sensors Mode-S transponder

A18ECB

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N2RC · CESSNA 560 Citation Ultra · operated by RICO MARKETING CORP

Hex
A18ECB
Octal
50307313
Decimal
10,587,851
Country
US
Tail
N2RC
Type
C560
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 A18ECB.

Country allocation

The ICAO 24-bit address A18ECB 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
N2RC - 5 2026-04-13

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-13 N2RC - Apr 13, 19:50 UTCApr 13, 20:45 UTC55m
2026-04-13 N2RC - Apr 13, 17:40 UTCApr 13, 20:10 UTC2h 30m
2026-04-13 N2RC - Apr 13, 16:15 UTCApr 13, 16:55 UTC40m
2026-04-13 N2RC - Apr 13, 15:50 UTCApr 13, 16:55 UTC1h 5m
2026-04-13 N2RC - Apr 13, 13:55 UTCApr 13, 16:15 UTC2h 20m

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 N2RC page for operator, model, and routing details .

Mode-S A18ECB frequently asked

What is Mode-S code A18ECB?
A18ECB is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N2RC.
Where is Mode-S A18ECB registered?
Mode-S code A18ECB 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 A18ECB 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 A18ECB, octal 50307313, decimal 10,587,851.
What flights does A18ECB operate?
Mode-S A18ECB has broadcast 1 distinct callsign, including N2RC.