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Who Owns This Plane?

N23NE

Learjet Inc 45

Fixed-wing, multi-engine · serial 539

Valid registration

Registered with the FAA until Jan 31, 2029.

Registered owner

Northwestern Corp dba

Owner type: Corporation
Address: 3010 W 69th St, Sioux Falls, SD 57108
Also named: Northwestern Energy

Aircraft

Make and model: Learjet Inc 45
Year built: —
Serial number: 539
Type: Fixed-wing, multi-engine · Land
Engines: 2 × Turbofan
Seats: 12
Weight class: 20,000 lb and over
Certification: Type certificated
Mode S code: A20758 (the transponder's ICAO address, used by ADS-B flight trackers)
Registered since: Jan 9, 2019 · last FAA action Jan 14, 2025

Past registrations of N23NE

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

Mar 17, 2011 Cameron Balloons D-50 · serial 768

What a Learjet 45 looks likePhoto of a Learjet 45, not this aircraft: Laurent ERRERA from L'Union, France, 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 A20758: 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.