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sensors Mode-S transponder

A35881

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N3143U · CESSNA 182 Skylane · operated by TIMUUU INC

Hex
A35881
Octal
50654201
Decimal
10,705,025
Country
US
Tail
N3143U
Type
C182
No current signal · last broadcast Jul 25, 00:35 UTC
Flights observed
130
Distinct callsigns
1
Country
US
Last broadcast
Jul 25, 00:35 UTC

Last known position

Most recent position reported by Mode-S A35881.

Country allocation

The ICAO 24-bit address A35881 falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States 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
N3143U - 130 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 N3143U - Jul 24, 22:15 UTCJul 25, 00:35 UTC2h 20m
2026-07-24 N3143U - Jul 24, 21:10 UTCJul 24, 21:40 UTC30m
2026-07-24 N3143U - Jul 24, 00:30 UTCJul 24, 00:50 UTC20m
2026-07-23 N3143U - Jul 23, 22:55 UTCJul 23, 23:25 UTC30m
2026-07-23 N3143U - Jul 23, 21:00 UTCJul 23, 22:15 UTC1h 15m
2026-07-23 N3143U - Jul 23, 18:25 UTCJul 23, 20:20 UTC1h 55m
2026-07-20 N3143U - Jul 20, 20:45 UTCJul 20, 21:15 UTC30m
2026-07-19 N3143U - Jul 19, 12:35 UTCJul 19, 13:05 UTC30m
2026-07-10 N3143U - Jul 10, 21:35 UTCJul 10, 23:20 UTC1h 45m
2026-07-10 N3143U - Jul 10, 20:20 UTCJul 10, 20:50 UTC30m
2026-07-10 N3143U - Jul 10, 19:30 UTCJul 10, 19:40 UTC10m
2026-07-10 N3143U - Jul 10, 18:35 UTCJul 10, 18:50 UTC15m
2026-07-09 N3143U - Jul 9, 20:20 UTCJul 9, 20:45 UTC25m
2026-07-09 N3143U - Jul 9, 16:55 UTCJul 9, 18:20 UTC1h 25m
2026-07-08 N3143U - Jul 8, 16:00 UTCJul 8, 16:25 UTC25m
2026-07-08 N3143U - Jul 8, 14:45 UTCJul 8, 14:55 UTC10m
2026-07-07 N3143U - Jul 7, 22:55 UTCJul 7, 23:15 UTC20m
2026-07-07 N3143U - Jul 7, 21:30 UTCJul 7, 22:00 UTC30m
2026-07-07 N3143U - Jul 7, 19:25 UTCJul 7, 20:20 UTC55m
2026-07-07 N3143U - Jul 7, 17:10 UTCJul 7, 18:50 UTC1h 40m
2026-07-06 N3143U - Jul 6, 16:00 UTCJul 6, 16:10 UTC10m
2026-07-06 N3143U - Jul 6, 15:10 UTCJul 6, 15:25 UTC15m
2026-07-05 N3143U - Jul 5, 14:55 UTCJul 5, 15:05 UTC10m
2026-07-04 N3143U - Jul 4, 18:50 UTCJul 4, 19:00 UTC10m
2026-07-04 N3143U - Jul 4, 17:45 UTCJul 4, 18:00 UTC15m
2026-07-03 N3143U - Jul 3, 20:25 UTCJul 3, 20:50 UTC25m
2026-07-02 N3143U - Jul 2, 22:55 UTCJul 2, 23:20 UTC25m
2026-07-01 N3143U - Jul 1, 16:50 UTCJul 1, 17:15 UTC25m
2026-06-29 N3143U - Jun 29, 22:10 UTCJun 29, 22:39 UTC30m
2026-06-29 N3143U - Jun 29, 20:44 UTCJun 29, 21:34 UTC50m
2026-06-29 N3143U - Jun 29, 19:20 UTCJun 29, 19:49 UTC30m
2026-06-29 N3143U - Jun 29, 18:14 UTCJun 29, 18:49 UTC35m
2026-06-29 N3143U - Jun 29, 16:29 UTCJun 29, 16:55 UTC25m
2026-06-29 N3143U - Jun 29, 15:00 UTCJun 29, 15:54 UTC55m
2026-06-26 N3143U - Jun 26, 21:45 UTCJun 27, 00:20 UTC2h 35m
2026-06-26 N3143U - Jun 26, 16:35 UTCJun 26, 17:50 UTC1h 15m
2026-06-26 N3143U - Jun 26, 13:55 UTCJun 26, 15:20 UTC1h 25m
2026-06-24 N3143U - Jun 24, 19:04 UTCJun 24, 22:19 UTC3h 15m
2026-06-24 N3143U - Jun 24, 14:15 UTCJun 24, 16:59 UTC2h 45m
2026-06-23 N3143U - Jun 23, 21:45 UTCJun 23, 22:15 UTC30m
2026-06-23 N3143U - Jun 23, 17:04 UTCJun 23, 18:39 UTC1h 35m
2026-06-23 N3143U - Jun 23, 16:05 UTCJun 23, 16:29 UTC25m
2026-06-23 N3143U - Jun 23, 14:35 UTCJun 23, 15:30 UTC55m
2026-06-20 N3143U - Jun 20, 22:50 UTCJun 20, 23:19 UTC30m
2026-06-20 N3143U - Jun 20, 21:40 UTCJun 20, 22:05 UTC25m
2026-06-17 N3143U - Jun 17, 22:00 UTCJun 17, 22:55 UTC55m
2026-06-17 N3143U - Jun 17, 18:35 UTCJun 17, 19:00 UTC25m
2026-06-17 N3143U - Jun 17, 17:00 UTCJun 17, 18:00 UTC1h 0m
2026-06-17 N3143U - Jun 17, 15:00 UTCJun 17, 15:55 UTC55m
2026-06-16 N3143U - Jun 16, 21:40 UTCJun 16, 22:15 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.

Prefer a tail-number view? See the N3143U page for operator, model, and routing details .

Mode-S A35881 frequently asked

What is Mode-S code A35881?
A35881 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N3143U.
Where is Mode-S A35881 registered?
Mode-S code A35881 is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is A35881 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 00:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A35881, octal 50654201, decimal 10,705,025.
What flights does A35881 operate?
Mode-S A35881 has broadcast 1 distinct callsign, including N3143U.