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sensors Mode-S transponder

A2725D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N257JX · EMBRAER ERJ-135 · operated by DELUX PUBLIC CHARTER LLC

Hex
A2725D
Octal
50471135
Decimal
10,646,109
Country
US
Tail
N257JX
Type
E135
No current signal · last broadcast Jul 26, 20:00 UTC
Flights observed
321
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 20:00 UTC

Last known position

Most recent position reported by Mode-S A2725D.

Country allocation

The ICAO 24-bit address A2725D 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
JSX303 JSX Air 11 2026-07-25
JSX302 JSX Air 11 2026-07-25
JSX110 - 11 2026-07-18
JSX109 JSX Air 11 2026-07-17
JSX655 JSX Air 10 2026-07-23
JSX654 JSX Air 10 2026-07-23
JSX111 JSX Air 9 2026-07-18
JSX108 JSX Air 9 2026-07-18
JSX317 JSX Air 8 2026-07-26
JSX316 JSX Air 8 2026-07-26
JSX132 JSX Air 7 2026-07-25
JSX651 JSX Air 6 2026-05-28
JSX650 JSX Air 6 2026-05-28
JSX622 JSX Air 6 2026-07-18
JSX323 - 6 2026-07-09
JSX305 JSX Air 6 2026-07-26
JSX304 JSX Air 6 2026-07-25
JSX301 JSX Air 6 2026-07-25
JSX300 JSX Air 6 2026-07-25
JSX623 JSX Air 5 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JSX317 LAS → SNA Jul 26, 19:15 UTCJul 26, 20:00 UTC45m
2026-07-26 JSX316 SNA → LAS Jul 26, 17:35 UTCJul 26, 18:15 UTC40m
2026-07-26 JSX104 BUR → LAS Jul 26, 16:00 UTCJul 26, 16:40 UTC40m
2026-07-26 JSX105 LAS → BUR Jul 26, 14:15 UTCJul 26, 15:00 UTC45m
2026-07-26 JSX305 SNA → LAS Jul 26, 00:00 UTCJul 26, 00:40 UTC40m
2026-07-25 JSX304 LAS → SNA Jul 25, 22:35 UTCJul 25, 23:15 UTC40m
2026-07-25 JSX303 SNA → LAS Jul 25, 20:15 UTCJul 25, 21:00 UTC45m
2026-07-25 JSX302 LAS → SNA Jul 25, 18:30 UTCJul 25, 19:15 UTC45m
2026-07-25 JSX301 SNA → LAS Jul 25, 16:50 UTCJul 25, 17:35 UTC45m
2026-07-25 JSX300 LAS → SNA Jul 25, 15:15 UTCJul 25, 15:55 UTC40m
2026-07-25 JSX133 LAS → BUR Jul 25, 03:55 UTCJul 25, 04:35 UTC40m
2026-07-25 JSX132 BUR → LAS Jul 25, 02:15 UTCJul 25, 03:00 UTC45m
2026-07-25 JSX305 SNA → LAS Jul 25, 00:25 UTCJul 25, 01:10 UTC45m
2026-07-24 JSX304 LAS → SNA Jul 24, 22:35 UTCJul 24, 23:20 UTC45m
2026-07-24 JSX303 SNA → LAS Jul 24, 20:15 UTCJul 24, 20:55 UTC40m
2026-07-24 JSX302 LAS → SNA Jul 24, 18:50 UTCJul 24, 19:40 UTC50m
2026-07-23 JSX655 OAK → LAS Jul 23, 22:20 UTCJul 23, 23:35 UTC1h 15m
2026-07-23 JSX180 BUR → OAK Jul 23, 20:20 UTCJul 23, 21:10 UTC50m
2026-07-23 JSX181 OAK → BUR Jul 23, 18:35 UTCJul 23, 19:30 UTC55m
2026-07-23 JSX654 LAS → OAK Jul 23, 16:30 UTCJul 23, 17:35 UTC1h 5m
