N421QS - 2008 Gulfstream Aerospace Giv-x (G450) Aircraft Registration

N421QS is a 2008 Gulfstream Aerospace GIV-X (G450), a twin-engine turbo-fan aircraft registered in the United States. This aircraft holds a standard airworthiness certificate issued by the Federal Aviation Administration on February 18, 2008. The registration certificate was issued on July 30, 2020. The registration is set to expire on July 31, 2027. Powered by a Rolls-royc TAY 611-8C engine producing 13850 pounds of thrust, N421QS is. The aircraft's Mode S transponder code is A500C5 (hex), used for ADS-B identification and flight tracking. N421QS was last tracked by AviatorDB near Austin Bergstrom International Airport (KAUS) on March 24, 2026. The FAA registry record for N421QS was last updated on March 4, 2023. AviatorDB monitors aircraft positions through ADS-B surveillance data and updates records as new position data is received.

The Gulfstream GIV SP, a special performance variant that established the ultra-long-range business jet segment, first flew in 1985 as part of Gulfstream's revolutionary GIV program. This low-wing twin-engine business jet could accommodate 12-19 passengers in executive configurations with its spacious 85-foot-long fuselage and 77-foot-10-inch wingspan. Powered by two Rolls-Royce Tay Mk 611-8 turbofan engines producing 12,420 pounds of thrust each, the GIV SP achieved a maximum range of 6,800 nautical miles at Mach 0.85. Manufactured by Gulfstream Aerospace Corporation in Savannah, Georgia. AviatorDB tracks 1,226 Gulfstream Aerospace aircraft currently registered in the FAA database. The ICAO type designator for this aircraft model is GLF4.

AviatorDB has found no NTSB accident or incident reports involving N421QS. AviatorDB cross-references all FAA registration data with NTSB accident and incident reports, providing a comprehensive safety overview for every registered aircraft in the United States.