Modesto City-County

Shortly after taking off, the pilot was instructed to change from the airport tower frequency to the departure control frequency. Numerous radio transmissions followed between tower personnel and the pilot that indicated the airplane’s radio was operating normally on the tower frequency, but the pilot could not change frequencies to departure control as directed. The pilot subsequently requested and received approval to return to the departure airport. During the flight back to the airport, the pilot made radio transmissions that indicated he continued to troubleshoot the radio problems. The airplane’s flight track showed the pilot flew directly toward the runway aimpoint about 1,000 ft from, and perpendicular to, the runway during the left base turn to final and allowed the airplane to descend as low as 200 ft pressure altitude (PA). The pilot then made a right turn about .5 miles from the runway followed by a left turn towards the runway. A pilot witness near the accident location observed the airplane maneuvering and predicted the airplane was going to stall. The airplane’s airspeed decreased to about 53 knots (kts) during the left turn and video showed the airplane’s bank angle increased before the airplane aerodynamically stalled and impacted terrain. Post accident examination of the airframe, engines, and review of recorded engine monitoring data revealed no evidence of any preimpact mechanical malfunctions or failures that would have precluded normal operation. Toxicology testing showed the pilot had diphenhydramine, a sedating antihistamine, in his liver and muscle tissue. While therapeutic levels could not be determined, side effects such as diminished psychomotor performance from his use of diphenhydramine were not evident from operational evidence. Thus, the effects of the pilot’s use of diphenhydramine was not a factor in this accident. The accident is consistent with the pilot becoming distracted by the reported non-critical radio anomaly and turning base leg of the traffic pattern too early during his return to the airport. The pilot then failed to maintain adequate airspeed and proper bank angle while maneuvering from base leg to final approach, resulting in an aerodynamic stall and impact with terrain.

A Beech 65 collided with trees in mountainous terrain after an inflight loss of control. A pilot observed the airplane start a turn to the right, roll right and continued until inverted and enter into a spin. The aircraft was in a steep nose down attitude when it began its pull out. The engines were heard by a ground witness who initially mistook them for an approach motorcycle. The pilot initially flew the aircraft 45 days before the accident and logged 3.5 dual instruction hours. There was no record in the pilot's logbook of any additional flight training since the initial flight. The pilot satisfactorily completed a before in a Cessna 150 four days before the accident. Examination of the wreckage disclosed the right engine had broken exhaust valve, but the left propeller was feathered. There were no preexisting mechanical malfunctions or failures found with the left engine. The aircraft was destroyed and all six occupants were killed.

On approach to Modesto City-County Airport, both engines failed simultaneously. The pilot attempted an emergency landing on a highway when the airplane struck an automobile and crashed. Both occupants on board the aircraft were slightly injured while three people were killed in the car.