sensors Mode-S transponder

A5B39D

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N467AA · operated by SCOTT SYKES

Hex
A5B39D
Octal
51331635
Decimal
10,859,421
Country
US
Tail
N467AA
No current signal · last broadcast 13h ago
Flights observed
11
Distinct callsigns
1
Country
US
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S A5B39D.

Country allocation

The ICAO 24-bit address A5B39D 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
N467AA - 11 2026-04-18

Recent flights last 11

DateFlightRouteTakeoffLandingDuration
2026-04-18 N467AA - Apr 18, 03:25 UTCApr 18, 03:55 UTC30m
2026-04-18 N467AA - Apr 18, 01:55 UTCApr 18, 03:20 UTC1h 25m
2026-04-17 N467AA - Apr 17, 23:25 UTCApr 18, 00:35 UTC1h 10m
2026-04-17 N467AA - Apr 17, 20:00 UTCApr 17, 20:45 UTC45m
2026-04-16 N467AA - Apr 16, 23:35 UTCApr 17, 00:30 UTC55m
2026-04-16 N467AA - Apr 16, 22:24 UTCApr 16, 22:54 UTC30m
2026-04-16 N467AA - Apr 16, 15:55 UTCApr 16, 16:35 UTC40m
2026-04-14 N467AA - Apr 14, 22:55 UTCApr 15, 00:10 UTC1h 15m
2026-04-14 N467AA - Apr 14, 22:30 UTCApr 14, 22:50 UTC20m
2026-04-14 N467AA - Apr 14, 19:00 UTCApr 14, 19:40 UTC40m
2026-04-13 N467AA - Apr 13, 22:20 UTCApr 13, 23:40 UTC1h 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 N467AA page for operator, model, and routing details .

Mode-S A5B39D frequently asked

What is Mode-S code A5B39D?
A5B39D is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N467AA.
Where is Mode-S A5B39D registered?
Mode-S code A5B39D 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 A5B39D broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A5B39D, octal 51331635, decimal 10,859,421.
What flights does A5B39D operate?
Mode-S A5B39D has broadcast 1 distinct callsign, including N467AA.