Electric rotorcraft

N121ST

Hylio AG 230

Registered No accidents on file
Built
—
Serial
17906100252
Class
Electric rotorcraft
Engines
8
Status
Current as of October 2026
Registered owner
Individual · sign in to see
Based
Lenox, IA
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Registration record

N121ST on the FAA register

Type
Hylio AG 230
Serial
17906100252
Engines
8
Registered owner
Individual — the name of an individual registrant is shown to signed-in users. Sign in
Lenox, IA
Certificate issued
2025-05-02
Airworthiness date
—
Registration expires
2032-05-31
Airworthiness class
—
Mode S (hex)
A0590B
Mode S (octal)
50054413
Weight class
up to 12,499 lb
Status
Current as of October 2026
Registry history

Timeline

  • 2032-05-31
    Registration expires (renewal due).
  • 2025-05-02
    Certificate of registration issued as N121ST to the current registrant.
  • 2015-05-13
    N121ST previously assigned to a Homebuilt Advcd Avia Buccnr SX (s/n BUC.SX.0027); cancelled.
  • 1992-02-27
    N121ST previously assigned to a Homebuilt Glasair III (s/n 3157); cancelled.
Overview

About N121ST

N121ST is a Hylio AG 230, serial number 17906100252. It is registered to an individual in Lenox, Iowa. The current certificate of registration was issued on May 2, 2025 and expires on May 31, 2032.

The FAA aircraft reference file describes the type as an electric rotorcraft.

No NTSB accident or incident reports and no FAA preliminary notices are on file for this airframe as N121ST. 1 earlier record involves a different aircraft that carried the same N-number.

Safety record

Accident & incident history

1991-10-27 Accident · Scottsdale, AZ Damage: Destroyed Fatal injury NTSB · LAX92LA026
Reported aircraft: Glassair III — a different aircraft that carried the N121ST registration before this airframe.
Probable cause: THE CERTIFIED FLIGHT INSTRUCTORS DECISION TO FLY INTO KNOWN FORECAST WEATHER CONDITIONS SPECIFICALLY PROHIBITED BY THE AIRPLANE'S OWNER'S MANUAL AND DECISION TO ALLOW AN UNQUALIFIED PILOT WITH LIMITED INSTRUMENT FLIGHT EXPERIENCE TO OCCUPY THE LEFT SEAT BEHIND THE FLIGHT INSTRUMENTS WHICH SUBSEQUENTLY RESULTED IN A INFLIGHT LOSS OF CONTROL. CONTRIBUTING TO THE ACCIDENT WAS THE CERTIFIED FLIGHT INSTRUCTOR'S INADEQUATE SUPERVISION OF THE UNQUALIFIED PILOT.

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

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More from Hylio

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Browse: Hylio aircraft for sale· Aircraft registered in Iowa· 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.