sensors Mode-S transponder

A6DED1

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N5416D · BEECH 35 Bonanza · operated by COOK CLAY B, GIBSON ROBERT L

Hex
A6DED1
Octal
51557321
Decimal
10,936,017
Country
US
Tail
N5416D
Type
BE35
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 A6DED1.

Country allocation

The ICAO 24-bit address A6DED1 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
N5416D - 5 2026-04-13

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-13 N5416D - Apr 13, 19:50 UTCApr 13, 20:15 UTC25m
2026-04-13 N5416D - Apr 13, 18:20 UTCApr 13, 20:10 UTC1h 50m
2026-04-13 N5416D - Apr 13, 16:15 UTCApr 13, 17:35 UTC1h 20m
2026-04-13 N5416D - Apr 13, 15:50 UTCApr 13, 17:35 UTC1h 45m
2026-04-13 N5416D - Apr 13, 15:30 UTCApr 13, 16:15 UTC45m

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 N5416D page for operator, model, and routing details .

Mode-S A6DED1 frequently asked

What is Mode-S code A6DED1?
A6DED1 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N5416D.
Where is Mode-S A6DED1 registered?
Mode-S code A6DED1 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 A6DED1 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 A6DED1, octal 51557321, decimal 10,936,017.
What flights does A6DED1 operate?
Mode-S A6DED1 has broadcast 1 distinct callsign, including N5416D.