Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A806A1

ICAO 24-bit transponder address · allocated to United States

Hex
A806A1
Octal
52003241
Decimal
11,011,745
Country
US
No current signal · last broadcast Jul 26, 13:55 UTC
Flights observed
54
Distinct callsigns
1
Country
US
Last broadcast
Jul 26, 13:55 UTC

Last known position

Most recent position reported by Mode-S A806A1.

Country allocation

The ICAO 24-bit address A806A1 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 1 distinct

Callsign Airline Flights Last seen
N616SJ - 54 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 N616SJ - Jul 26, 13:05 UTCJul 26, 13:55 UTC50m
2026-07-24 N616SJ - Jul 24, 19:15 UTCJul 24, 19:35 UTC20m
2026-07-24 N616SJ - Jul 24, 17:50 UTCJul 24, 18:05 UTC15m
2026-07-23 N616SJ - Jul 23, 20:20 UTCJul 23, 21:20 UTC1h 0m
2026-07-21 N616SJ - Jul 21, 17:10 UTCJul 21, 17:25 UTC15m
2026-07-21 N616SJ - Jul 21, 11:15 UTCJul 21, 11:25 UTC10m
2026-07-17 N616SJ - Jul 17, 23:30 UTCJul 17, 23:55 UTC25m
2026-07-17 N616SJ - Jul 17, 16:44 UTCJul 17, 17:25 UTC40m
2026-07-14 N616SJ - Jul 14, 20:20 UTCJul 14, 21:20 UTC1h 0m
2026-07-14 N616SJ - Jul 14, 17:35 UTCJul 14, 17:45 UTC10m
2026-07-02 N616SJ - Jul 2, 17:10 UTCJul 2, 17:30 UTC20m
2026-07-02 N616SJ - Jul 2, 15:15 UTCJul 2, 16:20 UTC1h 5m
2026-06-29 N616SJ - Jun 29, 20:54 UTCJun 29, 21:05 UTC10m
2026-06-29 N616SJ - Jun 29, 11:29 UTCJun 29, 11:39 UTC10m
2026-06-27 N616SJ - Jun 27, 17:34 UTCJun 27, 17:49 UTC15m
2026-06-27 N616SJ - Jun 27, 14:54 UTCJun 27, 15:24 UTC30m
2026-06-24 N616SJ - Jun 24, 19:59 UTCJun 24, 20:20 UTC20m
2026-06-24 N616SJ - Jun 24, 18:39 UTCJun 24, 19:10 UTC30m
2026-06-24 N616SJ - Jun 24, 17:14 UTCJun 24, 17:45 UTC30m
2026-06-24 N616SJ - Jun 24, 16:05 UTCJun 24, 16:29 UTC25m
2026-06-24 N616SJ - Jun 24, 14:29 UTCJun 24, 15:00 UTC30m
2026-06-23 N616SJ - Jun 23, 18:14 UTCJun 23, 20:15 UTC2h 0m
2026-06-21 N616SJ - Jun 21, 01:45 UTCJun 21, 02:30 UTC45m
2026-06-18 N616SJ - Jun 18, 01:50 UTCJun 18, 02:15 UTC25m
2026-06-17 N616SJ - Jun 17, 20:50 UTCJun 17, 21:50 UTC1h 0m
2026-06-17 N616SJ - Jun 17, 19:50 UTCJun 17, 20:15 UTC25m
2026-06-17 N616SJ - Jun 17, 18:35 UTCJun 17, 18:56 UTC20m
2026-06-06 N616SJ - Jun 6, 19:54 UTCJun 6, 20:49 UTC55m
2026-06-04 N616SJ - Jun 4, 12:45 UTCJun 4, 14:10 UTC1h 25m
2026-06-02 N616SJ - Jun 2, 18:50 UTCJun 2, 19:10 UTC20m
2026-06-02 N616SJ - Jun 2, 17:25 UTCJun 2, 17:40 UTC15m
2026-06-01 N616SJ - Jun 1, 19:50 UTCJun 1, 20:05 UTC15m
2026-06-01 N616SJ - Jun 1, 18:45 UTCJun 1, 19:05 UTC20m
2026-05-20 N616SJ - May 20, 12:05 UTCMay 20, 13:05 UTC1h 0m
2026-05-18 N616SJ - May 18, 16:10 UTCMay 18, 16:25 UTC15m
2026-05-18 N616SJ - May 18, 14:15 UTCMay 18, 15:20 UTC1h 5m
2026-05-16 N616SJ - May 16, 16:15 UTCMay 16, 16:55 UTC40m
2026-05-16 N616SJ - May 16, 13:51 UTCMay 16, 15:20 UTC1h 30m
2026-05-13 N616SJ - May 13, 19:10 UTCMay 13, 19:50 UTC40m
2026-05-13 N616SJ - May 13, 17:05 UTCMay 13, 18:00 UTC55m
2026-05-01 N616SJ - May 1, 19:10 UTCMay 1, 19:40 UTC30m
2026-05-01 N616SJ - May 1, 17:55 UTCMay 1, 18:20 UTC25m
2026-04-29 N616SJ - Apr 29, 16:20 UTCApr 29, 18:05 UTC1h 45m
2026-04-28 N616SJ - Apr 28, 00:45 UTCApr 28, 01:50 UTC1h 5m
2026-04-26 N616SJ - Apr 26, 20:40 UTCApr 26, 20:55 UTC15m
2026-04-26 N616SJ - Apr 26, 18:20 UTCApr 26, 19:00 UTC40m
2026-04-26 N616SJ - Apr 26, 16:00 UTCApr 26, 17:05 UTC1h 5m
2026-04-21 N616SJ - Apr 21, 22:20 UTCApr 21, 22:55 UTC35m
2026-04-21 N616SJ - Apr 21, 20:15 UTCApr 21, 20:50 UTC35m
2026-04-20 N616SJ - Apr 20, 16:55 UTCApr 20, 17:15 UTC20m

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.

Mode-S A806A1 frequently asked

What is Mode-S code A806A1?
A806A1 is an ICAO 24-bit transponder address. Allocated to United States.
Where is Mode-S A806A1 registered?
Mode-S code A806A1 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 A806A1 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 13:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A806A1, octal 52003241, decimal 11,011,745.
What flights does A806A1 operate?
Mode-S A806A1 has broadcast 1 distinct callsign, including N616SJ.