Apparatus

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sensors Mode-S transponder

A3E4E0

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N350AU · operated by CHRISTIANSEN AVIATION LLC

Hex
A3E4E0
Octal
50762340
Decimal
10,740,960
Country
US
Tail
N350AU
Type
PA44
Transponder active on ground
Flights observed
39
Distinct callsigns
1
Country
US
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S A3E4E0.

Country allocation

The ICAO 24-bit address A3E4E0 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
AUB1350 - 39 2026-04-18

Recent flights last 39

DateFlightRouteTakeoffLandingDuration
2026-04-18 AUB1350 AUO → AUO Apr 18, 14:35 UTCApr 18, 15:50 UTC1h 15m
2026-04-18 AUB1350 AUO → AUO Apr 18, 12:30 UTCApr 18, 12:35 UTC5m
2026-04-18 AUB1350 - Apr 18, 12:15 UTCApr 18, 12:25 UTC10m
2026-04-18 AUB1350 - Apr 18, 12:00 UTCApr 18, 12:05 UTC5m
2026-04-18 AUB1350 AUO → AUO Apr 18, 11:45 UTCApr 18, 11:50 UTC5m
2026-04-18 AUB1350 - Apr 18, 02:35 UTCApr 18, 03:00 UTC25m
2026-04-18 AUB1350 - Apr 18, 01:50 UTCApr 18, 02:05 UTC15m
2026-04-17 AUB1350 - Apr 17, 21:25 UTCApr 17, 21:40 UTC15m
2026-04-17 AUB1350 - Apr 17, 20:40 UTCApr 17, 21:05 UTC25m
2026-04-17 AUB1350 AUO → AUO Apr 17, 17:45 UTCApr 17, 18:10 UTC25m
2026-04-17 AUB1350 - Apr 17, 15:20 UTCApr 17, 15:35 UTC15m
2026-04-17 AUB1350 - Apr 17, 13:50 UTCApr 17, 14:10 UTC20m
2026-04-17 AUB1350 AUO → AUO Apr 17, 12:00 UTCApr 17, 12:05 UTC5m
2026-04-17 AUB1350 AUO → AUO Apr 17, 11:35 UTCApr 17, 11:40 UTC5m
2026-04-16 AUB1350 AUO → AUO Apr 16, 19:30 UTCApr 16, 20:05 UTC35m
2026-04-16 AUB1350 AUO → AUO Apr 16, 16:10 UTCApr 16, 17:00 UTC50m
2026-04-16 AUB1350 - Apr 16, 13:15 UTCApr 16, 14:05 UTC50m
2026-04-16 AUB1350 - Apr 16, 12:34 UTCApr 16, 13:05 UTC30m
2026-04-16 AUB1350 AUO → AUO Apr 16, 02:00 UTCApr 16, 02:04 UTC5m
2026-04-16 AUB1350 AUO → AUO Apr 16, 01:40 UTCApr 16, 01:50 UTC10m
2026-04-15 AUB1350 AUO → AUO Apr 15, 23:45 UTCApr 16, 00:00 UTC15m
2026-04-15 AUB1350 - Apr 15, 23:10 UTCApr 15, 23:35 UTC25m
2026-04-15 AUB1350 - Apr 15, 22:50 UTCApr 15, 23:00 UTC10m
2026-04-15 AUB1350 - Apr 15, 21:30 UTCApr 15, 21:45 UTC15m
2026-04-15 AUB1350 - Apr 15, 20:35 UTCApr 15, 20:55 UTC20m
2026-04-15 AUB1350 - Apr 15, 19:05 UTCApr 15, 19:45 UTC40m
2026-04-15 AUB1350 - Apr 15, 18:55 UTCApr 15, 19:00 UTC5m
2026-04-15 AUB1350 - Apr 15, 17:05 UTCApr 15, 17:35 UTC30m
2026-04-15 AUB1350 - Apr 15, 14:01 UTCApr 15, 14:40 UTC40m
2026-04-15 AUB1350 AUO → AUO Apr 15, 11:55 UTCApr 15, 12:55 UTC1h 0m
2026-04-14 AUB1350 AUO → AUO Apr 14, 22:00 UTCApr 14, 22:35 UTC35m
2026-04-14 AUB1350 AUO → AUO Apr 14, 17:45 UTCApr 14, 18:40 UTC55m
2026-04-14 AUB1350 AUO → AUO Apr 14, 16:10 UTCApr 14, 16:45 UTC35m
2026-04-14 AUB1350 LGC → AUO Apr 14, 12:50 UTCApr 14, 14:30 UTC1h 40m
2026-04-14 AUB1350 - Apr 14, 12:35 UTCApr 14, 12:45 UTC10m
2026-04-13 AUB1350 - Apr 13, 19:50 UTCApr 13, 20:40 UTC50m
2026-04-13 AUB1350 - Apr 13, 19:40 UTCApr 13, 19:45 UTC5m
2026-04-13 AUB1350 - Apr 13, 14:15 UTCApr 13, 14:30 UTC15m
2026-04-13 AUB1350 - Apr 13, 12:55 UTCApr 13, 13:15 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 N350AU page for operator, model, and routing details .

Mode-S A3E4E0 frequently asked

What is Mode-S code A3E4E0?
A3E4E0 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N350AU.
Where is Mode-S A3E4E0 registered?
Mode-S code A3E4E0 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 A3E4E0 broadcasting right now?
Mode-S A3E4E0 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3E4E0, octal 50762340, decimal 10,740,960.
What flights does A3E4E0 operate?
Mode-S A3E4E0 has broadcast 1 distinct callsign, including AUB1350.