Tonopah

The Air Force Materiel Command Beech 1900 crashed while on a routine support mission from a remote classified airstrip on the Nellis range to the Tonopah Test Range. It departed at 03:43 for Tonopah. After reporting the runway lights in sight, the pilot configured the airplane for the approach and initiated a circling maneuver to the right for a visual straight-in approach to runway 32. During the turn the pilot suffered a sudden cardiac death. Half way through the turn the airplane began a gradual descent until it impacted the ground. The airplane broke up and burst into flames. Investigation revealed that the pilot had violated federal policy and directives, wilfully deceived flight medical examiners, suppressed significant medical information and ingested inappropriate medications for a deteriorating and dangerous health condition. The pilot had high blood pressure and failed to report it, and denied taking medications to his Federal Aviation Administration flight physical examiners.

The airline transport pilot was repositioning the Beech C99 turboprop cargo hauler on a 73-mile trip without cargo. The pilot had been flying this route for some time and this was his last trip before upgrading to a larger aircraft and route. He told friends that he would take pictures of the scenic parts of the route on his last trip. Three witnesses reported seeing the airplane flying west at low altitude. Two of the witnesses were local ranchers who saw the airplane enter the White Mountains near Trace Plumas Canyon about 7,000 to 8,000 feet msl. White Mountain is 14,246 feet, tapering off north to 13,559 feet and south to 11,285 feet msl. The airplane was reported missing and 2 days later located on White Mountain about 9,400 feet msl. The company flight planned route is 15 miles south of the accident site through Westgard Pass, about 7,291 feet msl. Examination of the low energy impact and the subsequent recovery inspection failed to reveal any mechanical issues.

The crew was engaged in a local training flight at Tonopah Airport. While initiating a go-around manoeuvre, the pilot-in-command lost control of the airplane that entered an uncontrolled descent and crashed. Both occupants were killed.

The DC-3 was cruising at FL115 between Burbank and Hawthorne when a no. 2 engine failure forced the crew to shut the engine down and feathered the propeller. At 20:50 EDT the crew radioed Tonopah, NV and said they wanted to make an emergency landing there. At 20:58 EDT the no. 1 engine lost power. The propeller couldn't be feathered and an emergency glide was initiated towards Mud Lake airfield. A 2000 feet/min rate of descent was necessary to maintain a 110 knots airspeed. All electrical and hydraulic power was lost during the descent. The DC-3 struck the ground in a 10-20 degree nose down attitude during the flareout and overturned. It appeared that there were numerous maintenance irregularities, a.o. improperly adjusted valve clearances, improperly adjusted voltage regulators and improperly installed cylinders. The plane was equipped with 2 28V dc generators and one 12V battery. All electrical components other than the starters were designed for 12V dc operation. It also appeared that all maintenance was performed by companies other than the operator. In many instances inadequate and incomplete records failed to reflect work accomplished.