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Registered aircraft · FAA record as of September 25, 2026
N309ST

William S Welder MTO SPORT

Valid Texas

N309ST is a William S Welder MTO SPORT, a rotorcraft with a four-stroke engine (a helicopter or multicopter), built in 2015. It has 2 seats. It is registered to an individual in Port Aransas, Texas. The registration is valid: it was issued on August 3, 2015 and expires on August 31, 2028. It holds an experimental airworthiness certificate for amateur built, dated August 18, 2015.

Aircraft

Maker
William S Welder
Model
MTO SPORT
Serial number
M01267
Type
Rotorcraft
Power
Four-cycle piston, 1 motor · Rotax 912ULS SERIES · 100 hp
Seats
2
Year built
2015
Kit
AUTOGYRO GMBH MTO SPORT
Transponder code
A34263 (octal 50641143)

Registration

Status
Valid registration
Certificate issued
August 3, 2015
Expires
August 31, 2028
Last FAA action
June 3, 2023
Airworthiness
Experimental · Amateur built · August 18, 2015
FAA region
Southwestern
FAA record id
01187380

Owner as the FAA publishes it

Name
Welder William Smith
Type
Individual
Address
639 E Avenue B
Port Aransas, TX 78373-5201

Owners can ask the FAA to withhold their name and address from public files. When they do, those fields are blank here as well. How that works.

Documents on file 0

No bills of sale, loans or other documents are indexed against this tail number.

Source: FAA Civil Aviation Registry, Releasable Aircraft Database, September 25, 2026. See this record on the FAA site · This record as data