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ASN Wikibase Occurrence # 42407
Last updated: 14 May 2019
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Date:09-JAN-1988
Time:13:45
Type:Silhouette image of generic G109 model; specific model in this crash may look slightly different
Grob G109B
Owner/operator:Private
Registration: N109MD
C/n / msn: 6353
Fatalities:Fatalities: 1 / Occupants: 2
Other fatalities:0
Aircraft damage: Substantial
Category:Accident
Location:Tehachapi, CA -   United States of America
Phase: En route
Nature:Private
Departure airport:Tehachapi, CA (TSP)
Destination airport:
Investigating agency: NTSB
Narrative:
THE PILOT AND HIS PASSENGER USED THE MOTOR-GLIDER'S POWER PLANT TO TAKEOFF AND CLIMB TO A MOUNTAIN RIDGE TO SOAR. UPON REACHING THE RIDGE TOP THE PILOT SHUT OFF THE POWER PLANT AND ENTERED SOARING FLIGHT. THE PASSENGER STATED THAT THE MOTOR GLIDER DESCENDED INTO TREES AND THEN IMPACTED THE SNOW COVERED TERRAIN. HE SAID THAT THE PILOT DID NOT ATTEMPT TO RESTART THE POWER PLANT 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 as follows:

IN-FLIGHT PLANNING/DECISION..IMPROPER..PILOT IN COMMAND
POWERPLANT..NOT ENGAGED

Contributing Factors:
IMPAIRMENT(DRUGS)..PILOT IN COMMAND

Possibly written off, as the US registration N109MD was cancelled on September 13, 1989

Sources:

1. NTSB Identification: LAX88LA083 at http://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20001213X24923&key=1&queryId=811003c7-b5cb-417e-9505-7523f7e227bb&pgno=4&pgsize=50
2. FAA: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?omni=Home-N-Number&nNumberTxt=109MD


Revision history:

Date/timeContributorUpdates
24-Oct-2008 10:30 ASN archive Added
03-Dec-2009 23:45 DColclasure Updated
23-Sep-2011 03:25 Uli Elch Updated [Aircraft type, Nature, Source, Narrative, Plane category, ]
29-Sep-2011 02:45 Uli Elch Updated [Source, Plane category, ]
10-Aug-2016 12:44 Dr.John Smith Updated [Source, Damage, Narrative]
21-Dec-2016 19:24 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]

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