sensors Mode-S transponder
E4A678
ICAO 24-bit transponder address · allocated to Brazil
Currently assigned to PS-TSE · CIRRUS SR-22
- Hex
- E4A678
- Octal
- 71123170
- Decimal
- 14,984,824
- Country
- BR
- Tail
- PS-TSE
- Type
- SR22
- Flights observed
- 44
- Distinct callsigns
- 1
- Country
- BR
- Last broadcast
- 17d ago
Last known position
Country allocation
The ICAO 24-bit address E4A678 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 |
|---|---|---|---|
| PSTSE | - | 44 | 2026-07-26 |
Recent flights last 44
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | PSTSE | - | Jul 26, 01:10 UTC | Jul 26, 01:40 UTC | 30m |
| 2026-07-26 | PSTSE | - | Jul 26, 00:25 UTC | Jul 26, 00:35 UTC | 10m |
| 2026-07-25 | PSTSE | - | Jul 25, 14:10 UTC | Jul 25, 14:40 UTC | 30m |
| 2026-07-17 | PSTSE | - | Jul 17, 20:35 UTC | Jul 17, 21:10 UTC | 35m |
| 2026-07-14 | PSTSE | - | Jul 14, 10:15 UTC | Jul 14, 10:55 UTC | 40m |
| 2026-07-06 | PSTSE | - | Jul 6, 18:15 UTC | Jul 6, 18:40 UTC | 25m |
| 2026-07-06 | PSTSE | - | Jul 6, 14:10 UTC | Jul 6, 14:30 UTC | 20m |
| 2026-06-30 | PSTSE | - | Jun 30, 18:10 UTC | Jun 30, 18:30 UTC | 20m |
| 2026-06-30 | PSTSE | - | Jun 30, 10:30 UTC | Jun 30, 10:50 UTC | 20m |
| 2026-06-19 | PSTSE | - | Jun 19, 20:19 UTC | Jun 19, 20:40 UTC | 20m |
| 2026-06-15 | PSTSE | - | Jun 15, 18:50 UTC | Jun 15, 19:14 UTC | 25m |
| 2026-06-04 | PSTSE | - | Jun 4, 18:10 UTC | Jun 4, 18:35 UTC | 25m |
| 2026-06-04 | PSTSE | - | Jun 4, 15:55 UTC | Jun 4, 16:40 UTC | 45m |
| 2026-06-01 | PSTSE | - | Jun 1, 12:15 UTC | Jun 1, 12:45 UTC | 30m |
| 2026-06-01 | PSTSE | - | Jun 1, 09:55 UTC | Jun 1, 10:25 UTC | 30m |
| 2026-05-18 | PSTSE | - | May 18, 21:50 UTC | May 18, 22:25 UTC | 35m |
| 2026-05-18 | PSTSE | - | May 18, 11:50 UTC | May 18, 12:35 UTC | 45m |
| 2026-05-15 | PSTSE | - | May 15, 21:15 UTC | May 15, 21:55 UTC | 40m |
| 2026-05-15 | PSTSE | - | May 15, 08:05 UTC | May 15, 08:30 UTC | 25m |
| 2026-05-14 | PSTSE | - | May 14, 22:25 UTC | May 14, 22:50 UTC | 25m |
| 2026-05-14 | PSTSE | - | May 14, 21:35 UTC | May 14, 21:45 UTC | 10m |
| 2026-05-14 | PSTSE | - | May 14, 09:55 UTC | May 14, 10:25 UTC | 30m |
| 2026-05-10 | PSTSE | - | May 10, 11:15 UTC | May 10, 11:30 UTC | 15m |
| 2026-05-09 | PSTSE | - | May 9, 17:30 UTC | May 9, 17:49 UTC | 20m |
| 2026-05-08 | PSTSE | - | May 8, 17:05 UTC | May 8, 17:20 UTC | 15m |
| 2026-05-05 | PSTSE | - | May 5, 11:55 UTC | May 5, 12:30 UTC | 35m |
| 2026-05-05 | PSTSE | - | May 5, 09:40 UTC | May 5, 10:05 UTC | 25m |
| 2026-05-04 | PSTSE | - | May 4, 00:05 UTC | May 4, 00:19 UTC | 15m |
| 2026-05-03 | PSTSE | - | May 3, 23:00 UTC | May 3, 23:15 UTC | 15m |
| 2026-05-03 | PSTSE | - | May 3, 13:20 UTC | May 3, 13:50 UTC | 30m |
| 2026-05-02 | PSTSE | - | May 2, 12:45 UTC | May 2, 13:05 UTC | 20m |
| 2026-05-02 | PSTSE | - | May 2, 11:10 UTC | May 2, 11:25 UTC | 15m |
| 2026-05-01 | PSTSE | - | May 1, 17:10 UTC | May 1, 17:40 UTC | 30m |
| 2026-04-28 | PSTSE | - | Apr 28, 09:20 UTC | Apr 28, 09:55 UTC | 35m |
| 2026-04-26 | PSTSE | - | Apr 26, 21:30 UTC | Apr 26, 21:55 UTC | 25m |
| 2026-04-26 | PSTSE | - | Apr 26, 20:15 UTC | Apr 26, 20:45 UTC | 30m |
| 2026-04-25 | PSTSE | - | Apr 25, 13:10 UTC | Apr 25, 13:35 UTC | 25m |
| 2026-04-25 | PSTSE | - | Apr 25, 11:35 UTC | Apr 25, 12:00 UTC | 25m |
| 2026-04-23 | PSTSE | - | Apr 23, 22:50 UTC | Apr 23, 23:30 UTC | 40m |
| 2026-04-22 | PSTSE | - | Apr 22, 10:25 UTC | Apr 22, 11:10 UTC | 45m |
| 2026-04-16 | PSTSE | - | Apr 16, 19:45 UTC | Apr 16, 20:10 UTC | 25m |
| 2026-04-16 | PSTSE | - | Apr 16, 15:15 UTC | Apr 16, 15:35 UTC | 20m |
| 2026-04-15 | PSTSE | - | Apr 15, 21:10 UTC | Apr 15, 21:35 UTC | 25m |
| 2026-04-15 | PSTSE | - | Apr 15, 09:05 UTC | Apr 15, 09:25 UTC | 20m |
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 PS-TSE page for operator, model, and routing details .