sensors Mode-S transponder

A2DE46

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N284QS · EMBRAER EMB-550 Praetor 600 · operated by NETJETS SALES INC

Hex
A2DE46
Octal
50557106
Decimal
10,673,734
Country
US
Tail
N284QS
Type
E550
No current signal · last broadcast 1d ago
Flights observed
5
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A2DE46.

Country allocation

The ICAO 24-bit address A2DE46 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
EJA284 NetJets 5 2026-04-13

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-13 EJA284 DAL → PWA Apr 13, 19:50 UTCApr 13, 22:05 UTC2h 15m
2026-04-13 EJA284 DAL → PWA Apr 13, 16:55 UTCApr 13, 19:55 UTC3h 0m
2026-04-13 EJA284 DAL → PWA Apr 13, 13:25 UTCApr 13, 15:00 UTC1h 35m
2026-04-12 EJA284 DAL → PWA Apr 12, 23:55 UTCApr 13, 00:10 UTC15m
2026-04-12 EJA284 DAL → PWA Apr 12, 18:10 UTCApr 12, 20:15 UTC2h 5m

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 N284QS page for operator, model, and routing details .

Mode-S A2DE46 frequently asked

What is Mode-S code A2DE46?
A2DE46 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N284QS.
Where is Mode-S A2DE46 registered?
Mode-S code A2DE46 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 A2DE46 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 A2DE46, octal 50557106, decimal 10,673,734.
What flights does A2DE46 operate?
Mode-S A2DE46 has broadcast 1 distinct callsign, including EJA284.