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sensors Mode-S transponder

E4A685

ICAO 24-bit transponder address · allocated to Brazil

Currently assigned to PS-UCA · BELL 505 JetRanger X

Hex
E4A685
Octal
71123205
Decimal
14,984,837
Country
BR
Tail
PS-UCA
Type
B505
No current signal · last broadcast Jul 24, 20:40 UTC
Flights observed
104
Distinct callsigns
1
Country
BR
Last broadcast
Jul 24, 20:40 UTC

Last known position

Most recent position reported by Mode-S E4A685.

Country allocation

The ICAO 24-bit address E4A685 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
PSUCA - 104 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 PSUCA - Jul 24, 20:05 UTCJul 24, 20:40 UTC35m
2026-07-24 PSUCA - Jul 24, 14:35 UTCJul 24, 15:25 UTC50m
2026-07-20 PSUCA - Jul 20, 15:25 UTCJul 20, 17:10 UTC1h 45m
2026-07-20 PSUCA - Jul 20, 13:20 UTCJul 20, 13:30 UTC10m
2026-07-18 PSUCA - Jul 18, 20:00 UTCJul 18, 20:40 UTC40m
2026-07-18 PSUCA - Jul 18, 15:45 UTCJul 18, 16:50 UTC1h 5m
2026-07-18 PSUCA - Jul 18, 00:35 UTCJul 18, 01:25 UTC50m
2026-07-17 PSUCA - Jul 17, 20:04 UTCJul 17, 20:35 UTC30m
2026-07-17 PSUCA - Jul 17, 19:00 UTCJul 17, 19:25 UTC25m
2026-07-17 PSUCA - Jul 17, 17:20 UTCJul 17, 18:00 UTC40m
2026-07-16 PSUCA - Jul 16, 20:15 UTCJul 16, 20:49 UTC35m
2026-07-16 PSUCA - Jul 16, 16:40 UTCJul 16, 17:10 UTC30m
2026-07-15 PSUCA - Jul 15, 17:15 UTCJul 15, 17:30 UTC15m
2026-07-15 PSUCA - Jul 15, 12:00 UTCJul 15, 12:20 UTC20m
2026-07-12 PSUCA - Jul 12, 15:35 UTCJul 12, 16:10 UTC35m
2026-07-12 PSUCA - Jul 12, 12:45 UTCJul 12, 13:30 UTC45m
2026-07-10 PSUCA - Jul 10, 21:25 UTCJul 10, 21:35 UTC10m
2026-07-10 PSUCA - Jul 10, 15:50 UTCJul 10, 16:30 UTC40m
2026-07-06 PSUCA - Jul 6, 20:40 UTCJul 6, 21:10 UTC30m
2026-07-06 PSUCA - Jul 6, 16:25 UTCJul 6, 17:00 UTC35m
2026-06-23 PSUCA - Jun 23, 21:24 UTCJun 23, 22:10 UTC45m
2026-06-23 PSUCA - Jun 23, 12:29 UTCJun 23, 13:05 UTC35m
2026-06-19 PSUCA - Jun 19, 21:49 UTCJun 19, 22:19 UTC30m
2026-06-19 PSUCA - Jun 19, 19:25 UTCJun 19, 19:34 UTC10m
2026-06-19 PSUCA - Jun 19, 10:59 UTCJun 19, 11:20 UTC20m
2026-06-19 PSUCA - Jun 19, 00:00 UTCJun 19, 00:14 UTC14m
2026-06-18 PSUCA - Jun 18, 19:45 UTCJun 18, 19:55 UTC10m
2026-06-18 PSUCA - Jun 18, 19:05 UTCJun 18, 19:15 UTC10m
2026-06-18 PSUCA - Jun 18, 16:20 UTCJun 18, 16:35 UTC15m
2026-06-18 PSUCA - Jun 18, 11:40 UTCJun 18, 11:55 UTC15m
2026-06-17 PSUCA - Jun 17, 20:00 UTCJun 17, 20:35 UTC35m
2026-06-17 PSUCA - Jun 17, 18:00 UTCJun 17, 18:10 UTC10m
2026-06-17 PSUCA - Jun 17, 16:10 UTCJun 17, 17:00 UTC50m
2026-06-16 PSUCA - Jun 16, 23:50 UTCJun 17, 00:15 UTC25m
2026-06-16 PSUCA - Jun 16, 17:35 UTCJun 16, 17:55 UTC20m
2026-06-16 PSUCA - Jun 16, 16:45 UTCJun 16, 17:05 UTC20m
2026-06-16 PSUCA RTE → RTE Jun 16, 14:55 UTCJun 16, 15:20 UTC25m
2026-06-07 PSUCA - Jun 7, 19:10 UTCJun 7, 19:35 UTC25m
2026-06-07 PSUCA - Jun 7, 16:50 UTCJun 7, 17:05 UTC15m
2026-06-07 PSUCA - Jun 7, 16:00 UTCJun 7, 16:15 UTC15m
2026-06-04 PSUCA - Jun 4, 14:15 UTCJun 4, 14:30 UTC15m
2026-06-04 PSUCA - Jun 4, 12:40 UTCJun 4, 12:55 UTC15m
2026-06-03 PSUCA - Jun 3, 18:15 UTCJun 3, 18:35 UTC20m
2026-06-03 PSUCA - Jun 3, 16:50 UTCJun 3, 17:10 UTC20m
2026-06-03 PSUCA - Jun 3, 14:20 UTCJun 3, 14:30 UTC10m
2026-06-03 PSUCA - Jun 3, 12:45 UTCJun 3, 13:30 UTC45m
2026-06-02 PSUCA - Jun 2, 18:50 UTCJun 2, 19:40 UTC50m
2026-06-02 PSUCA - Jun 2, 17:25 UTCJun 2, 17:50 UTC25m
2026-06-02 PSUCA - Jun 2, 15:55 UTCJun 2, 16:20 UTC25m
2026-06-02 PSUCA - Jun 2, 11:40 UTCJun 2, 12:00 UTC20m

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 PS-UCA page for operator, model, and routing details .

Mode-S E4A685 frequently asked

What is Mode-S code E4A685?
E4A685 is an ICAO 24-bit transponder address. Allocated to Brazil. Assigned to PS-UCA.
Where is Mode-S E4A685 registered?
Mode-S code E4A685 is allocated to Brazil (BR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is E4A685 broadcasting right now?
No active broadcast right now. Last signal was Jul 24, 20:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex E4A685, octal 71123205, decimal 14,984,837.
What flights does E4A685 operate?
Mode-S E4A685 has broadcast 1 distinct callsign, including PSUCA.