NTSB Identification: LAX06FA222.
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Accident occurred Saturday, July 01, 2006 in Somis, CA
Probable Cause Approval Date: 02/28/2008
Aircraft: Raytheon Aircraft Company A36, registration: N615M
Injuries: 2 Fatal,2 Serious.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

The pilot was departing on a cross-country flight when he advised an air traffic controller that he needed to land at the nearest airport. The pilot did not specify why he needed to land. An air traffic controller initially cleared him to one airport, and then the pilot asked for a clearance to closer airport. Multiple controllers were in contact with the pilot after his initial call that he needed to land. During the first call, the initial controller and a second controller had a discussion about what the nature of the problem was, and if the pilot was declaring an emergency. The primary controller reported that he thought the pilot was having an engine problem, and he was not declaring an emergency. Once the pilot was handed off to the second controller, the pilot was asked if he had an engine problem and if wanted to declare an emergency. The pilot replied negatively to both questions. The pilot was then handed off to the final controller at the airport where he wanted to land. The pilot was unable to advise the air traffic controller at the landing airport of his position. The pilot was cleared to land, but then he reported an unspecified emergency and collided with terrain approximately 3 miles north of the airport. The airplane came to rest straddling a ditch, adjacent to a road, and was mostly consumed in the post-impact fire. The engine came to rest at the top of the ditch on the south side, and the tail section came to rest on top of the ditch on the north side. An engine inspection and teardown were conducted, with no mechanical anomalies noted that would have precluded normal operation. No evidence was found of any airframe system malfunction or flight control problem. To date, the pilot has not responded to requests from the investigator-in-charge for a statement as to the source of the problem and subsequent emergency. The investigation determined that the pilot was taking a prescription antidepressant, a metabolite of which was detected on post-accident toxicology testing. He was also reported to have recently begun using a prescription anti-anxiety medication, not detected on post-accident toxicology testing, but for which therapeutic levels are below the detection threshold on such testing. Neither medication would have been approved for use by the FAA. The pilot had not reported any mental conditions or use of medications at the time of his most recent application for airman medical certificate nearly 2 years prior to the accident.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

a ground collision during an emergency landing for undetermined reasons.

Full narrative available

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