Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AE634C

ICAO 24-bit transponder address

Currently assigned to 21-72468 · AIRBUS HELICOPTERS EC-145

Hex
AE634C
Octal
53461514
Decimal
11,428,684
Tail
21-72468
Type
EC45
No current signal · last broadcast 1d ago
Flights observed
2
Distinct callsigns
1
Country
-
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AE634C.

Callsign history 1 distinct

Callsign Airline Flights Last seen
G72468 - 2 2026-04-13

Recent flights last 2

DateFlightRouteTakeoffLandingDuration
2026-04-13 G72468 - Apr 13, 21:45 UTCApr 13, 22:15 UTC30m
2026-04-13 G72468 - Apr 13, 20:25 UTCApr 13, 20:45 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 21-72468 page for operator, model, and routing details .

Mode-S AE634C frequently asked

What is Mode-S code AE634C?
AE634C is an ICAO 24-bit transponder address. Assigned to 21-72468.
Is AE634C 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 AE634C, octal 53461514, decimal 11,428,684.
What flights does AE634C operate?
Mode-S AE634C has broadcast 1 distinct callsign, including G72468.