC | 50m |
| 2026-07-11 | FFL1273 | - | Jul 11, 12:30 UTC | Jul 11, 12:50 UTC | 20m |
| 2026-07-10 | FFL1273 | - | Jul 10, 21:05 UTC | Jul 10, 21:20 UTC | 15m |
| 2026-07-09 | FFL1273 | - | Jul 9, 13:25 UTC | Jul 9, 13:45 UTC | 20m |
| 2026-07-09 | FFL1273 | - | Jul 9, 11:30 UTC | Jul 9, 11:50 UTC | 20m |
| 2026-07-07 | FFL1273 | - | Jul 7, 22:25 UTC | Jul 7, 22:55 UTC | 30m |
| 2026-07-07 | FFL1273 | - | Jul 7, 10:40 UTC | Jul 7, 11:15 UTC | 35m |
| 2026-06-17 | FFL1273 | - | Jun 17, 21:20 UTC | Jun 17, 21:45 UTC | 25m |
| 2026-06-17 | FFL1273 | - | Jun 17, 20:30 UTC | Jun 17, 20:45 UTC | 15m |
| 2026-06-15 | FFL1273 | - | Jun 15, 19:50 UTC | Jun 15, 20:15 UTC | 25m |
| 2026-06-15 | FFL1273 | - | Jun 15, 13:25 UTC | Jun 15, 13:54 UTC | 30m |
| 2026-06-15 | FFL1273 | - | Jun 15, 03:35 UTC | Jun 15, 04:00 UTC | 25m |
| 2026-06-08 | FFL1273 | - | Jun 8, 20:40 UTC | Jun 8, 22:10 UTC | 1h 30m |
| 2026-06-08 | FFL1273 | - | Jun 8, 19:05 UTC | Jun 8, 19:50 UTC | 45m |
| 2026-06-08 | FFL1273 | - | Jun 8, 18:15 UTC | Jun 8, 18:30 UTC | 15m |
| 2026-05-29 | FFL1273 | - | May 29, 20:35 UTC | May 29, 20:45 UTC | 10m |
| 2026-05-29 | FFL1273 | - | May 29, 18:35 UTC | May 29, 18:50 UTC | 15m |
| 2026-05-21 | FFL1273 | - | May 21, 17:35 UTC | May 21, 17:50 UTC | 15m |
| 2026-05-21 | FFL1273 | - | May 21, 15:20 UTC | May 21, 15:55 UTC | 35m |
| 2026-05-06 | FFL1273 | - | May 6, 19:30 UTC | May 6, 21:10 UTC | 1h 40m |
| 2026-05-06 | FFL1273 | - | May 6, 17:30 UTC | May 6, 18:50 UTC | 1h 19m |
| 2026-05-04 | FFL1273 | - | May 4, 18:25 UTC | May 4, 19:55 UTC | 1h 31m |
| 2026-05-04 | FFL1273 | - | May 4, 16:35 UTC | May 4, 17:40 UTC | 1h 5m |
| 2026-04-28 | FFL1273 | - | Apr 28, 16:35 UTC | Apr 28, 16:45 UTC | 10m |
| 2026-04-28 | FFL1273 | - | Apr 28, 14:55 UTC | Apr 28, 16:00 UTC | 1h 5m |
| 2026-04-28 | FFL1273 | - | Apr 28, 12:55 UTC | Apr 28, 14:10 UTC | 1h 15m |
| 2026-04-26 | FFL1273 | - | Apr 26, 14:35 UTC | Apr 26, 15:50 UTC | 1h 15m |
| 2026-04-25 | FFL1273 | - | Apr 25, 18:15 UTC | Apr 25, 19:30 UTC | 1h 15m |
| 2026-04-23 | N56BM | - | Apr 23, 12:45 UTC | Apr 23, 13:10 UTC | 25m |
| 2026-04-21 | N56BM | - | Apr 21, 12:35 UTC | Apr 21, 12:55 UTC | 20m |
| 2026-04-20 | N56BM | - | Apr 20, 20:55 UTC | Apr 20, 21:05 UTC | 10m |
| 2026-04-20 | N56BM | - | Apr 20, 14:50 UTC | Apr 20, 15:10 UTC | 20m |
| 2026-04-20 | N56BM | - | Apr 20, 13:55 UTC | Apr 20, 14:15 UTC | 20m |
| 2026-04-15 | N56BM | - | Apr 15, 20:15 UTC | Apr 15, 20:30 UTC | 15m |
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 N56BM page for operator, model, and routing details .