Single-engine piston

N633GG

1985 Homebuilt Thorp T-18

Registered 1 NTSB/FAA record
Built
1985
Serial
1098
Class
Single-engine piston
Engines
Lycoming O-320 series
Status
Current as of October 2026
Registered owner
Co-owned · sign in to see
Based
Tehachapi, CA
Registration record

N633GG on the FAA register

Type
1985 Homebuilt Thorp T-18
Serial
1098
Engines
Lycoming O-320 series
Registered owner
Co-owned — the name of an individual registrant is shown to signed-in users. Sign in
Tehachapi, CA
Certificate issued
2008-04-16
Airworthiness date
1985-07-12
Registration expires
2030-03-31
Airworthiness class
Experimental · amateur-built
Mode S (hex)
A8497E
Mode S (octal)
52044576
Seats (type)
2
Weight class
up to 12,499 lb
Status
Current as of October 2026
Registry history

Timeline

  • 2030-03-31
    Registration expires (renewal due).
  • 2008-04-16
    Certificate of registration issued as N633GG.
  • 1985-07-26
    Accident at Alamosa, CO; damage: substantial.
  • 1985-07-12
    Airworthiness date on the current FAA record (experimental category (amateur-built)).
Overview

About N633GG

N633GG is a 1985 Homebuilt Thorp T-18, serial number 1098. It is registered to co-owners in Tehachapi, California. The current certificate of registration was issued on April 16, 2008 and expires on March 31, 2030.

The FAA aircraft reference file describes the type as a single-engine piston, one Lycoming O-320 series engine and 2 seats. Its airworthiness certificate is experimental category (amateur-built), dated July 12, 1985.

N633GG has 1 accident/incident record on file (most serious damage: substantial); details are below.

Safety record

Accident & incident history

1985-07-26 Accident · Alamosa, CO Damage: Substantial Minor injury NTSB · DEN85LTE05
Reported aircraft: Gordon Thorpe T-18

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

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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.