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NTSB Report
January 9, 1988 · Burkhart Grob G109B · N109MD
Tehachapi, CA
Overview
Report Status
Preliminary report
Event Type
Accident
Date
January 9, 1988
Injury Outcomes
2 injuries (1 fatality, 1 minor injury)
Location
Tehachapi, CA
Aircraft
Burkhart Grob G109B
Tail Number
N109MD
Operator
Devereaux Mark
Injuries
Fatal
Aircraft Damage
Substantial
NTSB Number
LAX88LA083
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.
Full Narrative
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.
Flight
Event TypeAccident
Event Time13:45 PST
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBurkhart Grob G109B
Tail NumberN109MD
Aircraft CategoryGli
DamageSubstantial
OperatorDevereaux Mark
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsGrob · 2500E1 · Reciprocating · 95
Seats2
People & Injuries
Injury Summary2 injuries (1 fatality, 1 minor injury)
Fatal1
Serious0
Minor1
Uninjured0
Total2
Crew 1Age 62 · Unknown
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility85 sm
CeilingNone
Temperature / Dew Point55 / 39 C
Altimeter30.00 inHg
Observation Time00:55
Weather SourceWFAC