sensors Mode-S transponder

A026FC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N109JS · BOEING 737 MAX 8 · operated by BANK OF UTAH TRUSTEE

Hex
A026FC
Octal
50023374
Decimal
10,495,740
Country
US
Tail
N109JS
Type
B38M
Transponder active on ground
Flights observed
6
Distinct callsigns
4
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A026FC.

Country allocation

The ICAO 24-bit address A026FC 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 4 distinct

Callsign Airline Flights Last seen
AMX762 Aeroméxico 2 2026-04-13
AMX644 - 2 2026-04-13
AMX761 - 1 2026-04-12
AMX645 - 1 2026-04-13

Recent flights last 6

DateFlightRouteTakeoffLandingDuration
2026-04-13 AMX645 - Apr 13, 21:35 UTCApr 13, 22:55 UTC1h 20m
2026-04-13 AMX644 - Apr 13, 17:30 UTCApr 13, 19:15 UTC1h 45m
2026-04-13 AMX644 - Apr 13, 15:45 UTCApr 13, 15:55 UTC10m
2026-04-13 AMX762 BOG → MEX Apr 13, 00:20 UTCApr 13, 01:45 UTC1h 25m
2026-04-12 AMX762 BOG → MEX Apr 12, 23:55 UTCApr 13, 01:45 UTC1h 50m
2026-04-12 AMX761 - Apr 12, 19:10 UTCApr 12, 19:25 UTC15m

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 N109JS page for operator, model, and routing details .

Mode-S A026FC frequently asked

What is Mode-S code A026FC?
A026FC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N109JS.
Where is Mode-S A026FC registered?
Mode-S code A026FC 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 A026FC broadcasting right now?
Mode-S A026FC is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A026FC, octal 50023374, decimal 10,495,740.
What flights does A026FC operate?
Mode-S A026FC has broadcast 4 distinct callsigns, including AMX762, AMX644, AMX761, AMX645.