Apparatus

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sensors Mode-S transponder

E4A4BC

ICAO 24-bit transponder address · allocated to Brazil

Hex
E4A4BC
Octal
71122274
Decimal
14,984,380
Country
BR
No current signal · last broadcast Jul 17, 22:40 UTC
Flights observed
38
Distinct callsigns
1
Country
BR
Last broadcast
Jul 17, 22:40 UTC

Last known position

Most recent position reported by Mode-S E4A4BC.

Country allocation

The ICAO 24-bit address E4A4BC 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
PSWBK - 38 2026-07-17

Recent flights last 38

DateFlightRouteTakeoffLandingDuration
2026-07-17 PSWBK - Jul 17, 22:20 UTCJul 17, 22:40 UTC20m
2026-07-17 PSWBK - Jul 17, 17:15 UTCJul 17, 17:25 UTC10m
2026-07-17 PSWBK - Jul 17, 14:15 UTCJul 17, 14:30 UTC15m
2026-07-17 PSWBK - Jul 17, 13:20 UTCJul 17, 13:29 UTC10m
2026-07-13 PSWBK - Jul 13, 19:30 UTCJul 13, 19:45 UTC15m
2026-07-13 PSWBK - Jul 13, 18:15 UTCJul 13, 18:40 UTC25m
2026-06-30 PSWBK - Jun 30, 21:15 UTCJun 30, 21:50 UTC35m
2026-06-30 PSWBK - Jun 30, 15:05 UTCJun 30, 15:20 UTC15m
2026-06-28 PSWBK - Jun 28, 17:39 UTCJun 28, 18:00 UTC20m
2026-06-28 PSWBK - Jun 28, 15:40 UTCJun 28, 16:09 UTC30m
2026-06-23 PSWBK - Jun 23, 13:34 UTCJun 23, 14:59 UTC1h 25m
2026-06-21 PSWBK - Jun 21, 22:10 UTCJun 21, 22:54 UTC45m
2026-06-21 PSWBK - Jun 21, 18:35 UTCJun 21, 19:20 UTC45m
2026-06-19 PSWBK - Jun 19, 20:44 UTCJun 19, 21:34 UTC50m
2026-06-19 PSWBK - Jun 19, 15:14 UTCJun 19, 16:04 UTC50m
2026-06-14 PSWBK - Jun 14, 16:10 UTCJun 14, 16:35 UTC25m
2026-06-14 PSWBK - Jun 14, 15:40 UTCJun 14, 15:55 UTC15m
2026-06-10 PSWBK - Jun 10, 18:00 UTCJun 10, 18:35 UTC35m
2026-06-10 PSWBK - Jun 10, 12:40 UTCJun 10, 12:50 UTC10m
2026-06-08 PSWBK - Jun 8, 17:55 UTCJun 8, 18:15 UTC20m
2026-06-05 PSWBK - Jun 5, 18:30 UTCJun 5, 18:45 UTC15m
2026-06-04 PSWBK - Jun 4, 13:50 UTCJun 4, 14:05 UTC15m
2026-06-04 PSWBK - Jun 4, 12:45 UTCJun 4, 12:55 UTC10m
2026-05-17 PSWBK - May 17, 18:30 UTCMay 17, 18:50 UTC20m
2026-05-17 PSWBK - May 17, 17:45 UTCMay 17, 17:55 UTC10m
2026-05-15 PSWBK - May 15, 18:50 UTCMay 15, 19:15 UTC25m
2026-05-15 PSWBK - May 15, 17:40 UTCMay 15, 17:50 UTC10m
2026-05-12 PSWBK - May 12, 12:45 UTCMay 12, 13:05 UTC20m
2026-05-12 PSWBK - May 12, 11:00 UTCMay 12, 12:10 UTC1h 10m
2026-05-04 PSWBK - May 4, 16:30 UTCMay 4, 16:50 UTC20m
2026-05-01 PSWBK - May 1, 15:55 UTCMay 1, 16:10 UTC15m
2026-04-30 PSWBK - Apr 30, 19:50 UTCApr 30, 20:15 UTC25m
2026-04-30 PSWBK - Apr 30, 16:55 UTCApr 30, 17:10 UTC15m
2026-04-22 PSWBK - Apr 22, 16:00 UTCApr 22, 16:25 UTC25m
2026-04-22 PSWBK - Apr 22, 12:15 UTCApr 22, 12:30 UTC15m
2026-04-16 PSWBK - Apr 16, 22:10 UTCApr 16, 22:40 UTC30m
2026-04-16 PSWBK - Apr 16, 20:35 UTCApr 16, 20:50 UTC15m
2026-04-13 PSWBK - Apr 13, 17:15 UTCApr 13, 17:25 UTC10m

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 E4A4BC frequently asked

What is Mode-S code E4A4BC?
E4A4BC is an ICAO 24-bit transponder address. Allocated to Brazil.
Where is Mode-S E4A4BC registered?
Mode-S code E4A4BC is allocated to Brazil (BR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is E4A4BC broadcasting right now?
No active broadcast right now. Last signal was Jul 17, 22:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex E4A4BC, octal 71122274, decimal 14,984,380.
What flights does E4A4BC operate?
Mode-S E4A4BC has broadcast 1 distinct callsign, including PSWBK.