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sensors Mode-S transponder

E4991A

ICAO 24-bit transponder address · allocated to Brazil

Currently assigned to PS-LSS · BEECH 200 Super King Air

Hex
E4991A
Octal
71114432
Decimal
14,981,402
Country
BR
Tail
PS-LSS
Type
BE20
No current signal · last broadcast Jul 26, 14:55 UTC
Flights observed
108
Distinct callsigns
1
Country
BR
Last broadcast
Jul 26, 14:55 UTC

Last known position

Most recent position reported by Mode-S E4991A.

Country allocation

The ICAO 24-bit address E4991A 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
PSLSS - 108 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 PSLSS - Jul 26, 13:50 UTCJul 26, 14:55 UTC1h 5m
2026-07-16 PSLSS - Jul 16, 19:05 UTCJul 16, 20:39 UTC1h 35m
2026-07-16 PSLSS - Jul 16, 16:00 UTCJul 16, 16:44 UTC45m
2026-07-16 PSLSS - Jul 16, 12:30 UTCJul 16, 12:49 UTC20m
2026-07-16 PSLSS - Jul 16, 11:34 UTCJul 16, 11:54 UTC20m
2026-07-10 PSLSS - Jul 10, 15:20 UTCJul 10, 19:25 UTC4h 5m
2026-07-09 PSLSS - Jul 9, 16:45 UTCJul 10, 12:30 UTC19h 45m
2026-07-09 PSLSS - Jul 9, 12:35 UTCJul 10, 12:30 UTC23h 55m
2026-07-09 PSLSS - Jul 9, 11:45 UTCJul 9, 17:55 UTC6h 10m
2026-07-06 PSLSS - Jul 6, 19:40 UTCJul 6, 19:50 UTC10m
2026-07-06 PSLSS - Jul 6, 15:35 UTCJul 6, 19:00 UTC3h 25m
2026-07-06 PSLSS - Jul 6, 10:55 UTCJul 6, 14:30 UTC3h 35m
2026-07-05 PSLSS - Jul 5, 13:00 UTCJul 5, 14:10 UTC1h 10m
2026-07-05 PSLSS - Jul 5, 11:10 UTCJul 5, 12:00 UTC50m
2026-07-03 PSLSS - Jul 3, 16:05 UTCJul 3, 16:30 UTC25m
2026-07-03 PSLSS - Jul 3, 15:05 UTCJul 3, 15:30 UTC25m
2026-07-02 PSLSS - Jul 2, 20:25 UTCJul 2, 20:40 UTC15m
2026-06-30 PSLSS - Jun 30, 20:15 UTCJun 30, 20:35 UTC20m
2026-06-30 PSLSS - Jun 30, 15:25 UTCJun 30, 19:15 UTC3h 50m
2026-06-30 PSLSS - Jun 30, 11:55 UTCJun 30, 14:05 UTC2h 10m
2026-06-29 PSLSS - Jun 29, 15:34 UTCJun 30, 14:05 UTC22h 30m
2026-06-29 PSLSS - Jun 29, 10:50 UTCJun 29, 11:55 UTC1h 5m
2026-06-26 PSLSS - Jun 26, 12:50 UTCJun 26, 12:59 UTC10m
2026-06-17 PSLSS - Jun 17, 19:45 UTCJun 17, 20:00 UTC15m
2026-06-17 PSLSS - Jun 17, 15:15 UTCJun 17, 18:56 UTC3h 40m
2026-06-17 PSLSS - Jun 17, 11:15 UTCJun 17, 12:25 UTC1h 10m
2026-06-16 PSLSS - Jun 16, 11:00 UTCJun 16, 16:55 UTC5h 55m
2026-06-11 PSLSS - Jun 11, 19:55 UTCJun 11, 20:05 UTC10m
2026-06-11 PSLSS - Jun 11, 15:25 UTCJun 11, 18:55 UTC3h 30m
2026-06-11 PSLSS - Jun 11, 12:00 UTCJun 11, 12:35 UTC35m
2026-06-10 PSLSS - Jun 10, 11:05 UTCJun 10, 17:30 UTC6h 25m
2026-06-09 PSLSS - Jun 9, 22:50 UTCJun 9, 23:00 UTC10m
2026-06-09 PSLSS - Jun 9, 20:00 UTCJun 9, 21:30 UTC1h 30m
2026-06-08 PSLSS - Jun 8, 11:30 UTCJun 8, 12:40 UTC1h 10m
2026-06-07 PSLSS - Jun 7, 20:15 UTCJun 7, 20:50 UTC35m
2026-06-07 PSLSS - Jun 7, 18:40 UTCJun 7, 19:00 UTC20m
2026-06-07 PSLSS - Jun 7, 17:05 UTCJun 7, 17:40 UTC35m
2026-06-06 PSLSS - Jun 6, 23:44 UTCJun 7, 03:30 UTC3h 45m
2026-06-06 PSLSS - Jun 6, 11:39 UTCJun 6, 12:30 UTC50m
2026-06-06 PSLSS - Jun 6, 06:00 UTCJun 6, 06:45 UTC45m
2026-06-03 PSLSS - Jun 3, 22:20 UTCJun 3, 22:35 UTC15m
2026-06-01 PSLSS - Jun 1, 15:40 UTCJun 1, 16:40 UTC1h 0m
2026-06-01 PSLSS - Jun 1, 00:25 UTCJun 1, 00:35 UTC10m
2026-05-31 PSLSS - May 31, 12:55 UTCMay 31, 13:10 UTC15m
2026-05-28 PSLSS - May 28, 14:25 UTCMay 28, 15:25 UTC1h 0m
2026-05-27 PSLSS - May 27, 11:05 UTCMay 27, 11:55 UTC50m
2026-05-26 PSLSS - May 26, 20:45 UTCMay 26, 21:44 UTC1h 0m
2026-05-26 PSLSS - May 26, 14:24 UTCMay 26, 15:24 UTC1h 0m
2026-05-26 PSLSS - May 26, 13:19 UTCMay 26, 13:29 UTC10m
2026-05-25 PSLSS - May 25, 11:15 UTCMay 25, 20:55 UTC9h 40m

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-LSS page for operator, model, and routing details .

Mode-S E4991A frequently asked

What is Mode-S code E4991A?
E4991A is an ICAO 24-bit transponder address. Allocated to Brazil. Assigned to PS-LSS.
Where is Mode-S E4991A registered?
Mode-S code E4991A is allocated to Brazil (BR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is E4991A broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 14:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex E4991A, octal 71114432, decimal 14,981,402.
What flights does E4991A operate?
Mode-S E4991A has broadcast 1 distinct callsign, including PSLSS.