Apparatus

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sensors Mode-S transponder

A23FB9

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N244JX · EMBRAER ERJ-145 · operated by DELUX PUBLIC CHARTER LLC

Hex
A23FB9
Octal
50437671
Decimal
10,633,145
Country
US
Tail
N244JX
Type
E145
No current signal · last broadcast 5h ago
Flights observed
101
Distinct callsigns
20
Country
US
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S A23FB9.

Country allocation

The ICAO 24-bit address A23FB9 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 20 distinct

Callsign Airline Flights Last seen
JSX203 JSX Air 11 2026-05-29
JSX202 JSX Air 9 2026-05-27
JSX520 JSX Air 5 2026-05-29
JSX521 JSX Air 4 2026-05-29
JSX8251 - 3 2026-04-17
JSX286 JSX Air 3 2026-05-06
JSX281 JSX Air 3 2026-05-29
JSX280 JSX Air 3 2026-05-29
JSX981 JSX Air 2 2026-05-18
JSX980 JSX Air 2 2026-05-18
JSX9188 JSX Air 2 2026-05-27
JSX9160 - 2 2026-04-14
JSX8502 - 2 2026-05-20
JSX750 JSX Air 2 2026-05-22
JSX625 JSX Air 2 2026-04-28
JSX624 JSX Air 2 2026-04-28
JSX413 JSX Air 2 2026-04-29
JSX412 JSX Air 2 2026-04-29
JSX293 JSX Air 2 2026-05-18
JSX292 JSX Air 2 2026-05-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 JSX521 DSI → DAL May 29, 18:15 UTCMay 29, 20:00 UTC1h 45m
2026-05-29 JSX520 DAL → DSI May 29, 15:50 UTCMay 29, 17:10 UTC1h 20m
2026-05-29 JSX281 HOU → DAL May 29, 14:00 UTCMay 29, 14:45 UTC45m
2026-05-29 JSX280 DAL → HOU May 29, 12:20 UTCMay 29, 13:05 UTC45m
2026-05-29 JSX203 SNA → LAS May 29, 02:00 UTCMay 29, 04:20 UTC2h 20m
2026-05-29 JSX203 SNA → LAS May 29, 00:15 UTCMay 29, 00:55 UTC40m
2026-05-28 JSX113 LAS → BUR May 28, 02:35 UTCMay 28, 03:20 UTC45m
2026-05-27 JSX202 DAL → LAS May 27, 16:45 UTCMay 27, 19:15 UTC2h 30m
2026-05-27 JSX9188 - May 27, 00:59 UTCMay 27, 01:19 UTC20m
2026-05-26 JSX9188 - May 26, 16:50 UTCMay 26, 23:29 UTC6h 40m
2026-05-26 JSX203 SNA → LAS May 26, 00:29 UTCMay 26, 03:00 UTC2h 30m
2026-05-25 JSX203 SNA → LAS May 25, 22:19 UTCMay 25, 23:00 UTC40m
2026-05-25 JSX202 DAL → LAS May 25, 20:34 UTCMay 25, 21:24 UTC50m
2026-05-24 JSX202 DAL → LAS May 24, 20:00 UTCMay 24, 20:50 UTC50m
2026-05-22 JSX410 SCF → LAS May 22, 21:25 UTCMay 22, 22:10 UTC45m
2026-05-22 JSX751 SNA → SCF May 22, 19:30 UTCMay 22, 20:20 UTC50m
2026-05-22 JSX750 DAL → SCF May 22, 17:40 UTCMay 22, 18:35 UTC55m
2026-05-22 JSX750 DAL → SCF May 22, 14:20 UTCMay 22, 16:30 UTC2h 10m
2026-05-21 JSX8187 - May 21, 20:30 UTCMay 22, 02:30 UTC6h 0m
2026-05-21 JSX9187 - May 21, 18:20 UTCMay 21, 18:35 UTC15m
