Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A9085D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N681QS · CESSNA 680 Citation Latitude · operated by NETJETS SALES INC, BABY RUTH LLC, BRIAR VIEW AVIATION LLC, HANCOCK WHITNEY CORP, HOLDEN AIR LLC, LAMZ AERO LLC

Hex
A9085D
Octal
52204135
Decimal
11,077,725
Country
US
Tail
N681QS
Type
C68A
No current signal · last broadcast 14d ago
Flights observed
74
Distinct callsigns
2
Country
US
Last broadcast
14d ago

Last known position

Most recent position reported by Mode-S A9085D.

Country allocation

The ICAO 24-bit address A9085D 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
EJA681 NetJets 60 2026-05-15
N681QS - 14 2026-05-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-15 EJA681 ERI → LBE May 15, 20:00 UTCMay 15, 21:30 UTC1h 30m
2026-05-15 EJA681 ERI → LBE May 15, 18:20 UTCMay 15, 19:05 UTC45m
2026-05-15 EJA681 ERI → LBE May 15, 16:10 UTCMay 15, 16:50 UTC40m
2026-05-15 EJA681 ERI → LBE May 15, 13:20 UTCMay 15, 14:00 UTC40m
2026-05-15 EJA681 ERI → LBE May 15, 12:15 UTCMay 15, 12:40 UTC25m
2026-05-14 EJA681 ERI → LBE May 14, 16:00 UTCMay 14, 18:05 UTC2h 5m
2026-05-14 EJA681 ERI → LBE May 14, 14:30 UTCMay 14, 15:30 UTC1h 0m
2026-05-13 EJA681 ERI → LBE May 13, 23:20 UTCMay 14, 01:40 UTC2h 20m
2026-05-13 EJA681 ERI → LBE May 13, 20:10 UTCMay 13, 21:35 UTC1h 25m
2026-05-13 EJA681 ERI → LBE May 13, 18:00 UTCMay 13, 18:50 UTC50m
2026-05-13 EJA681 ERI → LBE May 13, 16:10 UTCMay 13, 17:10 UTC1h 0m
2026-05-13 EJA681 ERI → LBE May 13, 01:10 UTCMay 13, 02:20 UTC1h 10m
2026-05-13 EJA681 ERI → LBE May 13, 00:05 UTCMay 13, 00:30 UTC25m
2026-05-12 EJA681 ERI → LBE May 12, 22:35 UTCMay 12, 22:55 UTC20m
2026-05-12 EJA681 ERI → LBE May 12, 17:05 UTCMay 12, 21:25 UTC4h 20m
2026-05-12 EJA681 ERI → LBE May 12, 14:00 UTCMay 12, 14:55 UTC55m
2026-05-12 EJA681 ERI → LBE May 12, 12:10 UTCMay 12, 13:10 UTC1h 0m
2026-05-11 EJA681 ERI → LBE May 11, 20:15 UTCMay 11, 21:35 UTC1h 20m
2026-05-11 EJA681 ERI → LBE May 11, 14:55 UTCMay 11, 19:20 UTC4h 26m
2026-05-11 EJA681 ERI → LBE May 11, 12:55 UTCMay 11, 13:20 UTC25m
2026-05-10 EJA681 ERI → LBE May 10, 20:09 UTCMay 10, 22:09 UTC2h 0m
2026-05-10 N681QS - May 10, 17:59 UTCMay 10, 18:29 UTC30m
2026-05-10 N681QS - May 10, 13:25 UTCMay 10, 16:10 UTC2h 45m
2026-05-10 EJA681 ERI → LBE May 10, 11:35 UTCMay 10, 11:55 UTC20m
2026-05-09 EJA681 ERI → LBE May 9, 18:20 UTCMay 9, 18:35 UTC15m
2026-05-09 EJA681 ERI → LBE May 9, 15:05 UTCMay 9, 16:50 UTC1h 45m
2026-05-08 EJA681 ERI → LBE May 8, 21:45 UTCMay 8, 22:55 UTC1h 10m
2026-05-08 EJA681 ERI → LBE May 8, 19:55 UTCMay 8, 21:05 UTC1h 10m
2026-05-08 EJA681 ERI → LBE May 8, 17:05 UTCMay 8, 17:50 UTC45m
2026-05-08 EJA681 ERI → LBE May 8, 14:30 UTCMay 8, 16:05 UTC1h 35m
2026-05-07 EJA681 ERI → LBE May 7, 20:15 UTCMay 7, 21:05 UTC50m
2026-05-07 N681QS - May 7, 17:40 UTCMay 7, 18:05 UTC25m
2026-05-07 N681QS - May 7, 12:15 UTCMay 7, 12:45 UTC30m
2026-05-06 EJA681 ERI → LBE May 6, 22:15 UTCMay 7, 00:40 UTC2h 25m
2026-05-06 EJA681 ERI → LBE May 6, 20:10 UTCMay 6, 21:00 UTC50m
2026-05-06 EJA681 ERI → LBE May 6, 17:30 UTCMay 6, 18:20 UTC49m
2026-05-06 EJA681 ERI → LBE May 6, 16:05 UTCMay 6, 16:25 UTC20m
2026-05-06 EJA681 ERI → LBE May 6, 00:01 UTCMay 6, 01:45 UTC1h 45m
2026-05-05 EJA681 ERI → LBE May 5, 21:25 UTCMay 5, 22:10 UTC45m
2026-04-30 EJA681 ERI → LBE Apr 30, 14:55 UTCApr 30, 17:00 UTC2h 5m
2026-04-30 EJA681 ERI → LBE Apr 30, 12:50 UTCApr 30, 13:35 UTC45m
2026-04-29 EJA681 ERI → LBE Apr 29, 22:15 UTCApr 30, 00:25 UTC2h 9m
2026-04-29 EJA681 ERI → LBE Apr 29, 20:25 UTCApr 29, 20:55 UTC30m
2026-04-29 EJA681 ERI → LBE Apr 29, 17:55 UTCApr 29, 19:30 UTC1h 35m
2026-04-29 EJA681 ERI → LBE Apr 29, 14:20 UTCApr 29, 15:30 UTC1h 10m
2026-04-27 EJA681 ERI → LBE Apr 27, 18:55 UTCApr 27, 19:50 UTC55m
2026-04-27 EJA681 ERI → LBE Apr 27, 17:05 UTCApr 27, 17:55 UTC50m
2026-04-27 EJA681 ERI → LBE Apr 27, 15:25 UTCApr 27, 16:00 UTC35m
2026-04-27 EJA681 ERI → LBE Apr 27, 11:25 UTCApr 27, 13:20 UTC1h 55m
2026-04-26 N681QS - Apr 26, 15:10 UTCApr 26, 17:30 UTC2h 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 N681QS page for operator, model, and routing details .

Mode-S A9085D frequently asked

What is Mode-S code A9085D?
A9085D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N681QS.
Where is Mode-S A9085D registered?
Mode-S code A9085D 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 A9085D broadcasting right now?
No active broadcast right now. Last signal was 14d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A9085D, octal 52204135, decimal 11,077,725.
What flights does A9085D operate?
Mode-S A9085D has broadcast 2 distinct callsigns, including EJA681, N681QS.