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Who Owns This Plane?

N37281

2003 Boeing 737-824

Fixed-wing, multi-engine · serial 31599

Valid registration

Registered with the FAA until Jan 31, 2029.

Registered owner

United Airlines Inc

Owner type: Corporation
Address: Attn: Treasurer Willis Tower 233 S Wacker Dr, Chicago, IL 60606
Fleet: 1,220 aircraft registered to this owner

Aircraft

Make and model: Boeing 737-824
Year built: 2003
Serial number: 31599
Type: Fixed-wing, multi-engine · Land
Engines: 2 × Turbofan · CFM Intl. CFM56 SERIES · 2,200 hp
Seats: 149
Weight class: 20,000 lb and over
Certification: Type certificated · Standard airworthiness (issued Dec 18, 2003)
Mode S code: A43EC3 (the transponder's ICAO address, used by ADS-B flight trackers)
Registered since: Dec 22, 2003 · last FAA action Jul 7, 2023

Past registrations of N37281

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

Sep 15, 1949 Interstate S-1A · serial 124 W L Hixon · Tempe, AZ

What a Boeing 737 Next Generation looks likePhoto of a Boeing 737 Next Generation, not this aircraft: 4300streetcar, CC BY 4.0, 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 A43EC3: 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.