N521SB

This entry covers Gulfstream airframe N521SB, a Gulfstream GV-SP (G550) manufactured by Gulfstream Aerospace Corporation and built in 2008 with manufacturer serial 5199. The airframe is recorded as owned by corporate trustee BANK OF UTAH TRUSTEE of Salt Lake City, UT, US, and is registered in the US registry. Listed ownership under a corporate trustee and US registration indicate a finance- or asset-management ownership structure rather than direct operator possession. The airframe carries an estimated market value of $16,000,000 and is configured and maintained in line with typical executive Gulfstream standards for the model.

The cabin on this specific airframe is reported as a typical executive layout accommodating 14–18 passengers, though the exact configuration is not published; overall seating capacity is listed as 20. Avionics are fitted with Gulfstream PlaneView, supporting advanced flight management and common type operations across Gulfstream fleets. Typical mission profiles for this airframe combine long-range intercontinental flights up to 6,750 nm with high-speed cruise at about 459 kts and cruise altitudes approaching 51,000 ft, making it suitable for owner/operator or fractional use. Based in Salt Lake City by ownership record, maintenance considerations follow Rolls-Royce BR700 engine programs and Gulfstream airframe service intervals consistent with corporate-trust ownership structures.

The GV-SP (G550) fits the long-range ultra-large-cabin niche, offering transcontinental and transoceanic capability with high cruise speed and high operating ceiling. Competitors in the segment include other long-range business jets offering similar range and cabin standards; resale and buyer demand tend to favor well-documented maintenance history and avionics like Gulfstream PlaneView. For this particular serial (5199, built 2008) market considerations include age-related component life limits and engine program status for the BR700-710C4-11 engines, factors that influence maintenance scheduling and residual value near the stated $16,000,000 mark.