Accident Sequence
The airplane struck a residence during a missed approach. The controller had cleared the pilot to proceed directly to the initial approach fix for the GPS approach to the airport. After being cleared for the approach, the airplane continued east at altitudes consistent with the GPS published approach. Radar data showed that at the missed approach point, at the minimum descent altitude of 2,000 feet msl, the airplane turned left, changing course northward toward rapidly rising mountainous terrain.
The published missed approach prescribed a climbing right turn to 4,000 feet, with a note that circling north of the airport was not permitted. The airplane remained in a slight left turn and climbed to 3,300 feet msl over 1 minute 9 seconds. The controller advised the pilot that he was flying off course toward mountainous terrain and instructed an immediate left turn heading south. The airplane descended to 3,200 feet msl and made a left turn southerly. It continued descending to 2,100 feet msl, and the pilot read back the instructions. Subsequently, the airplane climbed to 3,300 feet, with an indicated ground speed of 35 knots, and began a sharp left turn before descending to impact with a house.
At no time during the approach did the pilot indicate difficulty navigating or request assistance.
Investigation
Examination of the airplane revealed no evidence of mechanical malfunction or failures prior to the impact. However, the cockpit and instrument panel sustained severe thermal damage, preventing detailed examinations.
Probable Cause
The official probable cause stated that the pilot became lost or disoriented during the approach, failed to maintain course alignment with the missed approach procedure, and subsequently lost control of the airplane.