N421QS

2008 Gulfstream Aerospace GIV-X (G450)

Fixed-wing, multi-engine · serial 4114

Valid registration

Registered with the FAA until Jul 31, 2027.

Aircraft

Make and model: Gulfstream Aerospace GIV-X (G450)
Year built: 2008
Serial number: 4114
Type: Fixed-wing, multi-engine · Land
Engines: 2 × Turbofan · Rolls-Royc TAY 611-8C · 13,850 lb thrust
Seats: 22
Weight class: 20,000 lb and over
Certification: Type certificated · Standard airworthiness (issued Feb 18, 2008)
Mode S code: A500C5 (the transponder's ICAO address, used by ADS-B flight trackers)
Registered since: Jul 30, 2020 · last FAA action Mar 4, 2023

What a Gulfstream IV looks likePhoto of a Gulfstream IV, not this aircraft: NOAA; http://www.photolib.noaa.gov/aboutc.html, 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 A500C5: FlightAware or ADS-B Exchange. Some owners block tracking through the FAA's privacy programs.

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