Piston helicopter

N4446S

Homebuilt AG-915 Centurion

Registered No accidents on file
Built
—
Serial
AGML004-915C
Class
Piston helicopter
Engines
Rotax 915 ISC3 A
Status
Current as of October 2026
Registered owner
Rotor Adventures LLC (LLC)
Based
Escondido, CA
Registration record

N4446S on the FAA register

Type
Homebuilt AG-915 Centurion
Serial
AGML004-915C
Engines
Rotax 915 ISC3 A
Registered owner
Rotor Adventures LLC
Escondido, CA
Certificate issued
2025-05-16
Airworthiness date
2021-09-07
Registration expires
2032-05-31
Airworthiness class
Experimental · amateur-built
Mode S (hex)
A55CB4
Mode S (octal)
51256264
Seats (type)
2
Weight class
up to 12,499 lb
Kit
Airgyro Aviation Llc AG-915 CENTURION
Status
Current as of October 2026
Registry history

Timeline

  • 2032-05-31
    Registration expires (renewal due).
  • 2025-05-16
    Certificate of registration issued as N4446S to the current registrant.
  • 2021-09-07
    Airworthiness date on the current FAA record (experimental category (amateur-built)).
  • 2015-08-17
    N4446S previously assigned to a Cessna 152 (s/n 15285684); cancelled.
Overview

About N4446S

N4446S is a Homebuilt AG-915 Centurion, serial number AGML004-915C. The FAA register lists Rotor Adventures LLC as the registrant in Escondido, California. The current certificate of registration was issued on May 16, 2025 and expires on May 31, 2032.

The FAA aircraft reference file describes the type as a piston helicopter, one Rotax 915 ISC3 A engine and 2 seats. Its airworthiness certificate is experimental category (amateur-built), dated September 7, 2021.

No NTSB accident or incident reports and no FAA preliminary notices are on file for N4446S.

Safety record

Accident & incident history

✓ No NTSB accident or incident reports and no FAA preliminary notices on file for N4446S.

Sources: NTSB aviation accident database and CAROL case system, FAA preliminary accident & incident notices. Search accident records

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Browse: Aircraft registered in California· Registry by state· FAA registry stats

Data: FAA Aircraft Registry (October 2026), including deregistered aircraft; NTSB and FAA accident data; fyiAero listing history. Individual owners' names are shown to signed-in users and street addresses are never shown. Type figures are published specifications, not this aircraft's.