sensors Mode-S transponder

A42DED

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N369C · operated by PIPER AIRCRAFT INC

Hex
A42DED
Octal
51026755
Decimal
10,759,661
Country
US
Tail
N369C
Type
P28A
No current signal · last broadcast 13h ago
Flights observed
6
Distinct callsigns
1
Country
US
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S A42DED.

Country allocation

The ICAO 24-bit address A42DED 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
N369C - 6 2026-04-14

Recent flights last 6

DateFlightRouteTakeoffLandingDuration
2026-04-14 N369C - Apr 14, 09:10 UTCApr 14, 09:30 UTC20m
2026-04-13 N369C - Apr 13, 17:45 UTCApr 13, 18:30 UTC45m
2026-04-13 N369C - Apr 13, 12:20 UTCApr 13, 12:45 UTC25m
2026-04-13 N369C - Apr 13, 11:55 UTCApr 13, 12:45 UTC50m
2026-04-13 N369C - Apr 13, 11:20 UTCApr 13, 12:15 UTC55m
2026-04-12 N369C - Apr 12, 19:25 UTCApr 12, 20:15 UTC50m

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 N369C page for operator, model, and routing details .

Mode-S A42DED frequently asked

What is Mode-S code A42DED?
A42DED is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N369C.
Where is Mode-S A42DED registered?
Mode-S code A42DED 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 A42DED 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 A42DED, octal 51026755, decimal 10,759,661.
What flights does A42DED operate?
Mode-S A42DED has broadcast 1 distinct callsign, including N369C.