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
N406MM

Williams MM-1

Valid Nevada

N406MM is a Williams MM-1, a fixed-wing airplane with one motor with a piston engine, built in 1971. It has 1 seat. It is registered to an individual in Yerington, Nevada. The registration is valid: it was issued on February 21, 2024 and expires on February 28, 2031. It holds an experimental airworthiness certificate for amateur built, dated November 10, 1975.

Aircraft

Maker
Williams
Model
MM-1
Serial number
559
Type
Fixed-wing, single engine
Power
Piston (reciprocating), 1 motor · Cont Motor C85 SERIES · 85 hp
Seats
1
Year built
1971
Cruising speed
112 mph
Transponder code
A4C40A (octal 51142012)

Registration

Status
Valid registration
Certificate issued
February 21, 2024
Expires
February 28, 2031
Last FAA action
February 22, 2024
Airworthiness
Experimental · Amateur built · November 10, 1975
FAA region
Western-Pacific
FAA record id
00842377

Owner as the FAA publishes it

Name
Dean David E
Type
Individual
Address
2 Nordyke Rd
Yerington, NV 89447-9503

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