09/30/2010. The Model 680F was announced in March 1960 and differed from the basic 560F, amongst other changes, in having two 380 hp Lycoming IGSO-540 supercharged six-cylinder horizontally-opposed air-cooled engines. Flying a standard Model 680F, Jerrie Cobb set up an international class C-l.d height record of 37,010 ft (11,281 m) on September 20, 1960.

The pictured aircraft never served with the USAF, nor has the serial 63-7948 ever been applied to an USAF aircraft. Produced in the early 1960s (as the 1060th Aero Commander aircraft, and the 58th 680F), and while registered N6185X, the aircraft came in the news when it was damaged in a collision with a dirt bank on landing roll in an off-airfield landing near Wagon Mound, New Mexico, USA, on June 25, 1975. Suspected of trafficking controlled substances it was seized by the US Marshal of Albuquerque on September 5, 1975.

Two years later, September 1, 1977 it was sold to Johnson Aviation Inc. of Addison, Texas, but was operated by the Drug Enforcement Administration. On March 13, 1980, it was sold to the US Customs Service, reregistered as N37948. After it was withdrawn from use it was transferred to the Robins AFB Museum, given an USAF paint scheme, and the fake serial 63-7948, a variant on its last registration. The fake serial was originally one of a batch (63-7924 to 63-7971) allotted to 48 de Havilland DHC-4 CV-2A Caribou transports that subsequently were cancelled.

Span: 49 ft 6 in (15.09 m)
Length: 35 ft 4.25 in (10.70 m)
Height: 14 ft 6 in (4.42 m)
Wing area: 255 sq.ft (23.69 sq.m)
Weight empty: 4,800 lb (2,177 kg)
Loaded weight: 8,000 lb (3,629 kg)
Max speed: 225 mph (410 kmh) at sea level
Max speed: 290 mph (467 kmh) at 15,500 ft (4,725 m)
Cruise speed: 244 mph (393 kmh) at 10,000 ft (3,050 m)
Climb: 1,660 ft (506 m)/min
Service ceiling: 28,500 ft (8,690 m)
Range: 1,400 mls (2,250 km)