NTSB Identification: LAX88LA083.
The docket is stored on NTSB microfiche number 38602.
Accident occurred Saturday, January 09, 1988 in TEHACHAPI, CA
Probable Cause Approval Date: 07/18/1990
Aircraft: BURKHART GROB G109B, registration: N109MD
Injuries: 1 Fatal,1 Minor.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

THE PILOT AND HIS PASSENGER USED THE MOTORGLIDER'S POWERPLANT TO TAKEOFF AND CLIMB TO A MOUNTAIN RIDGE TO SOAR. UPON REACHING THE RIDGE TOP THE PILOT SHUT OFF THE POWERPLANT AND ENTERED SOARING FLIGHT. THE PASSENGER STATED THAT THE MOTORGLIDER DESCENDED INTO TREES AND THEN IMPACTED THE SNOW COVERED TERRAIN. HE SAID THAT THE PILOT DID NOT ATTEMPT TO RESTART THE POWERPLANT BEFORE COLLIDING WITH THE TREES. TOXICOLOGICAL TESTS ON THE PILOTS BLOOD AND URINE WERE CONDUCTED. THEY REVEALED 0.9 MCG/ML OF BROMPHENIRAMINE IN HIS URINE AND LOW CONCENTRATIONS OF PHENYLPROPANOLAMINE AND 6.0 MG/ML OF MARIJUANA METABOLITES IN HIS BLOOD. IN ADDITION, 62.0 MG/ML OF MARIJUANA METABOLITES WERE DETECTED IN HIS URINE.

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

IN-FLIGHT PLANNING/DECISION..IMPROPER..PILOT IN COMMAND

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

POWERPLANT..NOT ENGAGED





Contributing Factors

IMPAIRMENT(DRUGS)..PILOT IN COMMAND

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