sensors Mode-S transponder

AAC111

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N792SP · CESSNA 172 Skyhawk · operated by UNIVERSITY OF ALASKA ANCHORAGE

Hex
AAC111
Octal
52540421
Decimal
11,190,545
Country
US
Tail
N792SP
Type
C172
No current signal · last broadcast 23h ago
Flights observed
5
Distinct callsigns
1
Country
US
Last broadcast
23h ago

Last known position

Most recent position reported by Mode-S AAC111.

Country allocation

The ICAO 24-bit address AAC111 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
N792SP - 5 2026-04-13

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-13 N792SP - Apr 13, 23:20 UTCApr 13, 23:40 UTC20m
2026-04-13 N792SP MRI → MRI Apr 13, 20:40 UTCApr 13, 21:40 UTC1h 0m
2026-04-13 N792SP - Apr 13, 18:20 UTCApr 13, 19:30 UTC1h 10m
2026-04-13 N792SP - Apr 13, 16:15 UTCApr 13, 17:00 UTC45m
2026-04-13 N792SP - Apr 13, 15:55 UTCApr 13, 16:15 UTC20m

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 N792SP page for operator, model, and routing details .

Mode-S AAC111 frequently asked

What is Mode-S code AAC111?
AAC111 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N792SP.
Where is Mode-S AAC111 registered?
Mode-S code AAC111 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 AAC111 broadcasting right now?
No active broadcast right now. Last signal was 23h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAC111, octal 52540421, decimal 11,190,545.
What flights does AAC111 operate?
Mode-S AAC111 has broadcast 1 distinct callsign, including N792SP.