Apparatus

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sensors Mode-S transponder

A320C1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N300QS · EMBRAER EMB-505 Phenom 300 · operated by NETJETS SALES INC, NETJETS AVIATION INC

Hex
A320C1
Octal
50620301
Decimal
10,690,753
Country
US
Tail
N300QS
Type
E55P
No current signal · last broadcast 4h ago
Flights observed
22
Distinct callsigns
1
Country
US
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S A320C1.

Country allocation

The ICAO 24-bit address A320C1 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
EJA300 NetJets 22 2026-04-18

Recent flights last 22

DateFlightRouteTakeoffLandingDuration
2026-04-18 EJA300 PBI → BTR Apr 18, 19:15 UTCApr 18, 20:30 UTC1h 15m
2026-04-17 EJA300 PBI → BTR Apr 17, 21:25 UTCApr 17, 21:35 UTC10m
2026-04-17 EJA300 PBI → BTR Apr 17, 21:05 UTCApr 17, 21:20 UTC15m
2026-04-17 EJA300 PBI → BTR Apr 17, 19:25 UTCApr 17, 19:55 UTC30m
2026-04-17 EJA300 PBI → BTR Apr 17, 18:30 UTCApr 17, 19:20 UTC50m
2026-04-17 EJA300 PBI → BTR Apr 17, 15:45 UTCApr 17, 17:15 UTC1h 30m
2026-04-16 EJA300 PBI → BTR Apr 16, 23:20 UTCApr 16, 23:55 UTC35m
2026-04-16 EJA300 PBI → BTR Apr 16, 22:40 UTCApr 16, 23:10 UTC30m
2026-04-16 EJA300 PBI → BTR Apr 16, 18:25 UTCApr 16, 18:55 UTC30m
2026-04-16 EJA300 PBI → BTR Apr 16, 17:15 UTCApr 16, 17:25 UTC10m
2026-04-16 EJA300 PBI → BTR Apr 16, 16:40 UTCApr 16, 17:10 UTC30m
2026-04-16 EJA300 PBI → BTR Apr 16, 01:10 UTCApr 16, 02:00 UTC50m
2026-04-15 EJA300 PBI → BTR Apr 15, 21:35 UTCApr 15, 22:20 UTC45m
2026-04-15 EJA300 PBI → BTR Apr 15, 19:45 UTCApr 15, 20:45 UTC1h 0m
2026-04-15 EJA300 PBI → BTR Apr 15, 17:15 UTCApr 15, 18:00 UTC45m
2026-04-15 EJA300 PBI → BTR Apr 15, 15:15 UTCApr 15, 16:10 UTC55m
2026-04-15 EJA300 PBI → BTR Apr 15, 00:10 UTCApr 15, 00:50 UTC40m
2026-04-14 EJA300 PBI → BTR Apr 14, 22:55 UTCApr 14, 23:00 UTC5m
2026-04-14 EJA300 PBI → BTR Apr 14, 22:20 UTCApr 14, 22:50 UTC30m
2026-04-12 EJA300 - Apr 12, 23:55 UTCApr 13, 00:15 UTC20m
2026-04-12 EJA300 - Apr 12, 19:25 UTCApr 12, 20:10 UTC45m
2026-04-12 EJA300 - 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 N300QS page for operator, model, and routing details .

Mode-S A320C1 frequently asked

What is Mode-S code A320C1?
A320C1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N300QS.
Where is Mode-S A320C1 registered?
Mode-S code A320C1 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 A320C1 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A320C1, octal 50620301, decimal 10,690,753.
What flights does A320C1 operate?
Mode-S A320C1 has broadcast 1 distinct callsign, including EJA300.