sensors Mode-S transponder

A6CCE2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N53703 · CESSNA 172 Skyhawk · operated by UNIVERSITY OF MICHIGAN FLYERS INC

Hex
A6CCE2
Octal
51546342
Decimal
10,931,426
Country
US
Tail
N53703
Type
C172
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 A6CCE2.

Country allocation

The ICAO 24-bit address A6CCE2 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
N53703 - 5 2026-04-13

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-13 N53703 ARB → ARB Apr 13, 20:35 UTCApr 13, 22:15 UTC1h 40m
2026-04-13 N53703 - Apr 13, 17:30 UTCApr 13, 19:15 UTC1h 45m
2026-04-13 N53703 - Apr 13, 16:15 UTCApr 13, 16:40 UTC25m
2026-04-13 N53703 - Apr 13, 15:50 UTCApr 13, 16:40 UTC50m
2026-04-13 N53703 - Apr 13, 15:05 UTCApr 13, 16:15 UTC1h 10m

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 N53703 page for operator, model, and routing details .

Mode-S A6CCE2 frequently asked

What is Mode-S code A6CCE2?
A6CCE2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N53703.
Where is Mode-S A6CCE2 registered?
Mode-S code A6CCE2 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 A6CCE2 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 A6CCE2, octal 51546342, decimal 10,931,426.
What flights does A6CCE2 operate?
Mode-S A6CCE2 has broadcast 1 distinct callsign, including N53703.