N677F

This airframe, tail number N677F, is a 2002-built Gulfstream G-V (Gulfstream V) with manufacture serial 677. It was built by Gulfstream Aerospace and is documented as owned by the National Science Foundation (government, Alexandria, VA, US), which places the aircraft in a research and government-operator context. The airframe is registered in the US and is noted for its conversion from standard executive interiors to a science/mission configuration with instrument racks and payload provisions. The transfer into a science configuration and operation for the National Science Foundation represents the principal notable change in this airframe’s operational history.

The cabin on this specific G‑V is described as a research/mission‑modified layout; while standard executive G‑V layouts support 14–20 seats, N677F is documented with instrument racks and payload provisions rather than a pure executive fit. Avionics fit for this airframe is reported as Honeywell SPX‑8500, a common baseline in Gulfstream V installations although avionics can vary by retrofit. Typical operational use for this configuration emphasizes long‑range, high‑altitude research sorties and mission flights consistent with the National Science Foundation’s needs, operating from its Alexandria, VA, base and regional facilities. Maintenance considerations focus on mission equipment integration and certification alongside standard G‑V airframe and powerplant upkeep.

The Gulfstream G‑V family occupies a long‑range, high‑speed business/research jet niche, offering transoceanic reach and high cruise altitude and speed as evidenced by N677F’s 6,500 nm range and 51,000 ft ceiling. Competing types include long‑range derivatives from Bombardier and Dassault that target similar transcontinental and research mission profiles. For buyers and operators, considerations include the lifecycle of BR710 engines, avionics retrofit currency (the SPX‑8500 baseline may be upgraded), and the impact of mission modifications on resale and role flexibility. Maintenance and resale evaluations for a mission‑modified airframe must balance specialized equipment value against broader market demand for executive-configured G‑V airframes.