N177BB

This entry covers airframe N177BB, a Gulfstream G-IV built in 1988 with manufacturer serial number 1073 by Gulfstream Aerospace. The aircraft is registered in the US and is recorded as owned by SBG AIRCRAFT SALES AND CONSULTING LLC, based in Missouri City, TX, US, a status that has appeared on recent civil registries. Registration records show the airframe remaining in civil executive use with limited public sales history, and the type-recorded market valuation for this airframe is listed at $3,000,000, reflecting typical late-1980s G-IV condition and outfitting considerations. The airframe is categorized as a fixed-wing multi-engine aircraft and carries a manufacturer seating capacity of 22 per registry listings.

The cabin of N177BB conforms to a typical three-zone executive layout; modern completions of the G-IV commonly feature 12–14 executive seats despite the registry listing 22 seats as the certified capacity. The installed avionics reflect period Collins / Honeywell-era integrated flight deck equipment, though specifics vary by completion and modification history; upgrades are common in the fleet. Operationally the airframe’s long-range capability and high cruise speed support transcontinental and transoceanic executive missions typical of Gulfstream G-IV operators, with the owner/operator based in Missouri City, TX, US providing regional dispatch and maintenance oversight. Routine maintenance considerations follow long-term vintage large-cabin practices, including systems retrofits and engine shop visits consistent with Rolls-Royce Tay maintenance cycles.

The Gulfstream G-IV occupies a large-cabin, long-range business jet niche with cruise and range performance that competes against late-model Bombardier and Dassault types from the same era. Demand in the pre-owned market centers on well-documented maintenance, timely avionics upgrades, and interior refurbishment; these factors drive resale and charter appeal. For an airframe like N177BB—built 1988 with classic Tay powerplants—prospective buyers weigh the cost of avionics modernization and interior refit against the aircraft’s remaining airframe life and the listed $3,000,000 valuation.