Apparatus

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sensors Mode-S transponder

E4A1C6

ICAO 24-bit transponder address · allocated to Brazil

Hex
E4A1C6
Octal
71120706
Decimal
14,983,622
Country
BR
No current signal · last broadcast Jul 26, 20:35 UTC
Flights observed
54
Distinct callsigns
1
Country
BR
Last broadcast
Jul 26, 20:35 UTC

Last known position

Most recent position reported by Mode-S E4A1C6.

Country allocation

The ICAO 24-bit address E4A1C6 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
PSDET - 54 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 PSDET - Jul 26, 20:20 UTCJul 26, 20:35 UTC15m
2026-07-23 PSDET - Jul 23, 21:55 UTCJul 23, 22:05 UTC10m
2026-07-23 PSDET - Jul 23, 18:00 UTCJul 23, 18:15 UTC15m
2026-07-19 PSDET - Jul 19, 17:45 UTCJul 19, 17:55 UTC10m
2026-07-17 PSDET - Jul 17, 20:35 UTCJul 17, 20:44 UTC10m
2026-07-17 PSDET - Jul 17, 19:20 UTCJul 17, 19:30 UTC10m
2026-07-06 PSDET - Jul 6, 15:10 UTCJul 6, 15:20 UTC10m
2026-07-06 PSDET - Jul 6, 13:40 UTCJul 6, 13:50 UTC10m
2026-07-03 PSDET - Jul 3, 20:05 UTCJul 3, 20:15 UTC10m
2026-06-20 PSDET - Jun 20, 12:54 UTCJun 20, 13:04 UTC10m
2026-06-16 PSDET - Jun 16, 16:10 UTCJun 16, 16:35 UTC25m
2026-06-16 PSDET - Jun 16, 11:10 UTCJun 16, 11:20 UTC10m
2026-06-05 PSDET - Jun 5, 19:55 UTCJun 5, 20:05 UTC10m
2026-06-04 PSDET - Jun 4, 17:10 UTCJun 4, 17:25 UTC15m
2026-06-04 PSDET - Jun 4, 12:15 UTCJun 4, 12:25 UTC10m
2026-06-01 PSDET - Jun 1, 19:35 UTCJun 1, 20:00 UTC25m
2026-05-31 PSDET - May 31, 19:05 UTCMay 31, 19:20 UTC15m
2026-05-25 PSDET - May 25, 13:40 UTCMay 25, 14:10 UTC30m
2026-05-24 PSDET - May 24, 18:05 UTCMay 24, 18:15 UTC10m
2026-05-24 PSDET - May 24, 16:25 UTCMay 24, 17:10 UTC45m
2026-05-22 PSDET - May 22, 19:35 UTCMay 22, 20:15 UTC40m
2026-05-22 PSDET - May 22, 18:55 UTCMay 22, 19:05 UTC10m
2026-05-22 PSDET - May 22, 15:55 UTCMay 22, 16:30 UTC35m
2026-05-22 PSDET - May 22, 15:10 UTCMay 22, 15:20 UTC10m
2026-05-22 PSDET - May 22, 14:05 UTCMay 22, 14:15 UTC10m
2026-05-22 PSDET - May 22, 13:25 UTCMay 22, 13:35 UTC10m
2026-05-21 PSDET - May 21, 21:00 UTCMay 21, 21:10 UTC10m
2026-05-21 PSDET - May 21, 13:50 UTCMay 21, 14:15 UTC25m
2026-05-21 PSDET - May 21, 11:45 UTCMay 21, 11:55 UTC10m
2026-05-14 PSDET - May 14, 20:55 UTCMay 14, 22:00 UTC1h 5m
2026-05-08 PSDET - May 8, 20:00 UTCMay 8, 20:10 UTC10m
2026-05-04 PSDET - May 4, 14:05 UTCMay 4, 14:45 UTC40m
2026-05-04 PSDET - May 4, 12:45 UTCMay 4, 12:55 UTC10m
2026-05-04 PSDET - May 4, 11:30 UTCMay 4, 11:40 UTC10m
2026-05-01 PSDET - May 1, 12:55 UTCMay 1, 13:05 UTC10m
2026-04-28 PSDET - Apr 28, 21:45 UTCApr 28, 22:25 UTC40m
2026-04-26 PSDET - Apr 26, 13:55 UTCApr 26, 14:05 UTC10m
2026-04-26 PSDET - Apr 26, 11:40 UTCApr 26, 11:55 UTC15m
2026-04-26 PSDET - Apr 26, 09:40 UTCApr 26, 09:55 UTC15m
2026-04-26 PSDET - Apr 26, 08:30 UTCApr 26, 08:45 UTC15m
2026-04-21 PSDET - Apr 21, 15:25 UTCApr 21, 15:35 UTC10m
2026-04-21 PSDET - Apr 21, 14:10 UTCApr 21, 14:35 UTC25m
2026-04-20 PSDET - Apr 20, 21:15 UTCApr 20, 21:55 UTC40m
2026-04-20 PSDET - Apr 20, 17:55 UTCApr 20, 18:15 UTC20m
2026-04-20 PSDET - Apr 20, 16:35 UTCApr 20, 16:50 UTC15m
2026-04-19 PSDET - Apr 19, 15:30 UTCApr 19, 15:45 UTC15m
2026-04-19 PSDET - Apr 19, 13:10 UTCApr 19, 13:25 UTC15m
2026-04-18 PSDET - Apr 18, 12:05 UTCApr 18, 12:15 UTC10m
2026-04-17 PSDET - Apr 17, 17:55 UTCApr 17, 18:20 UTC25m
2026-04-16 PSDET - Apr 16, 20:15 UTCApr 16, 21:10 UTC55m

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.

Mode-S E4A1C6 frequently asked

What is Mode-S code E4A1C6?
E4A1C6 is an ICAO 24-bit transponder address. Allocated to Brazil.
Where is Mode-S E4A1C6 registered?
Mode-S code E4A1C6 is allocated to Brazil (BR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is E4A1C6 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex E4A1C6, octal 71120706, decimal 14,983,622.
What flights does E4A1C6 operate?
Mode-S E4A1C6 has broadcast 1 distinct callsign, including PSDET.