sensors Mode-S transponder
E4A647
ICAO 24-bit transponder address · allocated to Brazil
- Hex
- E4A647
- Octal
- 71123107
- Decimal
- 14,984,775
- Country
- BR
- Flights observed
- 25
- Distinct callsigns
- 2
- Country
- BR
- Last broadcast
- Jul 24, 17:20 UTC
Last known position
Country allocation
The ICAO 24-bit address E4A647 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 2 distinct
Recent flights last 25
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-24 | PPLZA | - | Jul 24, 17:05 UTC | Jul 24, 17:20 UTC | 15m |
| 2026-07-24 | PPLZA | - | Jul 24, 10:35 UTC | Jul 24, 11:10 UTC | 35m |
| 2026-07-23 | PPLZA | - | Jul 23, 10:40 UTC | Jul 23, 11:00 UTC | 20m |
| 2026-07-22 | PPLZA | - | Jul 22, 18:05 UTC | Jul 22, 18:30 UTC | 25m |
| 2026-07-22 | PPLZA | - | Jul 22, 11:40 UTC | Jul 22, 12:05 UTC | 25m |
| 2026-07-21 | PPLZA | - | Jul 21, 11:25 UTC | Jul 21, 12:30 UTC | 1h 5m |
| 2026-07-19 | PPLZA | - | Jul 19, 17:45 UTC | Jul 20, 11:30 UTC | 17h 45m |
| 2026-07-19 | PPLZA | - | Jul 19, 16:25 UTC | Jul 19, 17:05 UTC | 40m |
| 2026-07-17 | PPLZA | - | Jul 17, 12:00 UTC | Jul 17, 12:25 UTC | 25m |
| 2026-07-16 | PPLZA | - | Jul 16, 11:25 UTC | Jul 16, 20:15 UTC | 8h 50m |
| 2026-07-15 | PPLZA | - | Jul 15, 17:30 UTC | Jul 16, 11:30 UTC | 18h 0m |
| 2026-07-15 | PPLZA | - | Jul 15, 11:40 UTC | Jul 15, 12:05 UTC | 25m |
| 2026-07-06 | PPLZA | - | Jul 6, 18:30 UTC | Jul 6, 19:00 UTC | 30m |
| 2026-07-06 | PPLZA | - | Jul 6, 11:25 UTC | Jul 6, 12:20 UTC | 55m |
| 2026-06-26 | PPLZA | - | Jun 26, 20:40 UTC | Jun 26, 21:10 UTC | 30m |
| 2026-06-26 | PPLZA | - | Jun 26, 15:54 UTC | Jun 26, 16:14 UTC | 20m |
| 2026-06-26 | PPLZA | - | Jun 26, 10:50 UTC | Jun 26, 11:24 UTC | 35m |
| 2026-06-22 | PPLZA | - | Jun 22, 21:45 UTC | Jun 22, 22:19 UTC | 35m |
| 2026-06-22 | PPLZA | - | Jun 22, 10:15 UTC | Jun 22, 11:14 UTC | 1h 0m |
| 2026-06-17 | PPLZA | - | Jun 17, 21:25 UTC | Jun 17, 22:00 UTC | 35m |
| 2026-06-17 | PPLZA | - | Jun 17, 10:20 UTC | Jun 17, 11:20 UTC | 1h 0m |
| 2026-06-16 | PPLZA | - | Jun 16, 14:55 UTC | Jun 17, 11:20 UTC | 20h 26m |
| 2026-05-30 | PSSFF | - | May 30, 11:45 UTC | May 30, 13:05 UTC | 1h 20m |
| 2026-05-28 | PSSFF | - | May 28, 17:15 UTC | May 29, 11:50 UTC | 18h 35m |
| 2026-05-28 | PSSFF | - | May 28, 15:05 UTC | May 29, 11:50 UTC | 20h 45m |
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.