Apparatus

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sensors Mode-S transponder

A3A9FB

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N335SJ · LEARJET 60 · operated by SCMV LLC

Hex
A3A9FB
Octal
50724773
Decimal
10,725,883
Country
US
Tail
N335SJ
Type
LJ60
No current signal · last broadcast 1d ago
Flights observed
137
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A3A9FB.

Country allocation

The ICAO 24-bit address A3A9FB 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
UWD35 - 137 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 UWD35 - Jul 18, 14:20 UTCJul 18, 15:55 UTC1h 35m
2026-07-18 UWD35 - Jul 18, 12:15 UTCJul 18, 13:35 UTC1h 20m
2026-07-17 UWD35 - Jul 17, 17:20 UTCJul 17, 18:00 UTC40m
2026-07-17 UWD35 - Jul 17, 14:35 UTCJul 17, 16:44 UTC2h 10m
2026-07-16 UWD35 - Jul 16, 12:30 UTCJul 16, 14:35 UTC2h 5m
2026-07-16 UWD35 - Jul 16, 10:45 UTCJul 16, 11:54 UTC1h 10m
2026-07-16 UWD35 - Jul 16, 07:55 UTCJul 16, 09:00 UTC1h 5m
2026-07-15 UWD35 PDK → WSG Jul 15, 15:55 UTCJul 15, 17:05 UTC1h 10m
2026-07-15 UWD35 - Jul 15, 14:05 UTCJul 15, 14:30 UTC25m
2026-07-12 UWD35 - Jul 12, 14:10 UTCJul 12, 14:45 UTC35m
2026-07-11 UWD35 - Jul 11, 19:50 UTCJul 11, 20:05 UTC15m
2026-07-11 UWD35 - Jul 11, 17:35 UTCJul 11, 18:55 UTC1h 20m
2026-07-11 UWD35 - Jul 11, 15:05 UTCJul 11, 16:50 UTC1h 45m
2026-07-11 UWD35 - Jul 11, 12:30 UTCJul 11, 14:10 UTC1h 40m
2026-07-08 UWD35 - Jul 8, 21:15 UTCJul 8, 21:50 UTC35m
2026-07-08 UWD35 - Jul 8, 15:20 UTCJul 8, 16:00 UTC40m
2026-07-08 UWD35 LUK → WSG Jul 8, 06:15 UTCJul 8, 07:30 UTC1h 15m
2026-07-08 UWD35 - Jul 8, 04:20 UTCJul 8, 04:55 UTC35m
2026-07-05 UWD35 BOS → WSG Jul 5, 13:50 UTCJul 5, 15:05 UTC1h 15m
2026-07-04 UWD35 - Jul 4, 22:00 UTCJul 4, 22:30 UTC30m
2026-07-04 UWD35 - Jul 4, 21:15 UTCJul 4, 21:55 UTC40m
2026-07-02 UWD35 - Jul 2, 19:15 UTCJul 2, 21:25 UTC2h 10m
2026-07-02 UWD35 - Jul 2, 16:05 UTCJul 2, 18:15 UTC2h 10m
2026-07-02 UWD35 - Jul 2, 14:00 UTCJul 2, 15:25 UTC1h 25m
2026-07-02 UWD35 - Jul 2, 12:20 UTCJul 2, 13:20 UTC1h 0m
2026-07-01 UWD35 - Jul 1, 14:35 UTCJul 1, 15:40 UTC1h 5m
2026-06-29 UWD35 - Jun 29, 14:09 UTCJun 29, 15:24 UTC1h 15m
2026-06-28 UWD35 - Jun 28, 15:09 UTCJun 28, 16:19 UTC1h 10m
2026-06-27 UWD35 - Jun 27, 19:00 UTCJun 27, 21:10 UTC2h 10m
2026-06-27 UWD35 - Jun 27, 16:44 UTCJun 27, 18:15 UTC1h 30m
2026-06-27 UWD35 - Jun 27, 14:14 UTCJun 27, 14:49 UTC35m
2026-06-25 UWD35 - Jun 25, 16:20 UTCJun 25, 17:09 UTC50m
2026-06-25 UWD35 - Jun 25, 13:14 UTCJun 25, 14:20 UTC1h 5m
2026-06-24 UWD35 - Jun 24, 03:29 UTCJun 24, 04:00 UTC30m
2026-06-24 UWD35 AGC → IAD Jun 24, 02:24 UTCJun 24, 03:00 UTC35m
2026-06-23 UWD35 - Jun 23, 21:45 UTCJun 23, 21:54 UTC10m
2026-06-21 UWD35 - Jun 21, 22:04 UTCJun 21, 22:54 UTC50m
2026-06-21 UWD35 - Jun 21, 19:55 UTCJun 21, 20:54 UTC1h 0m
2026-06-17 UWD35 - Jun 17, 03:30 UTCJun 17, 04:25 UTC55m
2026-06-16 UWD35 - Jun 16, 17:59 UTCJun 16, 18:25 UTC25m
2026-06-16 UWD35 WSG → AGC Jun 16, 17:10 UTCJun 16, 17:24 UTC15m
2026-06-15 UWD35 MGW → WSG Jun 15, 15:45 UTCJun 15, 15:55 UTC10m
2026-06-15 UWD35 - Jun 15, 14:50 UTCJun 15, 15:25 UTC35m
2026-06-15 UWD35 - Jun 15, 10:50 UTCJun 15, 11:24 UTC35m
2026-06-15 UWD35 - Jun 15, 10:05 UTCJun 15, 10:20 UTC15m
2026-06-13 UWD35 - Jun 13, 22:05 UTCJun 13, 23:00 UTC55m
2026-06-13 UWD35 BED → TEB Jun 13, 20:45 UTCJun 13, 21:25 UTC40m
2026-06-13 UWD35 - Jun 13, 17:30 UTCJun 13, 20:00 UTC2h 30m
2026-06-13 UWD35 VNY → LNK Jun 13, 14:20 UTCJun 13, 16:50 UTC2h 30m
2026-06-11 UWD35 - Jun 11, 15:55 UTCJun 11, 18:40 UTC2h 45m

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 N335SJ page for operator, model, and routing details .

Mode-S A3A9FB frequently asked

What is Mode-S code A3A9FB?
A3A9FB is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N335SJ.
Where is Mode-S A3A9FB registered?
Mode-S code A3A9FB 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 A3A9FB broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3A9FB, octal 50724773, decimal 10,725,883.
What flights does A3A9FB operate?
Mode-S A3A9FB has broadcast 1 distinct callsign, including UWD35.