sensors Mode-S transponder

AD83A8

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N970AC · PIPER PA-28-140/150/160/180 · operated by NAPLES AIR CENTER INC

Hex
AD83A8
Octal
53301650
Decimal
11,371,432
Country
US
Tail
N970AC
Type
P28A
No current signal · last broadcast 1d ago
Flights observed
6
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AD83A8.

Country allocation

The ICAO 24-bit address AD83A8 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
N970AC - 6 2026-04-13

Recent flights last 6

DateFlightRouteTakeoffLandingDuration
2026-04-13 N970AC - Apr 13, 16:15 UTCApr 13, 16:50 UTC35m
2026-04-13 N970AC - Apr 13, 15:45 UTCApr 13, 16:15 UTC30m
2026-04-13 N970AC APF → APF Apr 13, 13:35 UTCApr 13, 14:40 UTC1h 5m
2026-04-13 N970AC - Apr 13, 12:20 UTCApr 13, 12:30 UTC10m
2026-04-13 N970AC - Apr 13, 11:55 UTCApr 13, 12:30 UTC35m
2026-04-13 N970AC - Apr 13, 11:30 UTCApr 13, 12:15 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 N970AC page for operator, model, and routing details .

Mode-S AD83A8 frequently asked

What is Mode-S code AD83A8?
AD83A8 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N970AC.
Where is Mode-S AD83A8 registered?
Mode-S code AD83A8 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 AD83A8 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 AD83A8, octal 53301650, decimal 11,371,432.
What flights does AD83A8 operate?
Mode-S AD83A8 has broadcast 1 distinct callsign, including N970AC.