2026-07-22 JSX130 BUR → LAS Jul 22, 21:55 UTCJul 22, 22:35 UTC40m
2026-07-22 JSX129 BUR → LAS Jul 22, 20:25 UTCJul 22, 21:10 UTC45m
2026-07-21 JSX133 LAS → BUR Jul 21, 03:30 UTCJul 21, 04:15 UTC45m
2026-07-21 JSX132 BUR → LAS Jul 21, 01:50 UTCJul 21, 02:35 UTC45m
2026-07-21 JSX305 SNA → LAS Jul 21, 00:15 UTCJul 21, 01:00 UTC45m
2026-07-20 JSX304 LAS → SNA Jul 20, 22:30 UTCJul 20, 23:15 UTC45m
2026-07-20 JSX303 SNA → LAS Jul 20, 20:35 UTCJul 20, 21:20 UTC45m
2026-07-20 JSX302 LAS → SNA Jul 20, 19:00 UTCJul 20, 19:45 UTC45m
2026-07-18 JSX309 SNA → LAS Jul 18, 21:30 UTCJul 18, 22:15 UTC45m
2026-07-18 JSX308 LAS → SNA Jul 18, 19:50 UTCJul 18, 20:30 UTC40m
2026-07-18 JSX623 CLD → LAS Jul 18, 18:05 UTCJul 18, 18:55 UTC50m
2026-07-18 JSX622 LAS → CLD Jul 18, 16:25 UTCJul 18, 17:00 UTC35m
2026-07-18 JSX108 BUR → LAS Jul 18, 04:25 UTCJul 18, 05:05 UTC40m
2026-07-18 JSX111 LAS → BUR Jul 18, 02:35 UTCJul 18, 03:20 UTC46m
2026-07-18 JSX110 BUR → LAS Jul 18, 00:50 UTCJul 18, 01:34 UTC45m
2026-07-17 JSX109 LAS → BUR Jul 17, 23:00 UTCJul 17, 23:45 UTC45m
2026-07-17 JSX317 - Jul 17, 19:35 UTCJul 17, 20:20 UTC45m
2026-07-17 JSX316 - Jul 17, 18:19 UTCJul 17, 19:00 UTC40m
2026-07-17 JSX102 BUR → LAS Jul 17, 16:29 UTCJul 17, 17:15 UTC45m
2026-07-17 JSX101 LAS → BUR Jul 17, 14:30 UTCJul 17, 15:20 UTC50m
2026-07-17 JSX108 BUR → LAS Jul 17, 04:20 UTCJul 17, 05:04 UTC45m
2026-07-17 JSX111 LAS → BUR Jul 17, 01:55 UTCJul 17, 02:45 UTC50m
2026-07-16 JSX110 BUR → LAS Jul 16, 23:44 UTCJul 17, 00:25 UTC40m
2026-07-16 JSX109 LAS → BUR Jul 16, 22:00 UTCJul 16, 22:45 UTC45m
2026-07-16 JSX317 - Jul 16, 19:14 UTCJul 16, 20:00 UTC45m
2026-07-16 JSX316 - Jul 16, 17:30 UTCJul 16, 18:15 UTC45m
2026-07-16 JSX102 - Jul 16, 16:05 UTCJul 16, 16:44 UTC40m
2026-07-16 JSX101 LAS → BUR Jul 16, 14:20 UTCJul 16, 15:00 UTC40m
2026-07-16 JSX307 - Jul 16, 03:05 UTCJul 16, 03:50 UTC45m
2026-07-16 JSX306 - Jul 16, 01:30 UTCJul 16, 02:10 UTC40m

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 N257JX page for operator, model, and routing details .

Mode-S A2725D frequently asked

What is Mode-S code A2725D?
A2725D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N257JX.
Where is Mode-S A2725D registered?
Mode-S code A2725D 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 A2725D broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2725D, octal 50471135, decimal 10,646,109.
What flights does A2725D operate?
Mode-S A2725D has broadcast 20 distinct callsigns, including JSX303, JSX302, JSX110, JSX109, JSX655.