Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A2B310

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N273QS · EMBRAER EMB545 Praetor 500 · operated by EMBRAER EXECUTIVE AIRCRAFT INC

Hex
A2B310
Octal
50531420
Decimal
10,662,672
Country
US
Tail
N273QS
Type
E545
No current signal · last broadcast 1d ago
Flights observed
105
Distinct callsigns
2
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A2B310.

Country allocation

The ICAO 24-bit address A2B310 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
EJA273 NetJets 102 2026-06-01
N273QS - 3 2026-05-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-01 EJA273 DAL → TEB Jun 1, 17:50 UTCJun 1, 19:25 UTC1h 35m
2026-06-01 EJA273 DAL → TEB Jun 1, 15:20 UTCJun 1, 16:50 UTC1h 30m
2026-06-01 EJA273 DAL → TEB Jun 1, 00:00 UTCJun 1, 02:20 UTC2h 20m
2026-05-31 EJA273 DAL → TEB May 31, 21:30 UTCMay 31, 22:10 UTC40m
2026-05-31 EJA273 DAL → TEB May 31, 16:15 UTCMay 31, 18:10 UTC1h 55m
2026-05-30 EJA273 DAL → TEB May 30, 17:30 UTCMay 30, 19:05 UTC1h 35m
2026-05-30 EJA273 DAL → TEB May 30, 13:35 UTCMay 30, 16:15 UTC2h 40m
2026-05-29 EJA273 DAL → TEB May 29, 21:50 UTCMay 29, 22:15 UTC25m
2026-05-29 EJA273 DAL → TEB May 29, 18:00 UTCMay 29, 20:20 UTC2h 20m
2026-05-28 EJA273 DAL → TEB May 28, 02:40 UTCMay 28, 02:55 UTC15m
2026-05-28 EJA273 DAL → TEB May 28, 01:06 UTCMay 28, 02:24 UTC1h 18m
2026-05-27 EJA273 DAL → TEB May 27, 23:15 UTCMay 28, 00:20 UTC1h 5m
2026-05-27 EJA273 DAL → TEB May 27, 21:10 UTCMay 27, 21:25 UTC15m
2026-05-27 EJA273 DAL → TEB May 27, 18:50 UTCMay 27, 20:20 UTC1h 30m
2026-05-27 EJA273 DAL → TEB May 27, 05:40 UTCMay 27, 06:49 UTC1h 10m
2026-05-27 EJA273 DAL → TEB May 27, 00:04 UTCMay 27, 00:25 UTC20m
2026-05-26 EJA273 DAL → TEB May 26, 18:45 UTCMay 26, 22:50 UTC4h 5m
2026-05-26 EJA273 DAL → TEB May 26, 15:45 UTCMay 26, 16:59 UTC1h 15m
2026-05-25 N273QS - May 25, 13:10 UTCMay 25, 20:45 UTC7h 34m
2026-05-24 EJA273 DAL → TEB May 24, 13:10 UTCMay 24, 13:50 UTC40m
2026-05-23 EJA273 DAL → TEB May 23, 21:40 UTCMay 23, 22:55 UTC1h 15m
2026-05-23 EJA273 DAL → TEB May 23, 18:45 UTCMay 23, 20:35 UTC1h 50m
2026-05-23 EJA273 DAL → TEB May 23, 16:40 UTCMay 23, 18:00 UTC1h 20m
2026-05-23 EJA273 DAL → TEB May 23, 13:20 UTCMay 23, 15:20 UTC2h 0m
2026-05-22 EJA273 DAL → TEB May 22, 22:15 UTCMay 23, 00:05 UTC1h 50m
2026-05-22 EJA273 DAL → TEB May 22, 20:05 UTCMay 22, 21:05 UTC1h 0m
2026-05-22 EJA273 DAL → TEB May 22, 17:15 UTCMay 22, 17:45 UTC30m
2026-05-22 EJA273 DAL → TEB May 22, 15:30 UTCMay 22, 16:15 UTC45m
2026-05-22 EJA273 DAL → TEB May 22, 13:50 UTCMay 22, 14:30 UTC40m
2026-05-22 EJA273 DAL → TEB May 22, 12:10 UTCMay 22, 12:45 UTC35m
2026-05-21 EJA273 DAL → TEB May 21, 20:25 UTCMay 21, 21:00 UTC35m
2026-05-21 EJA273 DAL → TEB May 21, 18:00 UTCMay 21, 19:20 UTC1h 20m
2026-05-21 EJA273 DAL → TEB May 21, 16:30 UTCMay 21, 17:10 UTC40m
2026-05-21 EJA273 DAL → TEB May 21, 12:50 UTCMay 21, 14:45 UTC1h 55m
2026-05-20 EJA273 DAL → TEB May 20, 18:30 UTCMay 20, 20:40 UTC2h 10m
2026-05-20 EJA273 DAL → TEB May 20, 16:10 UTCMay 20, 17:25 UTC1h 15m
2026-05-20 EJA273 DAL → TEB May 20, 14:00 UTCMay 20, 14:40 UTC40m
2026-05-20 EJA273 DAL → TEB May 20, 12:05 UTCMay 20, 12:20 UTC15m
2026-05-19 EJA273 DAL → TEB May 19, 17:50 UTCMay 19, 20:40 UTC2h 50m
2026-05-19 EJA273 DAL → TEB May 19, 15:55 UTCMay 19, 16:50 UTC55m
2026-05-18 EJA273 DAL → TEB May 18, 22:20 UTCMay 19, 00:10 UTC1h 50m
2026-05-18 EJA273 DAL → TEB May 18, 18:00 UTCMay 18, 18:50 UTC49m
2026-05-18 EJA273 DAL → TEB May 18, 16:15 UTCMay 18, 17:10 UTC55m
2026-05-18 EJA273 DAL → TEB May 18, 13:30 UTCMay 18, 14:45 UTC1h 15m
2026-05-18 EJA273 DAL → TEB May 18, 11:40 UTCMay 18, 12:10 UTC30m
2026-05-17 EJA273 DAL → TEB May 17, 21:45 UTCMay 17, 23:50 UTC2h 5m
2026-05-17 EJA273 DAL → TEB May 17, 17:55 UTCMay 17, 20:35 UTC2h 40m
2026-05-17 EJA273 DAL → TEB May 17, 02:55 UTCMay 17, 03:35 UTC40m
2026-05-17 EJA273 DAL → TEB May 17, 01:45 UTCMay 17, 02:05 UTC20m
2026-05-16 EJA273 DAL → TEB May 16, 23:25 UTCMay 16, 23:50 UTC25m

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 N273QS page for operator, model, and routing details .

Mode-S A2B310 frequently asked

What is Mode-S code A2B310?
A2B310 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N273QS.
Where is Mode-S A2B310 registered?
Mode-S code A2B310 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 A2B310 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2B310, octal 50531420, decimal 10,662,672.
What flights does A2B310 operate?
Mode-S A2B310 has broadcast 2 distinct callsigns, including EJA273, N273QS.