Development and Design Philosophy
Adam Aircraft Industries launched the A-700 program in 2003 as part of an ambitious strategy to capture the emerging very light jet market. The company's approach centered on parts commonality with their existing A500 piston twin, sharing approximately 80 percent of components to dramatically reduce development and manufacturing costs. This engineering decision allowed Adam to target an aggressive $1.9 million price point—roughly half that of traditional light jets.
The A-700's design featured several innovative elements that distinguished it from conventional business jets. Engineers selected a twin-boom configuration with aft-fuselage mounted engines, creating a distinctive silhouette with upturned winglets and a high horizontal stabilizer. The all-composite airframe utilized the overbuilt A500 structure, reinforced to handle jet engine loads and pressurization stresses of 8.33 psi, enabling an 8,000-foot cabin altitude at the aircraft's 41,000-foot service ceiling.
Engine Technology and Performance
Powering the A-700 were two Williams FJ33-4A turbofan engines, each producing 1,350 pounds of thrust. Williams International had developed these compact powerplants using cruise missile technology, emphasizing efficiency over raw power. The engines enabled the A-700 to achieve its projected 340-knot cruise speed at Mach 0.60 while burning only 500 pounds of fuel per hour—half the consumption rate of earlier jets like the 1972 Cessna Citation.
The fuel system incorporated 230 gallons in wing tanks with plans for an additional 100-gallon belly tank to achieve the targeted 1,400-nautical-mile range. Landing gear remained identical to the A500's wide-spaced trailing-link design, maintaining the parts commonality philosophy that drove development costs down.
Test Program and Prototypes
The first A-700 prototype took flight on July 28, 2003, marking Adam Aircraft as an early pioneer in the VLJ segment, predating competitors like the Cessna Mustang and Embraer Phenom 100. The company constructed two prototypes—an initial test aircraft and a conforming prototype—before financial difficulties halted progress. Test flights validated the design's basic performance parameters and demonstrated the effectiveness of the Williams engines in the twin-boom configuration.
FAA certification was initially planned for 2008, later pushed to the first quarter of 2010. The certification authority had accepted prior test data to streamline the approval process, recognizing the A500's proven systems integration.
The Rise and Fall of Adam Aircraft Industries
Founded in 1998 in Denver, Colorado, Adam Aircraft Industries represented the entrepreneurial spirit of the early 2000s aviation boom. The company successfully developed and certified the A500 piston twin, delivering seven production aircraft with first flight in 2002. However, the A-700 program proved more challenging than anticipated, requiring substantial capital investment without generating revenue.
The 2008 financial crisis proved fatal to Adam's ambitious plans. The company ceased operations on February 11, 2008, and filed for Chapter 7 bankruptcy liquidation on February 19, 2008. In April 2008, AAI Acquisition Inc., controlled by Russian investment group Industrial Investments, purchased the company's assets from bankruptcy court.
The new ownership briefly rekindled hope, restarting operations in May 2008 with 60 employees and claiming 75 orders for the A-700. However, the global recession's deepening impact forced suspension of development on October 28, 2008. By April 2009, all remaining staff had been laid off and operations permanently ceased.
Technical Legacy and Market Impact
Despite never reaching production, the A-700's influence on the VLJ market proved significant. Its early first flight demonstrated the viability of very light jets as a market segment, encouraging other manufacturers to accelerate their own programs. The Williams FJ33 engines found success in later applications, most notably powering the Cirrus Vision SF50, which has delivered over 400 aircraft since entering service in 2016.
The A-700's composite twin-boom design showcased innovative approaches to VLJ architecture, though conventional configurations ultimately dominated the market. Its ambitious pricing targets highlighted the cost pressures that would define the VLJ segment, with manufacturers struggling to balance performance, certification costs, and market expectations.
Current Status
No A-700 aircraft remain in flying condition today, and none are known to survive in museums. The two prototypes' ultimate fate remains undocumented following the company's final closure in 2009. The A-700 stands as a cautionary tale of ambitious aviation entrepreneurship, representing both the innovation and financial risks inherent in aircraft development during the early 21st century's aviation boom and subsequent bust.