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sensors Mode-S transponder

E400B4

ICAO 24-bit transponder address · allocated to Brazil

Currently assigned to 4101 · EMBRAER ERJ-145

Hex
E400B4
Octal
71000264
Decimal
14,942,388
Country
BR
Tail
4101
Type
E145
No current signal · last broadcast Jul 19, 20:10 UTC
Flights observed
41
Distinct callsigns
1
Country
BR
Last broadcast
Jul 19, 20:10 UTC

Last known position

Most recent position reported by Mode-S E400B4.

Country allocation

The ICAO 24-bit address E400B4 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
FAM4101 - 41 2026-07-19

Recent flights last 41

DateFlightRouteTakeoffLandingDuration
2026-07-19 FAM4101 - Jul 19, 19:10 UTCJul 19, 20:10 UTC1h 0m
2026-07-19 FAM4101 - Jul 19, 16:05 UTCJul 19, 16:15 UTC10m
2026-07-14 FAM4101 - Jul 14, 04:05 UTCJul 14, 04:30 UTC25m
2026-07-14 FAM4101 - Jul 14, 02:15 UTCJul 14, 02:35 UTC20m
2026-07-13 FAM4101 - Jul 13, 16:50 UTCJul 13, 17:25 UTC35m
2026-07-09 FAM4101 - Jul 9, 16:05 UTCJul 9, 17:35 UTC1h 30m
2026-07-06 FAM4101 - Jul 6, 16:40 UTCJul 6, 17:35 UTC55m
2026-07-04 FAM4101 - Jul 4, 17:45 UTCJul 4, 18:40 UTC55m
2026-06-30 FAM4101 - Jun 30, 18:20 UTCJun 30, 18:50 UTC30m
2026-06-30 FAM4101 - Jun 30, 03:50 UTCJun 30, 05:00 UTC1h 10m
2026-06-30 FAM4101 - Jun 30, 00:30 UTCJun 30, 00:55 UTC25m
2026-06-29 FAM4101 - Jun 29, 21:50 UTCJun 29, 22:30 UTC40m
2026-06-26 FAM4101 - Jun 26, 17:40 UTCJun 26, 17:54 UTC15m
2026-06-25 FAM4101 - Jun 25, 03:20 UTCJun 25, 03:44 UTC25m
2026-06-24 FAM4101 - Jun 24, 23:50 UTCJun 25, 00:05 UTC15m
2026-06-21 FAM4101 - Jun 21, 03:00 UTCJun 21, 03:30 UTC30m
2026-06-20 FAM4101 - Jun 20, 20:55 UTCJun 20, 21:14 UTC20m
2026-06-18 FAM4101 - Jun 18, 18:20 UTCJun 18, 18:35 UTC15m
2026-06-18 FAM4101 - Jun 18, 04:20 UTCJun 18, 04:55 UTC35m
2026-06-18 FAM4101 - Jun 18, 00:55 UTCJun 18, 01:20 UTC25m
2026-06-17 FAM4101 - Jun 17, 16:55 UTCJun 17, 17:40 UTC45m
2026-06-15 FAM4101 - Jun 15, 18:04 UTCJun 15, 19:00 UTC55m
2026-06-15 FAM4101 - Jun 15, 04:34 UTCJun 15, 05:30 UTC55m
2026-06-15 FAM4101 - Jun 15, 01:40 UTCJun 15, 02:04 UTC25m
2026-06-14 FAM4101 - Jun 14, 20:15 UTCJun 14, 20:40 UTC25m
2026-06-11 FAM4101 - Jun 11, 16:55 UTCJun 11, 17:15 UTC20m
2026-06-11 FAM4101 - Jun 11, 13:45 UTCJun 11, 14:35 UTC50m
2026-06-10 FAM4101 - Jun 10, 15:15 UTCJun 10, 16:35 UTC1h 20m
2026-06-09 FAM4101 - Jun 9, 16:45 UTCJun 9, 17:05 UTC20m
2026-06-09 FAM4101 - Jun 9, 15:30 UTCJun 9, 15:50 UTC20m
2026-06-08 FAM4101 - Jun 8, 17:10 UTCJun 8, 17:25 UTC15m
2026-06-08 FAM4101 - Jun 8, 15:50 UTCJun 8, 16:00 UTC10m
2026-05-29 FAM4101 - May 29, 17:20 UTCMay 29, 17:35 UTC15m
2026-05-29 FAM4101 - May 29, 14:40 UTCMay 29, 15:05 UTC25m
2026-05-24 FAM4101 - May 24, 17:00 UTCMay 24, 18:45 UTC1h 45m
2026-05-22 FAM4101 - May 22, 20:25 UTCMay 22, 21:05 UTC40m
2026-05-19 FAM4101 - May 19, 10:35 UTCMay 19, 11:15 UTC40m
2026-05-19 FAM4101 - May 19, 04:55 UTCMay 19, 05:30 UTC35m
2026-05-14 FAM4101 - May 14, 13:45 UTCMay 14, 19:40 UTC5h 55m
2026-05-13 FAM4101 - May 13, 00:30 UTCMay 13, 01:10 UTC40m
2026-04-24 FAM4101 - Apr 24, 16:20 UTCApr 24, 16:50 UTC30m

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 4101 page for operator, model, and routing details .

Mode-S E400B4 frequently asked

What is Mode-S code E400B4?
E400B4 is an ICAO 24-bit transponder address. Allocated to Brazil. Assigned to 4101.
Where is Mode-S E400B4 registered?
Mode-S code E400B4 is allocated to Brazil (BR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is E400B4 broadcasting right now?
No active broadcast right now. Last signal was Jul 19, 20:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex E400B4, octal 71000264, decimal 14,942,388.
What flights does E400B4 operate?
Mode-S E400B4 has broadcast 1 distinct callsign, including FAM4101.