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
N9SN

Allen William S SONEX

Valid Kentucky

N9SN is an Allen William S SONEX, a fixed-wing airplane with one motor with a piston engine, built in 2016. It has 2 seats. It is registered to an individual in Louisville, Kentucky. 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 June 28, 2016.

Aircraft

Maker
Allen William S
Model
SONEX
Serial number
1359
Type
Fixed-wing, single engine
Power
Piston (reciprocating), 1 motor · Greatplain GREATPLAIN VW · 100 hp
Seats
2
Year built
2016
Kit
SONEX AIRCRAFT LLC SONEX
Transponder code
AC6C17 (octal 53066027)

Registration

Status
Valid registration
Certificate issued
August 3, 2015
Expires
August 31, 2028
Last FAA action
June 3, 2023
Airworthiness
Experimental · Amateur built · June 28, 2016
FAA region
Central
FAA record id
01187337

Owner as the FAA publishes it

Name
Allen William S
Type
Individual
Address
9806 Sheplet Ct
Louisville, KY 40241-2129

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