sensors Mode-S transponder

A28DDA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N264AA · operated by FF22 LLC

Hex
A28DDA
Octal
50506732
Decimal
10,653,146
Country
US
Tail
N264AA
Type
P28A
No current signal · last broadcast 1d ago
Flights observed
7
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A28DDA.

Country allocation

The ICAO 24-bit address A28DDA 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
N264AA - 7 2026-04-13

Recent flights last 7

DateFlightRouteTakeoffLandingDuration
2026-04-13 N264AA - Apr 13, 19:50 UTCApr 13, 20:20 UTC30m
2026-04-13 N264AA - Apr 13, 18:15 UTCApr 13, 20:10 UTC1h 55m
2026-04-13 N264AA - Apr 13, 16:15 UTCApr 13, 16:45 UTC30m
2026-04-13 N264AA LEE → SFB Apr 13, 15:50 UTCApr 13, 16:45 UTC55m
2026-04-13 N264AA - Apr 13, 15:15 UTCApr 13, 16:15 UTC1h 0m
2026-04-13 N264AA - Apr 13, 12:55 UTCApr 13, 14:05 UTC1h 10m
2026-04-13 N264AA - Apr 13, 00:40 UTCApr 13, 03:00 UTC2h 20m

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 N264AA page for operator, model, and routing details .

Mode-S A28DDA frequently asked

What is Mode-S code A28DDA?
A28DDA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N264AA.
Where is Mode-S A28DDA registered?
Mode-S code A28DDA 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 A28DDA 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 A28DDA, octal 50506732, decimal 10,653,146.
What flights does A28DDA operate?
Mode-S A28DDA has broadcast 1 distinct callsign, including N264AA.