Single-engine piston

N422ES

Homebuilt Stol CH 701

Registered 1 NTSB/FAA record
Built
—
Serial
7200
Class
Single-engine piston
Engines
Viking 110
Status
Current as of October 2026
Registered owner
Individual · sign in to see
Based
Walnut Creek, CA
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Registration record

N422ES on the FAA register

Type
Homebuilt Stol CH 701
Serial
7200
Engines
Viking 110
Registered owner
Individual — the name of an individual registrant is shown to signed-in users. Sign in
Walnut Creek, CA
Certificate issued
2025-07-23
Airworthiness date
2010-09-29
Registration expires
2032-07-31
Airworthiness class
Experimental · amateur-built
Mode S (hex)
A50382
Mode S (octal)
51201602
Seats (type)
2
Weight class
up to 12,499 lb
Kit
Zenith Acft Co STOL CH 701
Status
Current as of October 2026
Registry history

Timeline

  • 2032-07-31
    Registration expires (renewal due).
  • 2025-07-23
    Certificate of registration issued as N422ES.
  • 2017-07-15
    Accident at Kenwood, CA; damage: substantial.
  • 2010-09-29
    Airworthiness date on the current FAA record (experimental category (amateur-built)).
Overview

About N422ES

N422ES is a Homebuilt Stol CH 701, serial number 7200. It is registered to an individual in Walnut Creek, California. The current certificate of registration was issued on July 23, 2025 and expires on July 31, 2032.

The FAA aircraft reference file describes the type as a single-engine piston, one Viking 110 engine and 2 seats. Its airworthiness certificate is experimental category (amateur-built), dated September 29, 2010.

N422ES has 1 accident/incident record on file (most serious damage: substantial); details are below.

Safety record

Accident & incident history

2017-07-15 Accident · Kenwood, CA Damage: Substantial NTSB · WPR17LA156
Reported aircraft: Simmons Gary F Stol CH 701
Probable cause: Failure of the flywheel drive assembly, which resulted in a loss of engine power and subsequent forced landing to uneven terrain.

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.