sensors Mode-S transponder
A2E743
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N28641 · AMERICAN AA-5 Tiger · operated by CPR PACIFIC LLC
- Hex
- A2E743
- Octal
- 50563503
- Decimal
- 10,676,035
- Country
- US
- Tail
- N28641
- Type
- AA5
- Flights observed
- 34
- Distinct callsigns
- 1
- Country
- US
- Last broadcast
- Jul 25, 20:15 UTC
Last known position
Country allocation
The ICAO 24-bit address A2E743 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 |
|---|---|---|---|
| N28641 | - | 34 | 2026-07-25 |
Recent flights last 34
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-25 | N28641 | - | Jul 25, 18:00 UTC | Jul 25, 20:15 UTC | 2h 15m |
| 2026-07-24 | N28641 | - | Jul 24, 23:00 UTC | Jul 25, 00:35 UTC | 1h 35m |
| 2026-07-21 | N28641 | - | Jul 21, 19:40 UTC | Jul 21, 20:10 UTC | 30m |
| 2026-07-21 | N28641 | - | Jul 21, 00:30 UTC | Jul 21, 01:00 UTC | 30m |
| 2026-07-18 | N28641 | - | Jul 18, 23:30 UTC | Jul 19, 00:25 UTC | 55m |
| 2026-07-18 | N28641 | - | Jul 18, 19:45 UTC | Jul 18, 20:20 UTC | 35m |
| 2026-07-10 | N28641 | - | Jul 10, 21:50 UTC | Jul 10, 22:20 UTC | 30m |
| 2026-07-10 | N28641 | - | Jul 10, 19:15 UTC | Jul 10, 19:50 UTC | 35m |
| 2026-07-03 | N28641 | - | Jul 3, 22:00 UTC | Jul 3, 22:40 UTC | 40m |
| 2026-07-03 | N28641 | - | Jul 3, 19:35 UTC | Jul 3, 20:00 UTC | 25m |
| 2026-06-30 | N28641 | - | Jun 30, 02:30 UTC | Jun 30, 03:00 UTC | 30m |
| 2026-06-28 | N28641 | - | Jun 28, 19:09 UTC | Jun 28, 19:49 UTC | 40m |
| 2026-06-14 | N28641 | - | Jun 14, 20:30 UTC | Jun 14, 21:00 UTC | 30m |
| 2026-06-12 | N28641 | - | Jun 12, 20:20 UTC | Jun 12, 21:35 UTC | 1h 15m |
| 2026-06-12 | N28641 | - | Jun 12, 18:25 UTC | Jun 12, 19:00 UTC | 35m |
| 2026-06-11 | N28641 | - | Jun 11, 18:45 UTC | Jun 11, 20:35 UTC | 1h 50m |
| 2026-06-11 | N28641 | - | Jun 11, 01:55 UTC | Jun 11, 02:35 UTC | 40m |
| 2026-06-07 | N28641 | - | Jun 7, 19:55 UTC | Jun 7, 20:25 UTC | 30m |
| 2026-06-06 | N28641 | - | Jun 6, 19:40 UTC | Jun 6, 20:19 UTC | 40m |
| 2026-05-30 | N28641 | - | May 30, 21:50 UTC | May 30, 22:20 UTC | 30m |
| 2026-05-21 | N28641 | - | May 21, 18:25 UTC | May 21, 19:00 UTC | 35m |
| 2026-05-20 | N28641 | - | May 20, 18:55 UTC | May 20, 19:30 UTC | 35m |
| 2026-05-18 | N28641 | - | May 18, 18:25 UTC | May 18, 20:15 UTC | 1h 49m |
| 2026-05-16 | N28641 | SMO → SMO | May 16, 01:40 UTC | May 16, 02:50 UTC | 1h 10m |
| 2026-05-13 | N28641 | - | May 13, 21:05 UTC | May 13, 22:40 UTC | 1h 35m |
| 2026-05-01 | N28641 | - | May 1, 20:20 UTC | May 1, 22:00 UTC | 1h 40m |
| 2026-04-30 | N28641 | - | Apr 30, 19:30 UTC | Apr 30, 21:20 UTC | 1h 50m |
| 2026-04-24 | N28641 | - | Apr 24, 19:20 UTC | Apr 24, 20:55 UTC | 1h 35m |
| 2026-04-24 | N28641 | - | Apr 24, 16:25 UTC | Apr 24, 17:00 UTC | 35m |
| 2026-04-21 | N28641 | - | Apr 21, 17:10 UTC | Apr 21, 17:30 UTC | 20m |
| 2026-04-20 | N28641 | - | Apr 20, 19:55 UTC | Apr 20, 22:25 UTC | 2h 30m |
| 2026-04-20 | N28641 | - | Apr 20, 01:50 UTC | Apr 20, 02:25 UTC | 35m |
| 2026-04-18 | N28641 | - | Apr 18, 22:40 UTC | Apr 18, 23:10 UTC | 30m |
| 2026-04-14 | N28641 | - | Apr 14, 19:15 UTC | Apr 14, 19:25 UTC | 10m |
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 N28641 page for operator, model, and routing details .