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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 Jul 26, 22:30 UTC
Flights observed
419
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:30 UTC

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 - 23 2026-07-16
JSX107 - 21 2026-07-10
JSX100 JSX Air 20 2026-07-16
JSX103 - 19 2026-07-16
JSX112 - 17 2026-07-09
JSX113 - 16 2026-07-09
JSX142 - 12 2026-07-09
JSX141 - 12 2026-07-09
JSX177 - 10 2026-07-16
JSX657 - 9 2026-07-03
JSX176 - 9 2026-07-15
JSX173 - 9 2026-07-09
JSX121 - 9 2026-07-13
JSX111 - 9 2026-07-08
JSX108 - 9 2026-07-08
JSX776 - 8 2026-07-05
JSX775 - 8 2026-07-05
JSX179 - 8 2026-07-15
JSX178 - 8 2026-07-15
JSX174 JSX Air 8 2026-04-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JSX650 LAS → OAK Jul 26, 22:20 UTCJul 26, 22:30 UTC10m
2026-07-26 JSX655 OAK → LAS Jul 26, 19:20 UTCJul 26, 20:30 UTC1h 10m
2026-07-26 JSX654 LAS → OAK Jul 26, 17:25 UTCJul 26, 18:30 UTC1h 5m
2026-07-26 JSX161 RNO → LAS Jul 26, 00:20 UTCJul 26, 01:20 UTC1h 0m
2026-07-25 JSX346 CLD → RNO Jul 25, 22:10 UTCJul 25, 23:15 UTC1h 5m
2026-07-25 JRX345 - Jul 25, 20:10 UTCJul 25, 21:30 UTC1h 20m
2026-07-25 JRX160 - Jul 25, 18:20 UTCJul 25, 19:10 UTC50m
2026-07-25 JSX311 SNA → LAS Jul 25, 02:20 UTCJul 25, 03:10 UTC50m
2026-07-25 JSX310 LAS → SNA Jul 25, 00:55 UTCJul 25, 01:40 UTC45m
2026-07-24 JSX151 CCR → LAS Jul 24, 21:50 UTCJul 24, 23:05 UTC1h 15m
2026-07-24 JSX150 LAS → CCR Jul 24, 19:50 UTCJul 24, 21:00 UTC1h 10m
2026-07-23 JSX303 SNA → LAS Jul 23, 20:10 UTCJul 23, 20:55 UTC45m
2026-07-23 JSX302 LAS → SNA Jul 23, 18:35 UTCJul 23, 19:20 UTC45m
2026-07-23 JSX301 SNA → LAS Jul 23, 16:35 UTCJul 23, 17:20 UTC45m
2026-07-23 JSX300 LAS → SNA Jul 23, 14:55 UTCJul 23, 15:35 UTC40m
2026-07-22 JSX415 LAS → SCF Jul 22, 23:00 UTCJul 22, 23:45 UTC45m
2026-07-18 JSX409 - Jul 18, 02:55 UTCJul 18, 03:40 UTC45m
2026-07-18 JSX408 SCF → LAS Jul 18, 01:20 UTCJul 18, 02:09 UTC50m
2026-07-17 JSX411 LAS → SCF Jul 17, 23:45 UTCJul 18, 00:35 UTC50m
2026-07-17 JSX651 OAK → LAS Jul 17, 21:10 UTCJul 17, 22:29 UTC1h 20m
2026-07-17 JSX650 LAS → OAK Jul 17, 19:20 UTCJul 17, 20:29 UTC1h 10m
2026-07-17 JSX655 OAK → LAS Jul 17, 16:59 UTCJul 17, 18:10 UTC1h 10m
2026-07-17 JSX654 LAS → OAK Jul 17, 14:55 UTCJul 17, 16:00 UTC1h 5m
2026-07-17 JSX311 SNA → LAS Jul 17, 02:45 UTCJul 17, 03:39 UTC55m
2026-07-17 JSX310 LAS → SNA Jul 17, 00:50 UTCJul 17, 01:29 UTC40m
2026-07-16 JSX151 CCR → LAS Jul 16, 22:05 UTCJul 16, 23:15 UTC1h 10m
2026-07-16 JSX150 LAS → CCR Jul 16, 20:05 UTCJul 16, 21:10 UTC1h 5m
2026-07-16 JSX106 BUR → LAS Jul 16, 17:40 UTCJul 16, 18:19 UTC40m
2026-07-16 JSX103 LAS → BUR Jul 16, 15:55 UTCJul 16, 16:40 UTC45m
2026-07-16 JSX100 BUR → LAS Jul 16, 14:25 UTCJul 16, 15:05 UTC40m
2026-07-16 JSX177 - Jul 16, 01:25 UTCJul 16, 02:20 UTC55m
2026-07-15 JSX176 BUR → OAK Jul 15, 23:40 UTCJul 16, 00:30 UTC50m
2026-07-15 JSX179 OAK → BUR Jul 15, 21:35 UTCJul 15, 22:35 UTC1h 0m
2026-07-15 JSX178 BUR → OAK Jul 15, 19:15 UTCJul 15, 20:05 UTC50m
2026-07-13 JSY9002 - Jul 13, 19:10 UTCJul 13, 21:15 UTC2h 5m
2026-07-13 JSY8002 - Jul 13, 15:30 UTCJul 13, 17:30 UTC2h 0m
2026-07-13 JSY9002 - Jul 13, 14:25 UTCJul 13, 14:50 UTC25m
2026-07-13 JSY181 OAK → BUR Jul 13, 03:55 UTCJul 13, 04:50 UTC55m
2026-07-13 JSY180 BUR → OAK Jul 13, 02:15 UTCJul 13, 03:05 UTC50m
2026-07-13 JSX121 LAS → BUR Jul 13, 00:50 UTCJul 13, 01:35 UTC45m
2026-07-12 JSX120 BUR → LAS Jul 12, 22:30 UTCJul 12, 23:15 UTC45m
2026-07-10 JSX107 LAS → BUR Jul 10, 20:35 UTCJul 10, 21:20 UTC45m
2026-07-10 JSX106 BUR → LAS Jul 10, 19:00 UTCJul 10, 19:40 UTC40m
2026-07-10 JSX103 LAS → BUR Jul 10, 16:10 UTCJul 10, 16:55 UTC45m
2026-07-10 JSX100 BUR → LAS Jul 10, 14:30 UTCJul 10, 15:10 UTC40m
2026-07-09 JSX142 CCR → BUR Jul 9, 20:20 UTCJul 9, 21:15 UTC55m
2026-07-09 JSX141 BUR → CCR Jul 9, 18:15 UTCJul 9, 19:15 UTC1h 0m
2026-07-09 JSX173 OAK → BUR Jul 9, 16:20 UTCJul 9, 17:10 UTC50m
2026-07-09 JSX170 BUR → OAK Jul 9, 14:10 UTCJul 9, 15:00 UTC50m
2026-07-09 JSX113 LAS → BUR Jul 9, 02:20 UTCJul 9, 03:05 UTC45m

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 Jul 26, 22:30 UTC.
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, JSX100, JSX103, JSX112.