N444MA - 2002 Underwood Harold Thorp S-18 Aircraft Registration

2002 UNDERWOOD HAROLD THORP S-18

Aircraft Description

N444MA is a Underwood Harold THORP S-18, a single-engine reciprocating (piston) aircraft registered to First Order Aeronautics LLC in Lees Summit, MO. The registration certificate was issued on March 8, 2022. The registration is set to expire on March 31, 2029. The aircraft is configured with 2 seats. The aircraft's Mode S transponder code is A55A8D (hex), used for ADS-B identification and flight tracking. N444MA was last tracked by AviatorDB at coordinates 39.0098, -94.4733 on March 17, 2026. The FAA registry record for N444MA was last updated on July 22, 2023. AviatorDB monitors aircraft positions through ADS-B surveillance data and updates records as new position data is received.

The Elmwood CA-05 Christavia Mk1 is a homebuilt two-seat tandem aircraft designed for amateur construction rather than commercial production. First flown on October 3, 1981, it features a high-wing configuration with traditional steel tube fuselage and fabric-covered wooden wings, typically powered by Continental O-200 engines. The aircraft measures over 64 feet in overall length and was developed by Ron Sands of Elmwood Aviation originally as a missionary aircraft, though it found its primary application among homebuilders. AviatorDB tracks 1 Underwood Harold aircraft currently registered in the FAA database. The ICAO type designator for this aircraft model is CHR1.

AviatorDB has found no NTSB accident or incident reports involving N444MA. 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
2002
Manufacturer
UNDERWOOD HAROLD
Model
THORP S-18
Type Aircraft
Fixed Wing Single Engine
Weight Class
Up to 12,500 lbs
Airworthiness Date
April 14, 2026
Classification
Experimental 2 Category
Type Registration
LLC
Status
Valid Registration
Cert Issue Date
March 8, 2022

Registered Owner

Name
FIRST ORDER AERONAUTICS LLC
Address
2505 SW WINTEROAK CIR
City
LEES SUMMIT
State / Zip Code
Missouri64081-2577
Country
United States

Powerplant & Avionics

Engine Type
Reciprocating
Number of Engines
1
Engine Manufacturer
LYCOMING
Engine Model
IO-360-B1B
Horsepower
180 HP
Mode S Code (Oct)
51255215
Mode S Code (Hex)
A55A8D

Additional Details

Registration
N444MA
Serial Number
1HU
Number of Engines
1
Number of Seats
2
Expiration Date
March 31, 2029
Last Action Date
July 22, 2023
Last Update Date
January 19, 2026
Unique ID
00024919

Last Known Position

Date
May 13, 2026 (UTC 23:59:59)
Airport
Latitude
37.601898
Longitude
-93.015455

Data Source

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

Last updated: 2026-06-15 01:32:20 UTC