Apparatus

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sensors Mode-S transponder

A2A1DB

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N269QS · BOMBARDIER CL-600 Challenger · operated by NETJETS SALES INC, ACCORDION INVESTMENTS LLC, VOGEL DANIEL, VOGEL HEATHER ELIZABETH, DLR COTINGA LLC, KYTE DONALD J TRUSTEE

Hex
A2A1DB
Octal
50520733
Decimal
10,658,267
Country
US
Tail
N269QS
Type
CL60
No current signal · last broadcast 2d ago
Flights observed
105
Distinct callsigns
2
Country
US
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S A2A1DB.

Country allocation

The ICAO 24-bit address A2A1DB 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
EJA269 - 98 2026-07-10
N269QS - 7 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-11 N269QS - Jul 11, 20:35 UTCJul 11, 20:50 UTC15m
2026-07-11 N269QS - Jul 11, 18:50 UTCJul 11, 19:15 UTC25m
2026-07-11 N269QS - Jul 11, 15:50 UTCJul 11, 16:15 UTC25m
2026-07-10 EJA269 - Jul 10, 21:25 UTCJul 10, 23:00 UTC1h 35m
2026-07-10 EJA269 - Jul 10, 19:15 UTCJul 10, 20:05 UTC50m
2026-07-10 EJA269 - Jul 10, 16:25 UTCJul 10, 17:55 UTC1h 30m
2026-07-10 EJA269 - Jul 10, 13:00 UTCJul 10, 15:30 UTC2h 30m
2026-07-09 EJA269 - Jul 9, 18:45 UTCJul 9, 19:30 UTC45m
2026-07-09 EJA269 - Jul 9, 14:55 UTCJul 9, 17:45 UTC2h 50m
2026-07-09 EJA269 - Jul 9, 00:15 UTCJul 9, 01:05 UTC50m
2026-07-08 EJA269 - Jul 8, 19:25 UTCJul 8, 23:30 UTC4h 5m
2026-07-08 EJA269 - Jul 8, 15:40 UTCJul 8, 17:15 UTC1h 35m
2026-07-06 EJA269 - Jul 6, 20:10 UTCJul 6, 22:15 UTC2h 5m
2026-07-06 EJA269 BFI → BLI Jul 6, 18:25 UTCJul 6, 18:45 UTC20m
2026-07-06 EJA269 ORF → BFI Jul 6, 11:20 UTCJul 6, 16:25 UTC5h 5m
2026-07-05 EJA269 - Jul 5, 21:35 UTCJul 5, 22:35 UTC1h 0m
2026-07-05 EJA269 - Jul 5, 16:50 UTCJul 5, 18:05 UTC1h 15m
2026-07-04 EJA269 - Jul 4, 21:55 UTCJul 4, 22:20 UTC25m
2026-06-27 EJA269 - Jun 27, 15:24 UTCJun 27, 16:55 UTC1h 30m
2026-06-19 EJA269 - Jun 19, 15:59 UTCJun 19, 19:09 UTC3h 10m
2026-06-16 EJA269 TEB → MIA Jun 16, 20:10 UTCJun 16, 22:45 UTC2h 35m
2026-06-16 EJA269 - Jun 16, 18:39 UTCJun 16, 19:05 UTC25m
2026-06-16 EJA269 - Jun 16, 16:05 UTCJun 16, 17:35 UTC1h 30m
2026-06-15 EJA269 - Jun 15, 23:04 UTCJun 16, 00:05 UTC1h 0m
2026-06-12 EJA269 SCE → MDW Jun 12, 22:20 UTCJun 13, 02:10 UTC3h 50m
2026-06-12 EJA269 SCE → MDW Jun 12, 16:50 UTCJun 12, 17:25 UTC35m
2026-06-10 EJA269 SCE → MDW Jun 10, 03:20 UTCJun 10, 04:10 UTC50m
2026-06-10 N269QS - Jun 10, 01:25 UTCJun 10, 02:25 UTC1h 0m
2026-06-09 N269QS - Jun 9, 20:35 UTCJun 9, 20:50 UTC15m
2026-05-31 EJA269 SCE → MDW May 31, 19:25 UTCMay 31, 23:55 UTC4h 30m
2026-05-31 N269QS - May 31, 15:25 UTCMay 31, 17:50 UTC2h 25m
2026-05-30 N269QS - May 30, 18:35 UTCMay 30, 20:50 UTC2h 15m
2026-05-29 EJA269 SCE → MDW May 29, 21:40 UTCMay 29, 22:45 UTC1h 5m
2026-05-29 EJA269 SCE → MDW May 29, 19:30 UTCMay 29, 20:50 UTC1h 20m
2026-05-29 EJA269 SCE → MDW May 29, 18:00 UTCMay 29, 18:40 UTC40m
2026-05-29 EJA269 SCE → MDW May 29, 01:50 UTCMay 29, 04:40 UTC2h 50m
2026-05-28 EJA269 SCE → MDW May 28, 23:10 UTCMay 29, 00:15 UTC1h 5m
2026-05-27 EJA269 SCE → MDW May 27, 22:20 UTCMay 28, 01:45 UTC3h 25m
2026-05-27 EJA269 SCE → MDW May 27, 16:10 UTCMay 27, 19:10 UTC3h 0m
2026-05-26 EJA269 SCE → MDW May 26, 21:20 UTCMay 26, 22:20 UTC1h 0m
2026-05-26 EJA269 SCE → MDW May 26, 03:50 UTCMay 26, 05:00 UTC1h 10m
2026-05-25 EJA269 SCE → MDW May 25, 23:54 UTCMay 26, 01:34 UTC1h 40m
2026-05-25 EJA269 SCE → MDW May 25, 17:30 UTCMay 25, 19:00 UTC1h 30m
2026-05-24 EJA269 SCE → MDW May 24, 20:30 UTCMay 24, 23:46 UTC3h 16m
2026-05-24 EJA269 SCE → MDW May 24, 18:30 UTCMay 24, 18:55 UTC25m
2026-05-22 EJA269 SCE → MDW May 22, 19:00 UTCMay 22, 19:45 UTC45m
2026-05-22 EJA269 SCE → MDW May 22, 17:35 UTCMay 22, 18:00 UTC25m
2026-05-22 EJA269 SCE → MDW May 22, 14:20 UTCMay 22, 16:00 UTC1h 40m
2026-05-22 EJA269 SCE → MDW May 22, 11:45 UTCMay 22, 12:45 UTC1h 0m
2026-05-21 EJA269 SCE → MDW May 21, 21:40 UTCMay 21, 23:00 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 N269QS page for operator, model, and routing details .

Mode-S A2A1DB frequently asked

What is Mode-S code A2A1DB?
A2A1DB is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N269QS.
Where is Mode-S A2A1DB registered?
Mode-S code A2A1DB 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 A2A1DB 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 A2A1DB, octal 50520733, decimal 10,658,267.
What flights does A2A1DB operate?
Mode-S A2A1DB has broadcast 2 distinct callsigns, including EJA269, N269QS.