N121GK - 2003 Kurtz Garold RV4 Aircraft Registration

RV4

2003 KURTZ GAROLD RV4

Aircraft Description

N121GK is a 2003 Kurtz Garold RV4, a single-engine reciprocating (piston) aircraft registered to Book Thomas D in Loveland, CO. This aircraft holds a experimental airworthiness certificate issued by the Federal Aviation Administration on March 12, 2003. The registration certificate was issued on August 19, 2021. The registration is set to expire on August 31, 2028. Powered by a Lycoming IO-360-L2A engine producing 180 horsepower, N121GK is. The aircraft's Mode S transponder code is A05809 (hex), used for ADS-B identification and flight tracking. N121GK was last tracked by AviatorDB at coordinates 40.2495, -105.1731 on February 4, 2026. The FAA registry record for N121GK was last updated on June 3, 2023. AviatorDB monitors aircraft positions through ADS-B surveillance data and updates records as new position data is received.

Kurtz Garold is an aircraft manufacturer with aircraft registered in the FAA database tracked by AviatorDB. AviatorDB tracks 1 Kurtz Garold aircraft currently registered in the FAA database, including the RV4 model.

AviatorDB has found no NTSB accident or incident reports involving N121GK. AviatorDB cross-references all FAA registration data with NTSB accident and incident reports, providing a comprehensive safety overview for every registered aircraft in the United States.

Model Year
2003
Manufacturer
KURTZ GAROLD
Model
RV4
Type Aircraft
Fixed Wing Single Engine
ICAO Type Code
RV4RV-4
Weight Class
Up to 12,500 lbs
Airworthiness Date
March 12, 2003
Classification
Experimental 2 Category
Type Registration
Individual
Status
Valid Registration
Cert Issue Date
August 19, 2021

Registered Owner

Name
BOOK THOMAS D
Address
2908 PRONGHORN CT
City
LOVELAND
State / Zip Code
Colorado80537-9068
Country
United States

Powerplant & Avionics

Engine Type
Reciprocating
Number of Engines
1
Engine Manufacturer
LYCOMING
Engine Model
IO-360-L2A
Horsepower
180 HP
Mode S Code (Oct)
50054011
Mode S Code (Hex)
A05809

Additional Details

Registration
N121GK
Serial Number
2767
Number of Engines
1
Number of Seats
2
Expiration Date
August 31, 2028
Last Action Date
June 3, 2023
Last Update Date
January 19, 2026
Unique ID
00031659

Last Known Position

Date
February 4, 2026 (UTC 22:39:00)
Airport
Latitude
40.249466
Longitude
-105.173096

Data Source

Data provided by the US Federal Aviation Administration. View on FAA.gov

Last updated: 2026-04-01 01:32:20 UTC