sensors Mode-S transponder

A0CCD2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N1502E · CESSNA 172 Skyhawk · operated by ELIZBETH CITY STATE UNIVERSITY

Hex
A0CCD2
Octal
50146322
Decimal
10,538,194
Country
US
Tail
N1502E
Type
C172
No current signal · last broadcast 1d ago
Flights observed
3
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A0CCD2.

Country allocation

The ICAO 24-bit address A0CCD2 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
N1502E - 3 2026-04-13

Recent flights last 3

DateFlightRouteTakeoffLandingDuration
2026-04-13 N1502E ECG → ECG Apr 13, 20:15 UTCApr 13, 21:35 UTC1h 20m
2026-04-13 N1502E ECG → ECG Apr 13, 16:50 UTCApr 13, 17:25 UTC35m
2026-04-13 N1502E ECG → ECG Apr 13, 12:40 UTCApr 13, 13:30 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 N1502E page for operator, model, and routing details .

Mode-S A0CCD2 frequently asked

What is Mode-S code A0CCD2?
A0CCD2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N1502E.
Where is Mode-S A0CCD2 registered?
Mode-S code A0CCD2 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 A0CCD2 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 A0CCD2, octal 50146322, decimal 10,538,194.
What flights does A0CCD2 operate?
Mode-S A0CCD2 has broadcast 1 distinct callsign, including N1502E.