Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A1A9BC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N206QS · BOMBARDIER CL-600 Challenger · operated by NETJETS SALES INC, BANK OF AMERICA, B-JET LLC, EAST AVIATION MANAGEMENT TWO LLC, D1 CAPITAL EQUIPMENT LLC, NJAH LLC

Hex
A1A9BC
Octal
50324674
Decimal
10,594,748
Country
US
Tail
N206QS
Type
CL60
No current signal · last broadcast 2d ago
Flights observed
82
Distinct callsigns
2
Country
US
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S A1A9BC.

Country allocation

The ICAO 24-bit address A1A9BC 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 2 distinct

Callsign Airline Flights Last seen
EJA206 NetJets 53 2026-05-31
N206QS - 29 2026-05-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-31 EJA206 SFO → LAS May 31, 17:50 UTCMay 31, 20:05 UTC2h 15m
2026-05-29 EJA206 SFO → LAS May 29, 21:45 UTCMay 29, 23:10 UTC1h 25m
2026-05-29 EJA206 SFO → LAS May 29, 16:55 UTCMay 29, 19:10 UTC2h 15m
2026-05-28 EJA206 SFO → LAS May 28, 20:40 UTCMay 28, 21:10 UTC30m
2026-05-28 EJA206 SFO → LAS May 28, 19:00 UTCMay 28, 19:30 UTC30m
2026-05-28 EJA206 SFO → LAS May 28, 17:25 UTCMay 28, 18:10 UTC45m
2026-05-28 EJA206 SFO → LAS May 28, 15:05 UTCMay 28, 15:35 UTC30m
2026-05-28 EJA206 SFO → LAS May 28, 13:40 UTCMay 28, 14:15 UTC35m
2026-05-24 EJA206 SFO → LAS May 24, 16:40 UTCMay 24, 18:45 UTC2h 5m
2026-05-24 EJA206 SFO → LAS May 24, 12:15 UTCMay 24, 14:10 UTC1h 55m
2026-05-23 EJA206 SFO → LAS May 23, 16:25 UTCMay 23, 18:05 UTC1h 40m
2026-05-23 EJA206 SFO → LAS May 23, 14:50 UTCMay 23, 15:40 UTC50m
2026-05-22 EJA206 SFO → LAS May 22, 16:10 UTCMay 22, 18:00 UTC1h 50m
2026-05-21 EJA206 SFO → LAS May 21, 19:45 UTCMay 21, 22:30 UTC2h 45m
2026-05-21 EJA206 SFO → LAS May 21, 14:10 UTCMay 21, 18:45 UTC4h 35m
2026-05-20 EJA206 SFO → LAS May 20, 22:15 UTCMay 20, 23:45 UTC1h 30m
2026-05-20 EJA206 SFO → LAS May 20, 15:20 UTCMay 20, 21:15 UTC5h 55m
2026-05-19 EJA206 SFO → LAS May 19, 23:25 UTCMay 20, 04:40 UTC5h 16m
2026-05-17 EJA206 SFO → LAS May 17, 22:15 UTCMay 17, 23:20 UTC1h 5m
2026-05-17 N206QS - May 17, 17:50 UTCMay 17, 20:15 UTC2h 25m
2026-05-16 N206QS - May 16, 18:45 UTCMay 16, 19:05 UTC20m
2026-05-16 N206QS - May 16, 17:05 UTCMay 16, 17:25 UTC20m
2026-05-16 N206QS - May 16, 15:10 UTCMay 16, 15:35 UTC25m
2026-05-14 EJA206 SFO → LAS May 14, 22:05 UTCMay 15, 00:25 UTC2h 20m
2026-05-14 EJA206 SFO → LAS May 14, 19:45 UTCMay 14, 20:45 UTC1h 0m
2026-05-14 EJA206 SFO → LAS May 14, 16:35 UTCMay 14, 19:10 UTC2h 35m
2026-05-13 EJA206 SFO → LAS May 13, 17:20 UTCMay 13, 17:50 UTC30m
2026-05-13 N206QS - May 13, 16:15 UTCMay 13, 16:55 UTC40m
2026-05-12 N206QS - May 12, 19:05 UTCMay 13, 16:55 UTC21h 50m
2026-05-12 EJA206 SFO → LAS May 12, 13:20 UTCMay 12, 18:05 UTC4h 45m
2026-05-12 EJA206 SFO → LAS May 12, 12:00 UTCMay 12, 12:20 UTC20m
2026-05-11 EJA206 SFO → LAS May 11, 20:10 UTCMay 11, 20:50 UTC40m
2026-05-11 EJA206 SFO → LAS May 11, 16:35 UTCMay 11, 18:55 UTC2h 21m
2026-05-04 N206QS - May 4, 15:10 UTCMay 4, 21:15 UTC6h 6m
2026-05-04 N206QS - May 4, 12:15 UTCMay 4, 12:40 UTC25m
2026-05-03 N206QS - May 3, 17:20 UTCMay 3, 21:20 UTC4h 0m
2026-05-03 EJA206 SFO → LAS May 3, 01:00 UTCMay 3, 01:25 UTC25m
2026-05-01 EJA206 SFO → LAS May 1, 20:00 UTCMay 1, 20:30 UTC30m
2026-05-01 EJA206 SFO → LAS May 1, 19:10 UTCMay 1, 19:20 UTC10m
2026-05-01 EJA206 SFO → LAS May 1, 03:20 UTCMay 1, 04:05 UTC45m
2026-04-30 EJA206 SFO → LAS Apr 30, 22:20 UTCMay 1, 00:15 UTC1h 55m
2026-04-30 EJA206 SFO → LAS Apr 30, 00:00 UTCApr 30, 06:15 UTC6h 15m
2026-04-29 EJA206 SFO → LAS Apr 29, 22:15 UTCApr 29, 22:25 UTC10m
2026-04-29 EJA206 SFO → LAS Apr 29, 02:50 UTCApr 29, 05:40 UTC2h 50m
2026-04-28 EJA206 SFO → LAS Apr 28, 21:30 UTCApr 28, 22:15 UTC45m
2026-04-27 EJA206 SFO → LAS Apr 27, 00:50 UTCApr 27, 05:05 UTC4h 15m
2026-04-26 EJA206 SFO → LAS Apr 26, 22:55 UTCApr 26, 23:40 UTC45m
2026-04-26 EJA206 SFO → LAS Apr 26, 20:30 UTCApr 26, 21:20 UTC50m
2026-04-26 EJA206 SFO → LAS Apr 26, 18:40 UTCApr 26, 19:20 UTC40m
2026-04-24 EJA206 SFO → LAS Apr 24, 18:35 UTCApr 25, 00:55 UTC6h 20m

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 N206QS page for operator, model, and routing details .

Mode-S A1A9BC frequently asked

What is Mode-S code A1A9BC?
A1A9BC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N206QS.
Where is Mode-S A1A9BC registered?
Mode-S code A1A9BC 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 A1A9BC broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1A9BC, octal 50324674, decimal 10,594,748.
What flights does A1A9BC operate?
Mode-S A1A9BC has broadcast 2 distinct callsigns, including EJA206, N206QS.