sensors Mode-S transponder
E4A66D
ICAO 24-bit transponder address · allocated to Brazil
Currently assigned to PS-SRV · EMBRAER EMB-550 Praetor 600
- Hex
- E4A66D
- Octal
- 71123155
- Decimal
- 14,984,813
- Country
- BR
- Tail
- PS-SRV
- Type
- E550
- Flights observed
- 18
- Distinct callsigns
- 1
- Country
- BR
- Last broadcast
- Jul 24, 22:15 UTC
Last known position
Country allocation
The ICAO 24-bit address E4A66D 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 |
|---|---|---|---|
| PSFRV | - | 18 | 2026-07-24 |
Recent flights last 18
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-24 | PSFRV | - | Jul 24, 22:05 UTC | Jul 24, 22:15 UTC | 10m |
| 2026-06-16 | PSFRV | - | Jun 16, 14:45 UTC | Jun 16, 14:55 UTC | 10m |
| 2026-06-13 | PSFRV | - | Jun 13, 14:40 UTC | Jun 13, 17:45 UTC | 3h 5m |
| 2026-06-11 | PSFRV | - | Jun 11, 17:45 UTC | Jun 11, 18:10 UTC | 25m |
| 2026-06-07 | PSFRV | - | Jun 7, 14:40 UTC | Jun 7, 17:00 UTC | 2h 20m |
| 2026-06-05 | PSFRV | - | Jun 5, 16:10 UTC | Jun 5, 16:50 UTC | 40m |
| 2026-06-04 | PSFRV | - | Jun 4, 20:10 UTC | Jun 5, 14:20 UTC | 18h 10m |
| 2026-06-04 | PSFRV | - | Jun 4, 11:30 UTC | Jun 4, 12:05 UTC | 35m |
| 2026-05-24 | PSFRV | - | May 24, 13:00 UTC | May 24, 14:45 UTC | 1h 45m |
| 2026-05-21 | PSFRV | - | May 21, 18:05 UTC | May 21, 18:20 UTC | 15m |
| 2026-05-21 | PSFRV | - | May 21, 11:10 UTC | May 21, 13:50 UTC | 2h 40m |
| 2026-05-17 | PSFRV | - | May 17, 14:20 UTC | May 17, 15:20 UTC | 1h 0m |
| 2026-05-14 | PSFRV | - | May 14, 18:15 UTC | May 14, 19:20 UTC | 1h 5m |
| 2026-05-12 | PSFRV | - | May 12, 18:45 UTC | May 12, 18:55 UTC | 10m |
| 2026-05-03 | PSFRV | - | May 3, 19:40 UTC | May 3, 19:55 UTC | 15m |
| 2026-05-01 | PSFRV | - | May 1, 13:35 UTC | May 1, 13:45 UTC | 10m |
| 2026-04-26 | PSFRV | - | Apr 26, 14:20 UTC | Apr 26, 15:30 UTC | 1h 10m |
| 2026-04-25 | PSFRV | - | Apr 25, 12:40 UTC | Apr 25, 13:45 UTC | 1h 5m |
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-SRV page for operator, model, and routing details .