sensors Mode-S transponder

AD26B2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N9466X · CESSNA 172 Skyhawk · operated by FLIGHT TRAINER LLC

Hex
AD26B2
Octal
53223262
Decimal
11,347,634
Country
US
Tail
N9466X
Type
C172
No current signal · last broadcast 1d ago
Flights observed
5
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AD26B2.

Country allocation

The ICAO 24-bit address AD26B2 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 1 distinct

Callsign Airline Flights Last seen
CXK198 - 5 2026-04-13

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-13 CXK198 - Apr 13, 16:15 UTCApr 13, 16:30 UTC15m
2026-04-13 CXK198 - Apr 13, 15:50 UTCApr 13, 16:30 UTC40m
2026-04-13 CXK198 - Apr 13, 14:55 UTCApr 13, 16:15 UTC1h 20m
2026-04-13 CXK198 - Apr 13, 13:55 UTCApr 13, 14:10 UTC15m
2026-04-13 CXK198 - Apr 13, 12:20 UTCApr 13, 12:40 UTC20m

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 N9466X page for operator, model, and routing details .

Mode-S AD26B2 frequently asked

What is Mode-S code AD26B2?
AD26B2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N9466X.
Where is Mode-S AD26B2 registered?
Mode-S code AD26B2 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 AD26B2 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD26B2, octal 53223262, decimal 11,347,634.
What flights does AD26B2 operate?
Mode-S AD26B2 has broadcast 1 distinct callsign, including CXK198.