sensors Mode-S transponder

A1F2D6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N2244W · CESSNA T182 Turbo Skylane · operated by TEXTRON AVIATION INC

Hex
A1F2D6
Octal
50371326
Decimal
10,613,462
Country
US
Tail
N2244W
Type
C82S
No current signal · last broadcast 3d ago
Flights observed
2
Distinct callsigns
2
Country
US
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S A1F2D6.

Country allocation

The ICAO 24-bit address A1F2D6 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 2 distinct

Callsign Airline Flights Last seen
CSTT67 - 1 2026-05-20
CSTT44 - 1 2026-05-26

Recent flights last 2

DateFlightRouteTakeoffLandingDuration
2026-05-26 CSTT44 - May 26, 16:30 UTCMay 26, 17:44 UTC1h 15m
2026-05-20 CSTT67 ICT → ICT May 20, 14:50 UTCMay 20, 16:15 UTC1h 25m

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 N2244W page for operator, model, and routing details .

Mode-S A1F2D6 frequently asked

What is Mode-S code A1F2D6?
A1F2D6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N2244W.
Where is Mode-S A1F2D6 registered?
Mode-S code A1F2D6 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 A1F2D6 broadcasting right now?
No active broadcast right now. Last signal was 3d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1F2D6, octal 50371326, decimal 10,613,462.
What flights does A1F2D6 operate?
Mode-S A1F2D6 has broadcast 2 distinct callsigns, including CSTT67, CSTT44.