Apparatus

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sensors Mode-S transponder

AA759B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N773QS · BOMBARDIER BD-100 Challenger 350 · operated by NETJETS SALES INC

Hex
AA759B
Octal
52472633
Decimal
11,171,227
Country
US
Tail
N773QS
Type
CL35
Broadcasting now · callsign EJA773 · 43,000 ft
Flights observed
8
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Current position

AA759B is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AA759B 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
EJA773 NetJets 8 2026-04-13

Recent flights last 8

DateFlightRouteTakeoffLandingDuration
2026-04-13 EJA773 COE → JAC Apr 13, 22:20 UTCApr 13, 22:50 UTC30m
2026-04-13 EJA773 COE → JAC Apr 13, 19:50 UTCApr 13, 20:50 UTC1h 0m
2026-04-13 EJA773 COE → JAC Apr 13, 18:30 UTCApr 13, 20:10 UTC1h 40m
2026-04-13 EJA773 COE → JAC Apr 13, 17:05 UTCApr 13, 17:30 UTC25m
2026-04-13 EJA773 COE → JAC Apr 13, 15:50 UTCApr 13, 16:20 UTC30m
2026-04-13 EJA773 COE → JAC Apr 13, 14:05 UTCApr 13, 16:15 UTC2h 10m
2026-04-13 EJA773 COE → JAC Apr 13, 00:20 UTCApr 13, 01:25 UTC1h 5m
2026-04-12 EJA773 COE → JAC Apr 12, 23:55 UTCApr 13, 01:25 UTC1h 30m

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 N773QS page for operator, model, and routing details .

Mode-S AA759B frequently asked

What is Mode-S code AA759B?
AA759B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N773QS.
Where is Mode-S AA759B registered?
Mode-S code AA759B 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 AA759B broadcasting right now?
Yes. Mode-S AA759B is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA759B, octal 52472633, decimal 11,171,227.
What flights does AA759B operate?
Mode-S AA759B has broadcast 1 distinct callsign, including EJA773.