sensors Mode-S transponder

A2D0FB

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N28043 · PIPER PA-28-140/150/160/180 · operated by CAE OXFORD AVIATION ACADEMY PHOENIX INC

Hex
A2D0FB
Octal
50550373
Decimal
10,670,331
Country
US
Tail
N28043
Type
P28A
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 A2D0FB.

Country allocation

The ICAO 24-bit address A2D0FB 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
OXF5744 - 5 2026-04-13

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-13 OXF5744 - Apr 13, 22:35 UTCApr 13, 23:45 UTC1h 10m
2026-04-13 OXF5744 - Apr 13, 19:50 UTCApr 13, 21:20 UTC1h 30m
2026-04-13 OXF5744 - Apr 13, 19:05 UTCApr 13, 20:10 UTC1h 5m
2026-04-13 OXF5744 - Apr 13, 16:15 UTCApr 13, 17:55 UTC1h 40m
2026-04-13 OXF5744 - Apr 13, 15:55 UTCApr 13, 16:15 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 N28043 page for operator, model, and routing details .

Mode-S A2D0FB frequently asked

What is Mode-S code A2D0FB?
A2D0FB is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N28043.
Where is Mode-S A2D0FB registered?
Mode-S code A2D0FB 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 A2D0FB 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 A2D0FB, octal 50550373, decimal 10,670,331.
What flights does A2D0FB operate?
Mode-S A2D0FB has broadcast 1 distinct callsign, including OXF5744.