Single-engine piston

N18CH

1974 Homebuilt Thorp T-18

Registered 1 NTSB/FAA record
Built
1974
Serial
CH374
Class
Single-engine piston
Engines
Lycoming O&VO-360 series
Status
Current as of October 2026
Registered owner
Individual · sign in to see
Based
Oakdale, MN
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Registration record

N18CH on the FAA register

Type
1974 Homebuilt Thorp T-18
Serial
CH374
Engines
Lycoming O&VO-360 series
Registered owner
Individual — the name of an individual registrant is shown to signed-in users. Sign in
Oakdale, MN
Certificate issued
1998-09-29
Airworthiness date
1979-12-05
Registration expires
2028-04-30
Airworthiness class
Experimental · amateur-built
Mode S (hex)
A13E8D
Mode S (octal)
50237215
Seats (type)
1
Weight class
up to 12,499 lb
Status
Current as of October 2026
Registry history

Timeline

  • 2028-04-30
    Registration expires (renewal due).
  • 2025-07-06
    Accident at Lake Elmo, MN; damage: substantial.
  • 1998-09-29
    Certificate of registration issued as N18CH.
  • 1979-12-05
    Airworthiness date on the current FAA record (experimental category (amateur-built)).
  • 1974
    Manufactured (1974).
Overview

About N18CH

N18CH is a 1974 Homebuilt Thorp T-18, serial number CH374. It is registered to an individual in Oakdale, Minnesota. The current certificate of registration was issued on September 29, 1998 and expires on April 30, 2028.

The FAA aircraft reference file describes the type as a single-engine piston, one Lycoming O&VO-360 series engine and 1 seats. Its airworthiness certificate is experimental category (amateur-built), dated December 5, 1979.

N18CH has 1 accident/incident record on file (most serious damage: substantial); details are below.

Safety record

Accident & incident history

2025-07-06 Accident · Lake Elmo, MN Damage: Substantial NTSB · CEN25LA246
Reported aircraft: Thorp T18
Probable cause: The pilot s failure to maintain obstacle clearance during the go-around, that resulted in the tailwheel impacting a taxiway sign, a subsequent loss of control due to the damaged tailwheel, and a runway excursion during the landing.
NTSB report ↗

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 Minnesota· 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.