Staging copy. The live site is at https://staging.data.eflight.com.
eFlight RegistryFAA data, updated daily
Registered aircraft · FAA record as of September 25, 2026
N21TS

Stirling Fred KITFOX

Valid Montana

N21TS is a Stirling Fred KITFOX, a fixed-wing airplane with one motor with a piston engine. It has 2 seats. It is registered to an individual in West Yellowstone, Montana. The registration is valid: it was issued on July 9, 2020 and expires on July 31, 2027. It holds an experimental airworthiness certificate for amateur built, dated July 22, 1988.

Aircraft

Maker
Stirling Fred
Model
KITFOX
Serial number
178
Type
Fixed-wing, single engine
Power
Piston (reciprocating), 1 motor · Bombardier ROTAX (ALL)
Seats
2
Year built
Not given
Transponder code
A1B8E3 (octal 50334343)

Registration

Status
Valid registration
Certificate issued
July 9, 2020
Expires
July 31, 2027
Last FAA action
March 4, 2023
Airworthiness
Experimental · Amateur built · July 22, 1988
FAA region
Northwest Mountain
FAA record id
00944211

Owner as the FAA publishes it

Name
Stubblefield Matthew K
Type
Individual
Address
PO Box 2136
West Yellowstone, MT 59758-2136

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