Apparatus

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sensors Mode-S transponder

E4A774

ICAO 24-bit transponder address · allocated to Brazil

Hex
E4A774
Octal
71123564
Decimal
14,985,076
Country
BR
No current signal · last broadcast Jul 23, 20:00 UTC
Flights observed
25
Distinct callsigns
1
Country
BR
Last broadcast
Jul 23, 20:00 UTC

Last known position

Most recent position reported by Mode-S E4A774.

Country allocation

The ICAO 24-bit address E4A774 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
PRDRS - 25 2026-07-23

Recent flights last 25

DateFlightRouteTakeoffLandingDuration
2026-07-23 PRDRS - Jul 23, 18:00 UTCJul 23, 20:00 UTC2h 0m
2026-07-21 PRDRS - Jul 21, 11:40 UTCJul 21, 16:00 UTC4h 20m
2026-07-11 PRDRS - Jul 11, 14:50 UTCJul 11, 15:20 UTC30m
2026-07-09 PRDRS - Jul 9, 02:50 UTCJul 9, 03:10 UTC20m
2026-07-01 PRDRS - Jul 1, 18:15 UTCJul 1, 18:35 UTC20m
2026-07-01 PRDRS - Jul 1, 14:30 UTCJul 1, 14:50 UTC20m
2026-06-30 PRDRS - Jun 30, 18:05 UTCJun 30, 18:35 UTC30m
2026-06-29 PRDRS - Jun 29, 20:19 UTCJun 29, 21:39 UTC1h 20m
2026-06-29 PRDRS - Jun 29, 11:39 UTCJun 29, 12:00 UTC20m
2026-06-23 PRDRS - Jun 23, 19:34 UTCJun 23, 19:55 UTC20m
2026-06-19 PRDRS - Jun 19, 15:19 UTCJun 19, 15:39 UTC20m
2026-06-13 PRDRS - Jun 13, 18:20 UTCJun 13, 18:55 UTC35m
2026-06-08 PRDRS - Jun 8, 20:05 UTCJun 8, 20:30 UTC25m
2026-06-07 PRDRS - Jun 7, 21:05 UTCJun 8, 20:30 UTC23h 25m
2026-06-07 PRDRS - Jun 7, 20:35 UTCJun 7, 21:25 UTC50m
2026-06-04 PRDRS - Jun 4, 16:25 UTCJun 4, 17:00 UTC35m
2026-05-24 PRDRS - May 24, 15:35 UTCMay 24, 16:00 UTC25m
2026-05-21 PRDRS - May 21, 18:25 UTCMay 21, 18:55 UTC30m
2026-05-18 PRDRS - May 18, 22:10 UTCMay 18, 22:55 UTC45m
2026-05-13 PRDRS - May 13, 18:40 UTCMay 13, 19:00 UTC20m
2026-05-09 PRDRS - May 9, 14:45 UTCMay 9, 15:05 UTC20m
2026-05-08 PRDRS - May 8, 13:55 UTCMay 8, 14:25 UTC30m
2026-05-07 PRDRS - May 7, 16:20 UTCMay 7, 16:55 UTC35m
2026-05-06 PRDRS - May 6, 14:35 UTCMay 6, 15:20 UTC45m
2026-05-05 PRDRS - May 5, 18:45 UTCMay 5, 19:20 UTC35m

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 E4A774 frequently asked

What is Mode-S code E4A774?
E4A774 is an ICAO 24-bit transponder address. Allocated to Brazil.
Where is Mode-S E4A774 registered?
Mode-S code E4A774 is allocated to Brazil (BR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is E4A774 broadcasting right now?
No active broadcast right now. Last signal was Jul 23, 20:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex E4A774, octal 71123564, decimal 14,985,076.
What flights does E4A774 operate?
Mode-S E4A774 has broadcast 1 distinct callsign, including PRDRS.