N4257S

1976 Beech A36

Fixed-wing, single engine · serial E-939

Valid registration

Registered with the FAA until Jul 31, 2028.

Registered owner

T&s Proch Investments LLC

Owner type: LLC
Address: 24406 E 267th St, Harrisonville, MO 64701

Aircraft

Make and model: Beech A36
Year built: 1976
Serial number: E-939
Type: Fixed-wing, single engine · Land
Engines: 1 × Piston · Cont Motor IO 520 SERIES · 285 hp
Seats: 6
Weight class: Up to 12,499 lb
Certification: Type certificated · Standard airworthiness (issued Oct 20, 1976)
Mode S code: A51190 (the transponder's ICAO address, used by ADS-B flight trackers)
Registered since: Jul 14, 2021 · last FAA action Oct 6, 2025

What a Beechcraft Bonanza looks likePhoto of a Beechcraft Bonanza, not this aircraft: Bill Larkins, CC BY-SA 2.0, 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 A51190: 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.