sensors Mode-S transponder

ADA0A8

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N97745 · CESSNA 182 Skylane · operated by ARMSTRONG JOHN TRUSTEE, ARMSTRONG GAYLE TRUSTEE

Hex
ADA0A8
Octal
53320250
Decimal
11,378,856
Country
US
Tail
N97745
Type
C182
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 ADA0A8.

Country allocation

The ICAO 24-bit address ADA0A8 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
N97745 - 5 2026-04-13

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-13 N97745 - Apr 13, 19:45 UTCApr 13, 20:10 UTC25m
2026-04-13 N97745 - Apr 13, 18:25 UTCApr 13, 18:50 UTC25m
2026-04-13 N97745 - Apr 13, 16:30 UTCApr 13, 17:45 UTC1h 15m
2026-04-13 N97745 - Apr 13, 15:50 UTCApr 13, 16:10 UTC20m
2026-04-13 N97745 - Apr 13, 14:00 UTCApr 13, 14:45 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 N97745 page for operator, model, and routing details .

Mode-S ADA0A8 frequently asked

What is Mode-S code ADA0A8?
ADA0A8 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N97745.
Where is Mode-S ADA0A8 registered?
Mode-S code ADA0A8 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 ADA0A8 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 ADA0A8, octal 53320250, decimal 11,378,856.
What flights does ADA0A8 operate?
Mode-S ADA0A8 has broadcast 1 distinct callsign, including N97745.