Single-engine piston

N21WW

2025 Homebuilt Stol CH 750SD

Registered No accidents on file
Built
2025
Serial
75-11712
Class
Single-engine piston
Engines
Lycoming YIO-390EXP289
Status
Current as of October 2026
Registered owner
Individual · sign in to see
Based
Saint George, UT
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Registration record

N21WW on the FAA register

Type
2025 Homebuilt Stol CH 750SD
Serial
75-11712
Engines
Lycoming YIO-390EXP289
Registered owner
Individual — the name of an individual registrant is shown to signed-in users. Sign in
Saint George, UT
Certificate issued
2025-05-20
Airworthiness date
2025-07-02
Registration expires
2032-05-31
Airworthiness class
Experimental · amateur-built
Mode S (hex)
A1B932
Mode S (octal)
50334462
Seats (type)
3
Weight class
up to 12,499 lb
Kit
Zenith Aircraft Co STOL CH 750 SD
Status
Current as of October 2026
Registry history

Timeline

  • 2032-05-31
    Registration expires (renewal due).
  • 2025-07-02
    Airworthiness date on the current FAA record (experimental category (amateur-built)).
  • 2025-05-20
    Certificate of registration issued as N21WW to the current registrant.
  • 2017-09-15
    N21WW previously assigned to a Piper Turbo Aztec F / Turbo Aztec E / Aztec B (s/n 27-7554066); cancelled.
Overview

About N21WW

N21WW is a 2025 Homebuilt Stol CH 750SD, serial number 75-11712. It is registered to an individual in Saint George, Utah. The current certificate of registration was issued on May 20, 2025 and expires on May 31, 2032.

The FAA aircraft reference file describes the type as a single-engine piston, one Lycoming YIO-390EXP289 engine and 3 seats. Its airworthiness certificate is experimental category (amateur-built), dated July 2, 2025.

No NTSB accident or incident reports and no FAA preliminary notices are on file for this airframe as N21WW. 1 earlier record involves a different aircraft that carried the same N-number.

Safety record

Accident & incident history

2017-06-03 Accident · San Juan, PR Damage: Destroyed Fatal injury NTSB · ERA17FA195
Reported aircraft: Piper PA23 — a different aircraft that carried the N21WW registration before this airframe.
Probable cause: The pilot's failure to maintain adequate airspeed, properly correct for left yaw, and his exceedance of the airplane's critical angle of attack during initial climb, which resulted in an aerodynamic stall and subsequent uncontrolled descent into water.

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 Utah· 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.