Apparatus

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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 Jul 26, 19:50 UTC
Flights observed
203
Distinct callsigns
2
Country
US
Last broadcast
Jul 26, 19:50 UTC

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 188 2026-07-26
N681QS - 15 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EJA681 ERI → LBE Jul 26, 16:50 UTCJul 26, 19:50 UTC3h 0m
2026-07-26 EJA681 ERI → LBE Jul 26, 15:00 UTCJul 26, 15:35 UTC35m
2026-07-26 EJA681 ERI → LBE Jul 26, 00:00 UTCJul 26, 01:10 UTC1h 10m
2026-07-25 EJA681 ERI → LBE Jul 25, 19:50 UTCJul 25, 20:35 UTC45m
2026-07-25 EJA681 ERI → LBE Jul 25, 17:50 UTCJul 25, 18:35 UTC45m
2026-07-25 EJA681 ERI → LBE Jul 25, 14:15 UTCJul 25, 16:20 UTC2h 5m
2026-07-24 EJA681 ERI → LBE Jul 24, 18:50 UTCJul 24, 20:55 UTC2h 5m
2026-07-24 EJA681 ERI → LBE Jul 24, 16:15 UTCJul 24, 17:35 UTC1h 20m
2026-07-24 EJA681 ERI → LBE Jul 24, 13:00 UTCJul 24, 14:25 UTC1h 25m
2026-07-24 EJA681 ERI → LBE Jul 24, 11:20 UTCJul 24, 11:55 UTC35m
2026-07-23 EJA681 ERI → LBE Jul 23, 20:50 UTCJul 23, 22:20 UTC1h 30m
2026-07-23 EJA681 ERI → LBE Jul 23, 16:15 UTCJul 23, 19:00 UTC2h 45m
2026-07-23 EJA681 ERI → LBE Jul 23, 12:50 UTCJul 23, 13:35 UTC45m
2026-07-23 EJA681 ERI → LBE Jul 23, 11:25 UTCJul 23, 11:50 UTC25m
2026-07-22 EJA681 ERI → LBE Jul 22, 21:45 UTCJul 22, 22:40 UTC55m
2026-07-22 EJA681 ERI → LBE Jul 22, 20:10 UTCJul 22, 20:55 UTC45m
2026-07-22 EJA681 ERI → LBE Jul 22, 16:50 UTCJul 22, 19:05 UTC2h 15m
2026-07-22 EJA681 ERI → LBE Jul 22, 13:35 UTCJul 22, 14:50 UTC1h 15m
2026-07-21 EJA681 ERI → LBE Jul 21, 20:50 UTCJul 21, 21:00 UTC10m
2026-07-21 EJA681 ERI → LBE Jul 21, 17:25 UTCJul 21, 19:00 UTC1h 35m
2026-07-21 EJA681 ERI → LBE Jul 21, 14:05 UTCJul 21, 15:25 UTC1h 20m
2026-07-20 EJA681 ERI → LBE Jul 20, 22:35 UTCJul 21, 00:00 UTC1h 24m
2026-07-20 EJA681 ERI → LBE Jul 20, 20:05 UTCJul 20, 20:55 UTC50m
2026-07-20 EJA681 ERI → LBE Jul 20, 15:40 UTCJul 20, 19:10 UTC3h 30m
2026-07-20 EJA681 ERI → LBE Jul 20, 13:15 UTCJul 20, 14:35 UTC1h 20m
2026-07-19 EJA681 ERI → LBE Jul 19, 20:45 UTCJul 19, 23:30 UTC2h 45m
2026-07-19 EJA681 ERI → LBE Jul 19, 18:35 UTCJul 19, 19:20 UTC45m
2026-07-19 EJA681 ERI → LBE Jul 19, 03:25 UTCJul 19, 17:35 UTC14h 10m
2026-07-18 N681QS - Jul 18, 22:25 UTCJul 19, 00:20 UTC1h 55m
2026-07-18 EJA681 - Jul 18, 19:25 UTCJul 18, 20:10 UTC45m
2026-07-18 EJA681 - Jul 18, 15:35 UTCJul 18, 18:10 UTC2h 35m
2026-07-17 EJA681 - Jul 17, 21:20 UTCJul 18, 18:10 UTC20h 51m
2026-07-17 EJA681 - Jul 17, 17:25 UTCJul 17, 20:20 UTC2h 55m
2026-07-17 EJA681 - Jul 17, 15:00 UTCJul 17, 16:10 UTC1h 10m
2026-07-16 EJA681 - Jul 16, 22:55 UTCJul 16, 23:40 UTC45m
2026-07-16 EJA681 - Jul 16, 16:44 UTCJul 16, 20:49 UTC4h 5m
2026-07-16 EJA681 - Jul 16, 13:40 UTCJul 16, 14:50 UTC1h 10m
2026-07-16 EJA681 MFR → SLC Jul 16, 00:55 UTCJul 16, 02:20 UTC1h 25m
2026-07-15 EJA681 BFI → MFR Jul 15, 22:55 UTCJul 16, 00:00 UTC1h 5m
2026-07-15 EJA681 - Jul 15, 20:55 UTCJul 15, 21:40 UTC45m
2026-07-15 EJA681 - Jul 15, 14:25 UTCJul 15, 19:55 UTC5h 30m
2026-07-14 EJA681 - Jul 14, 21:55 UTCJul 15, 00:15 UTC2h 19m
2026-07-14 EJA681 - Jul 14, 18:30 UTCJul 14, 19:20 UTC50m
2026-07-14 EJA681 - Jul 14, 15:55 UTCJul 14, 16:35 UTC40m
2026-07-14 EJA681 - Jul 14, 13:15 UTCJul 14, 13:55 UTC40m
2026-07-13 EJA681 - Jul 13, 18:35 UTCJul 13, 23:35 UTC5h 0m
2026-07-13 EJA681 - Jul 13, 02:45 UTCJul 13, 06:25 UTC3h 40m
2026-07-12 EJA681 - Jul 12, 22:20 UTCJul 13, 00:55 UTC2h 35m
2026-07-12 EJA681 - Jul 12, 19:30 UTCJul 12, 20:05 UTC35m
2026-07-12 EJA681 - Jul 12, 16:50 UTCJul 12, 18:10 UTC1h 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 Jul 26, 19:50 UTC.
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.