Gulfstream III

Radar's rough range is about $2.2M to $5M for a 1986 and $2.2M to $5M for a 1980. From Radar's listing-based estimates for business jets of similar engine thrust and age. These are rough ranges, not appraisals: hours, engines, damage history, equipment and the logbooks move the price of any one aircraft.

What moves the price of any one III: total time and engine time, engine program enrollment, damage history, avionics and equipment, and complete logbooks. Build year sets the baseline shown on this page; a III with high hours, an engine near overhaul or gaps in its records sells below it, and one with low time, recent inspections and full records above it.

Radar does not list aircraft for sale. It tracks all 49 US-registered IIIs by tail number, each with its registration record and a value estimate, so you can check a listing against the value of its build year and look up the aircraft's own history before you call.

49 IIIs are on the US civil aircraft register (FAA file of October 2026), built 1980 to 1986. Aircraft registered in other countries are not counted. Radar has a page for each US registration.

As published: a maximum operating Mach of 0.85, a ceiling of 45,000 ft and 2 × Rolls-Royce Spey RB(163-25)511-8 engines. A given aircraft varies with its completion, weight and modifications.

Its maximum operating Mach number (the speed limit it is certified to) is 0.85. Cruise speeds depend on altitude and weight.

The III is certified to 45,000 feet. Heavy aircraft climb there in steps as they burn fuel.

Of the 49 US-registered IIIs, 47 (96%) are registered to companies, trusts and other entities and 2 to individuals. Radar names entity owners only; individuals are shown as privately registered. The most common states of registration are DE (14), FL (8), CA (5).