sensors Mode-S transponder
E4A43C
ICAO 24-bit transponder address · allocated to Brazil
- Hex
- E4A43C
- Octal
- 71122074
- Decimal
- 14,984,252
- Country
- BR
- Flights observed
- 23
- Distinct callsigns
- 1
- Country
- BR
- Last broadcast
- Jul 26, 15:35 UTC
Last known position
Country allocation
The ICAO 24-bit address E4A43C falls within the block assigned to Brazil (BR) by ICAO Annex 10, Volume III. Every aircraft registered in Brazil 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 |
|---|---|---|---|
| PSPEN | - | 23 | 2026-07-26 |
Recent flights last 23
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | PSPEN | - | Jul 26, 13:40 UTC | Jul 26, 15:35 UTC | 1h 55m |
| 2026-07-26 | PSPEN | - | Jul 26, 10:40 UTC | Jul 26, 11:30 UTC | 50m |
| 2026-06-28 | PSPEN | - | Jun 28, 10:19 UTC | Jun 28, 11:29 UTC | 1h 10m |
| 2026-06-26 | PSPEN | - | Jun 26, 14:50 UTC | Jun 26, 15:15 UTC | 25m |
| 2026-06-24 | PSPEN | - | Jun 24, 21:00 UTC | Jun 24, 22:04 UTC | 1h 5m |
| 2026-06-23 | PSPEN | - | Jun 23, 14:10 UTC | Jun 23, 14:55 UTC | 45m |
| 2026-06-20 | PSPEN | - | Jun 20, 23:59 UTC | Jun 21, 00:19 UTC | 20m |
| 2026-06-20 | PSPEN | - | Jun 20, 10:34 UTC | Jun 20, 10:55 UTC | 20m |
| 2026-06-04 | PSPEN | - | Jun 4, 14:45 UTC | Jun 4, 22:05 UTC | 7h 20m |
| 2026-05-30 | PSPEN | - | May 30, 23:50 UTC | May 31, 01:11 UTC | 1h 21m |
| 2026-05-28 | PSPEN | - | May 28, 20:20 UTC | May 29, 10:10 UTC | 13h 50m |
| 2026-05-28 | PSPEN | - | May 28, 17:45 UTC | May 28, 18:55 UTC | 1h 10m |
| 2026-05-25 | PSPEN | - | May 25, 03:20 UTC | May 25, 03:45 UTC | 25m |
| 2026-05-23 | PSPEN | - | May 23, 09:25 UTC | May 23, 10:05 UTC | 40m |
| 2026-05-22 | PSPEN | - | May 22, 22:20 UTC | May 22, 22:30 UTC | 10m |
| 2026-05-22 | PSPEN | - | May 22, 16:20 UTC | May 22, 17:00 UTC | 40m |
| 2026-05-11 | PSPEN | - | May 11, 17:15 UTC | May 11, 18:05 UTC | 50m |
| 2026-05-03 | PSPEN | - | May 3, 23:00 UTC | May 4, 00:00 UTC | 1h 0m |
| 2026-05-01 | PSPEN | - | May 1, 15:45 UTC | May 1, 16:35 UTC | 50m |
| 2026-04-18 | PSPEN | - | Apr 18, 23:30 UTC | Apr 19, 00:15 UTC | 45m |
| 2026-04-18 | PSPEN | - | Apr 18, 11:00 UTC | Apr 18, 11:10 UTC | 10m |
| 2026-04-17 | PSPEN | - | Apr 17, 10:15 UTC | Apr 17, 10:40 UTC | 25m |
| 2026-04-12 | PSPEN | - | Apr 12, 19:50 UTC | Apr 12, 20:15 UTC | 25m |
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.