sensors Mode-S transponder
A184D6
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N1972M · operated by AMCI INC
- Hex
- A184D6
- Octal
- 50302326
- Decimal
- 10,585,302
- Country
- US
- Tail
- N1972M
- Type
- PA46
- Flights observed
- 37
- Distinct callsigns
- 1
- Country
- US
- Last broadcast
- Jul 23, 18:00 UTC
Last known position
Country allocation
The ICAO 24-bit address A184D6 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 |
|---|---|---|---|
| N1972M | - | 37 | 2026-07-23 |
Recent flights last 37
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-23 | N1972M | - | Jul 23, 16:15 UTC | Jul 23, 18:00 UTC | 1h 45m |
| 2026-07-23 | N1972M | - | Jul 23, 12:05 UTC | Jul 23, 13:55 UTC | 1h 50m |
| 2026-07-21 | N1972M | - | Jul 21, 12:15 UTC | Jul 21, 12:55 UTC | 40m |
| 2026-07-16 | N1972M | - | Jul 16, 12:34 UTC | Jul 16, 13:49 UTC | 1h 15m |
| 2026-07-14 | N1972M | - | Jul 14, 12:20 UTC | Jul 14, 13:10 UTC | 50m |
| 2026-07-07 | N1972M | - | Jul 7, 12:25 UTC | Jul 7, 13:35 UTC | 1h 10m |
| 2026-07-01 | N1972M | - | Jul 1, 20:40 UTC | Jul 1, 22:35 UTC | 1h 55m |
| 2026-07-01 | N1972M | - | Jul 1, 17:30 UTC | Jul 1, 19:10 UTC | 1h 40m |
| 2026-06-25 | N1972M | - | Jun 25, 20:30 UTC | Jun 25, 22:14 UTC | 1h 45m |
| 2026-06-25 | N1972M | - | Jun 25, 17:20 UTC | Jun 25, 19:15 UTC | 1h 55m |
| 2026-06-23 | N1972M | - | Jun 23, 17:20 UTC | Jun 23, 17:34 UTC | 15m |
| 2026-06-23 | N1972M | - | Jun 23, 15:30 UTC | Jun 23, 15:50 UTC | 20m |
| 2026-06-22 | N1972M | - | Jun 22, 14:24 UTC | Jun 22, 14:34 UTC | 10m |
| 2026-06-22 | N1972M | - | Jun 22, 12:54 UTC | Jun 22, 13:14 UTC | 20m |
| 2026-06-17 | N1972M | - | Jun 17, 13:40 UTC | Jun 17, 14:25 UTC | 45m |
| 2026-06-11 | N1972M | - | Jun 11, 12:35 UTC | Jun 11, 13:15 UTC | 40m |
| 2026-06-09 | N1972M | - | Jun 9, 12:20 UTC | Jun 9, 13:55 UTC | 1h 35m |
| 2026-06-04 | N1972M | - | Jun 4, 12:20 UTC | Jun 4, 13:45 UTC | 1h 25m |
| 2026-06-03 | N1972M | - | Jun 3, 12:20 UTC | Jun 3, 13:30 UTC | 1h 10m |
| 2026-05-29 | N1972M | - | May 29, 15:30 UTC | May 29, 16:30 UTC | 1h 0m |
| 2026-05-25 | N1972M | - | May 25, 17:05 UTC | May 25, 18:55 UTC | 1h 50m |
| 2026-05-25 | N1972M | - | May 25, 11:55 UTC | May 25, 13:35 UTC | 1h 40m |
| 2026-05-21 | N1972M | - | May 21, 16:15 UTC | May 21, 18:10 UTC | 1h 55m |
| 2026-05-21 | N1972M | - | May 21, 12:00 UTC | May 21, 13:40 UTC | 1h 40m |
| 2026-05-15 | N1972M | - | May 15, 13:15 UTC | May 15, 14:50 UTC | 1h 34m |
| 2026-05-11 | N1972M | - | May 11, 13:40 UTC | May 11, 15:10 UTC | 1h 30m |
| 2026-04-26 | N1972M | - | Apr 26, 22:00 UTC | Apr 27, 00:00 UTC | 2h 0m |
| 2026-04-26 | N1972M | - | Apr 26, 19:20 UTC | Apr 26, 20:50 UTC | 1h 30m |
| 2026-04-24 | N1972M | - | Apr 24, 20:20 UTC | Apr 24, 22:00 UTC | 1h 40m |
| 2026-04-24 | N1972M | - | Apr 24, 17:55 UTC | Apr 24, 19:25 UTC | 1h 30m |
| 2026-04-17 | N1972M | - | Apr 17, 13:20 UTC | Apr 17, 13:30 UTC | 10m |
| 2026-04-17 | N1972M | - | Apr 17, 11:55 UTC | Apr 17, 13:15 UTC | 1h 20m |
| 2026-04-14 | N1972M | - | Apr 14, 15:45 UTC | Apr 14, 16:05 UTC | 20m |
| 2026-04-14 | N1972M | - | Apr 14, 14:50 UTC | Apr 14, 15:00 UTC | 10m |
| 2026-04-14 | N1972M | - | Apr 14, 14:20 UTC | Apr 14, 14:35 UTC | 15m |
| 2026-04-13 | N1972M | - | Apr 13, 15:50 UTC | Apr 13, 16:05 UTC | 15m |
| 2026-04-13 | N1972M | - | Apr 13, 14:50 UTC | Apr 13, 16:05 UTC | 1h 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 N1972M page for operator, model, and routing details .