2026-05-20 JSX8502 - May 20, 19:35 UTCMay 20, 20:35 UTC1h 0m
2026-05-20 JSX9502 - May 20, 17:05 UTCMay 20, 18:05 UTC1h 0m
2026-05-18 JSX293 HOU → DAL May 18, 17:45 UTCMay 18, 18:30 UTC44m
2026-05-18 JSX292 DAL → HOU May 18, 16:15 UTCMay 18, 17:05 UTC50m
2026-05-18 JSX981 HOB → DAL May 18, 14:10 UTCMay 18, 15:15 UTC1h 5m
2026-05-18 JSX980 DAL → HOB May 18, 12:30 UTCMay 18, 13:35 UTC1h 5m
2026-05-17 JSX281 HOU → DAL May 17, 17:50 UTCMay 17, 18:30 UTC40m
2026-05-17 JSX280 DAL → HOU May 17, 16:15 UTCMay 17, 17:05 UTC50m
2026-05-17 JSX981 HOB → DAL May 17, 14:05 UTCMay 17, 15:10 UTC1h 5m
2026-05-17 JSX980 DAL → HOB May 17, 12:25 UTCMay 17, 13:25 UTC1h 0m
2026-05-16 JSX1077 - May 16, 14:46 UTCMay 16, 21:40 UTC6h 55m
2026-05-14 JSX1069 - May 14, 14:45 UTCMay 14, 21:35 UTC6h 50m
2026-05-11 JSX1065 - May 11, 14:55 UTCMay 11, 21:50 UTC6h 56m
2026-05-10 JSX1062 - May 10, 14:45 UTCMay 10, 22:09 UTC7h 25m
2026-05-09 JSX511 MIA → DAL May 9, 19:30 UTCMay 9, 22:55 UTC3h 25m
2026-05-09 JSX510 DAL → OPF May 9, 15:55 UTCMay 9, 18:15 UTC2h 20m
2026-05-08 JSX1081 - May 8, 14:40 UTCMay 8, 21:15 UTC6h 35m
2026-05-07 JSX1077 - May 7, 15:05 UTCMay 7, 21:40 UTC6h 35m
2026-05-07 JSX203 SNA → LAS May 7, 00:20 UTCMay 7, 02:40 UTC2h 20m
2026-05-06 JSX203 SNA → LAS May 6, 22:30 UTCMay 6, 23:15 UTC45m
2026-05-06 JSX202 DAL → LAS May 6, 20:25 UTCMay 6, 21:00 UTC35m
2026-05-06 JSX202 DAL → LAS May 6, 16:30 UTCMay 6, 19:20 UTC2h 49m
2026-05-06 JSX285 HOU → DAL May 6, 03:05 UTCMay 6, 03:40 UTC35m
2026-05-06 JSX286 DAL → HOU May 6, 01:10 UTCMay 6, 01:55 UTC45m
2026-05-04 JSX1073 - May 4, 14:45 UTCMay 4, 21:35 UTC6h 51m
2026-05-03 JSX293 HOU → DAL May 3, 22:34 UTCMay 3, 23:20 UTC45m
2026-05-03 JSX292 DAL → HOU May 3, 21:00 UTCMay 3, 21:44 UTC45m
2026-05-03 JSX521 DSI → DAL May 3, 18:09 UTCMay 3, 20:00 UTC1h 50m
2026-05-03 JSX520 DAL → DSI May 3, 15:40 UTCMay 3, 16:55 UTC1h 15m
2026-05-01 JSX203 SNA → LAS May 1, 00:50 UTCMay 1, 03:10 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 N244JX page for operator, model, and routing details .

Mode-S A23FB9 frequently asked

What is Mode-S code A23FB9?
A23FB9 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N244JX.
Where is Mode-S A23FB9 registered?
Mode-S code A23FB9 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 A23FB9 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A23FB9, octal 50437671, decimal 10,633,145.
What flights does A23FB9 operate?
Mode-S A23FB9 has broadcast 20 distinct callsigns, including JSX203, JSX202, JSX520, JSX521, JSX8251.