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
N531X

Foster Dudley B ONEX

N531X is a Foster Dudley B ONEX, a fixed-wing airplane with one motor with a piston engine, built in 2014. It has 1 seat. It is registered to an individual in East Falmouth, Massachusetts. The registration is valid: it was issued on January 13, 2014 and expires on January 31, 2030. It holds an experimental airworthiness certificate for amateur built, dated February 22, 2014.

Aircraft

Maker
Foster Dudley B
Model
ONEX
Serial number
ONX0054
Type
Fixed-wing, single engine
Power
Piston (reciprocating), 1 motor · Aerovee 2.1 · 80 hp
Seats
1
Year built
2014
Kit
SONEX AIRCRAFT LLC ONEX
Transponder code
A6B631 (octal 51533061)

Registration

Status
Valid registration
Certificate issued
January 13, 2014
Expires
January 31, 2030
Last FAA action
September 30, 2023
Airworthiness
Experimental · Amateur built · February 22, 2014
FAA region
New England
FAA record id
01139980

Owner as the FAA publishes it

Name
Foster Dudley B
Type
Individual
Address
19 Joshua Ln
East Falmouth, MA 02536-5483

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