Apparatus

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sensors Mode-S transponder

A2E5B4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N286QS · EMBRAER EMB545 Praetor 500 · operated by NETJETS SALES INC

Hex
A2E5B4
Octal
50562664
Decimal
10,675,636
Country
US
Tail
N286QS
Type
E545
No current signal · last broadcast 1d ago
Flights observed
8
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A2E5B4.

Country allocation

The ICAO 24-bit address A2E5B4 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
EJA286 NetJets 8 2026-04-13

Recent flights last 8

DateFlightRouteTakeoffLandingDuration
2026-04-13 EJA286 DAL → HOU Apr 13, 21:40 UTCApr 13, 22:05 UTC25m
2026-04-13 EJA286 DAL → HOU Apr 13, 19:50 UTCApr 13, 20:35 UTC45m
2026-04-13 EJA286 DAL → HOU Apr 13, 19:05 UTCApr 13, 20:00 UTC55m
2026-04-13 EJA286 DAL → HOU Apr 13, 16:15 UTCApr 13, 18:10 UTC1h 55m
2026-04-13 EJA286 DAL → HOU Apr 13, 00:20 UTCApr 13, 01:05 UTC45m
2026-04-12 EJA286 DAL → HOU Apr 12, 23:55 UTCApr 13, 01:05 UTC1h 10m
2026-04-12 EJA286 DAL → HOU Apr 12, 19:00 UTCApr 12, 19:50 UTC50m
2026-04-12 EJA286 DAL → HOU Apr 12, 17:15 UTCApr 12, 17:50 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 N286QS page for operator, model, and routing details .

Mode-S A2E5B4 frequently asked

What is Mode-S code A2E5B4?
A2E5B4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N286QS.
Where is Mode-S A2E5B4 registered?
Mode-S code A2E5B4 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 A2E5B4 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 A2E5B4, octal 50562664, decimal 10,675,636.
What flights does A2E5B4 operate?
Mode-S A2E5B4 has broadcast 1 distinct callsign, including EJA286.