Apparatus

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sensors Mode-S transponder

A25FCA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N252JX · EMBRAER ERJ-135 · operated by BANK OF UTAH TRUSTEE

Hex
A25FCA
Octal
50457712
Decimal
10,641,354
Country
US
Tail
N252JX
Type
E135
No current signal · last broadcast 4h ago
Flights observed
174
Distinct callsigns
20
Country
US
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S A25FCA.

Country allocation

The ICAO 24-bit address A25FCA 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
JSX106 JSX Air 11 2026-05-28
JSX107 JSX Air 10 2026-05-28
JSX174 JSX Air 8 2026-04-22
JSX177 JSX Air 7 2026-04-23
JSX175 JSX Air 7 2026-04-22
JSX103 JSX Air 7 2026-05-28
JSX100 JSX Air 7 2026-05-28
JSX178 JSX Air 6 2026-04-20
JSX113 JSX Air 6 2026-05-29
JSX112 JSX Air 6 2026-05-29
JSX657 JSX Air 5 2026-05-11
JSX121 JSX Air 5 2026-05-28
JSX120 JSX Air 5 2026-05-28
JSX173 JSX Air 4 2026-05-29
JSX142 JSX Air 4 2026-05-29
JSX141 JSX Air 4 2026-05-29
JSX656 JSX Air 3 2026-05-11
JSX170 JSX Air 3 2026-05-29
JSX111 JSX Air 3 2026-05-15
JSX110 JSX Air 3 2026-05-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 JSX142 CCR → BUR May 29, 20:10 UTCMay 29, 21:05 UTC55m
2026-05-29 JSX141 BUR → CCR May 29, 18:35 UTCMay 29, 19:35 UTC1h 0m
2026-05-29 JSX173 OAK → BUR May 29, 16:35 UTCMay 29, 17:25 UTC50m
2026-05-29 JSX170 BUR → OAK May 29, 15:00 UTCMay 29, 15:55 UTC55m
2026-05-29 JSX113 LAS → BUR May 29, 02:40 UTCMay 29, 03:30 UTC50m
2026-05-29 JSX112 BUR → LAS May 29, 00:45 UTCMay 29, 01:20 UTC35m
2026-05-28 JSX121 LAS → BUR May 28, 23:05 UTCMay 28, 23:55 UTC50m
2026-05-28 JSX120 BUR → LAS May 28, 21:15 UTCMay 28, 21:55 UTC40m
2026-05-28 JSX107 LAS → BUR May 28, 19:20 UTCMay 28, 20:10 UTC50m
2026-05-28 JSX106 BUR → LAS May 28, 17:30 UTCMay 28, 18:10 UTC40m
2026-05-28 JSX103 LAS → BUR May 28, 15:55 UTCMay 28, 16:40 UTC45m
2026-05-28 JSX100 BUR → LAS May 28, 14:30 UTCMay 28, 15:00 UTC30m
2026-05-26 JSX107 LAS → BUR May 26, 19:15 UTCMay 26, 20:05 UTC50m
2026-05-26 JSX106 BUR → LAS May 26, 17:30 UTCMay 26, 18:10 UTC40m
2026-05-26 JSX103 LAS → BUR May 26, 15:54 UTCMay 26, 16:40 UTC45m
2026-05-26 JSX100 BUR → LAS May 26, 14:24 UTCMay 26, 15:05 UTC40m
2026-05-26 JSX113 LAS → BUR May 26, 02:19 UTCMay 26, 03:15 UTC55m
2026-05-26 JSX112 BUR → LAS May 26, 00:39 UTCMay 26, 01:24 UTC45m
2026-05-25 JSX121 LAS → BUR May 25, 23:19 UTCMay 26, 00:04 UTC45m
2026-05-25 JSX120 BUR → LAS May 25, 21:09 UTCMay 25, 21:54 UTC45m
2026-05-23 JSX109 LAS → BUR May 23, 23:40 UTCMay 24, 00:30 UTC50m
