sensors Mode-S transponder

A1F75F

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N226AV · operated by N286SA LLC

Hex
A1F75F
Octal
50373537
Decimal
10,614,623
Country
US
Tail
N226AV
Type
C172
Broadcasting now · callsign AVL226 · 4,225 ft
Flights observed
6
Distinct callsigns
1
Country
US
Last broadcast
23h ago

Current position

A1F75F is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A1F75F 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
AVL226 - 6 2026-04-13

Recent flights last 6

DateFlightRouteTakeoffLandingDuration
2026-04-13 AVL226 - Apr 13, 22:20 UTCApr 13, 23:40 UTC1h 20m
2026-04-13 AVL226 - Apr 13, 16:15 UTCApr 13, 17:05 UTC50m
2026-04-13 AVL226 - Apr 13, 15:50 UTCApr 13, 17:05 UTC1h 15m
2026-04-13 AVL226 - Apr 13, 15:40 UTCApr 13, 16:15 UTC35m
2026-04-13 AVL226 - Apr 13, 12:20 UTCApr 13, 14:55 UTC2h 35m
2026-04-12 AVL226 - Apr 12, 19:15 UTCApr 12, 20:10 UTC55m

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 N226AV page for operator, model, and routing details .

Mode-S A1F75F frequently asked

What is Mode-S code A1F75F?
A1F75F is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N226AV.
Where is Mode-S A1F75F registered?
Mode-S code A1F75F 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 A1F75F broadcasting right now?
Yes. Mode-S A1F75F is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1F75F, octal 50373537, decimal 10,614,623.
What flights does A1F75F operate?
Mode-S A1F75F has broadcast 1 distinct callsign, including AVL226.