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Who Owns This Plane?

N3984N

1968 Mooney M20C

Fixed-wing, single engine · serial 680012

Valid registration

Registered with the FAA until Oct 31, 2027.

Registered owner

Spencer Aviation Inc

Owner type: Corporation
Address: 1025 Pittsburgh Dr, Delaware, OH 43015
Fleet: 4 aircraft registered to this owner

Aircraft

Make and model: Mooney M20C
Year built: 1968
Serial number: 680012
Type: Fixed-wing, single engine · Land
Engines: 1 × Piston · Lycoming O&VO-360 SER · 180 hp
Seats: 4
Weight class: Up to 12,499 lb
Certification: Type certificated · Standard airworthiness (issued Jan 26, 1968)
Mode S code: A4A372 (the transponder's ICAO address, used by ADS-B flight trackers)
Registered since: Oct 14, 2020 · last FAA action Mar 24, 2023

Past registrations of N3984N

N-numbers are reused. Each line is an earlier registration, ending on the date the FAA canceled it.

Aug 18, 1955 1947 Beech 35 · serial D-808 Boland Planting Co Et Al · Estill, MS

What a Mooney M20 looks likePhoto of a Mooney M20, not this aircraft: Arpingstone, Public domain, via Wikimedia Commons

Check the official record

This page mirrors the FAA's public registry file dated Oct 30, 2026. The FAA's own N-number inquiry is the official record, with the full owner address and documents.

Where is it now?

The registry doesn't show where an aircraft is flying. Flight trackers do, by tail number or Mode S code A4A372: FlightAware or ADS-B Exchange. Some owners block tracking through the FAA's privacy programs.

Something wrong?

Owners update their registration with the FAA Aircraft Registry; changes appear here the day after the FAA publishes them. Email admin@whoownsthisplane.com about how this site shows a record.