2026-05-23 JSX110 BUR → LAS May 23, 21:50 UTCMay 23, 22:40 UTC50m
2026-05-23 JSX115 LAS → BUR May 23, 20:05 UTCMay 23, 21:00 UTC55m
2026-05-23 JSX114 BUR → LAS May 23, 18:10 UTCMay 23, 18:55 UTC45m
2026-05-22 JSX9003 SNA → BUR May 22, 23:40 UTCMay 22, 23:55 UTC15m
2026-05-22 JSX8003 FST → SNA May 22, 20:55 UTCMay 22, 22:55 UTC2h 0m
2026-05-22 JSX9003 SNA → BUR May 22, 18:05 UTCMay 22, 20:05 UTC2h 0m
2026-05-22 JSX185 OAK → BUR May 22, 01:05 UTCMay 22, 02:00 UTC55m
2026-05-21 JSX184 BUR → OAK May 21, 23:00 UTCMay 21, 23:55 UTC55m
2026-05-21 JSX183 OAK → BUR May 21, 20:45 UTCMay 21, 21:40 UTC55m
2026-05-21 JSX182 BUR → OAK May 21, 18:45 UTCMay 21, 19:35 UTC50m
2026-05-19 JSX129 BUR → LAS May 19, 17:45 UTCMay 19, 18:35 UTC50m
2026-05-18 JSX303 SNA → LAS May 18, 21:35 UTCMay 18, 22:15 UTC40m
2026-05-18 JSX302 LAS → SNA May 18, 19:10 UTCMay 18, 19:55 UTC45m
2026-05-17 JSX303 SNA → LAS May 17, 20:10 UTCMay 17, 20:55 UTC45m
2026-05-17 JSX302 LAS → SNA May 17, 18:45 UTCMay 17, 19:25 UTC40m
2026-05-17 JSX301 SNA → LAS May 17, 16:20 UTCMay 17, 17:10 UTC50m
2026-05-17 JSX300 LAS → SNA May 17, 14:40 UTCMay 17, 15:20 UTC40m
2026-05-16 JSX9183 TRM → LAS May 16, 18:55 UTCMay 16, 19:30 UTC35m
2026-05-16 JSX8183 - May 16, 17:15 UTCMay 16, 17:40 UTC25m
2026-05-16 JSX305 SNA → LAS May 16, 00:05 UTCMay 16, 00:45 UTC40m
2026-05-15 JSX304 LAS → SNA May 15, 22:30 UTCMay 15, 23:15 UTC45m
2026-05-15 JSX321 LAX → LAS May 15, 20:05 UTCMay 15, 20:45 UTC40m
2026-05-15 JSX320 LAS → LAX May 15, 18:15 UTCMay 15, 19:00 UTC45m
2026-05-15 JSX108 BUR → LAS May 15, 02:30 UTCMay 15, 03:10 UTC40m
2026-05-15 JSX111 LAS → BUR May 15, 01:10 UTCMay 15, 01:50 UTC40m
2026-05-14 JSX110 BUR → LAS May 14, 23:25 UTCMay 15, 00:10 UTC45m
2026-05-14 JSX110 BUR → LAS May 14, 22:40 UTCMay 14, 23:10 UTC30m
2026-05-14 JSX109 LAS → BUR May 14, 21:50 UTCMay 14, 22:30 UTC40m
2026-05-14 JSX317 LAS → SNA May 14, 19:35 UTCMay 14, 20:25 UTC50m

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 N252JX page for operator, model, and routing details .

Mode-S A25FCA frequently asked

What is Mode-S code A25FCA?
A25FCA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N252JX.
Where is Mode-S A25FCA registered?
Mode-S code A25FCA 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 A25FCA broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A25FCA, octal 50457712, decimal 10,641,354.
What flights does A25FCA operate?
Mode-S A25FCA has broadcast 20 distinct callsigns, including JSX106, JSX107, JSX174, JSX177, JSX175.