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  #1  
Old 04-24-2018, 07:58 AM
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Sam Buchanan Sam Buchanan is online now
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Default Final Report; 2016 RV-4 fatal accident

https://app.ntsb.gov/pdfgenerator/Re...=HTML&IType=FA
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  #2  
Old 04-24-2018, 08:37 AM
Johnnybgoode Johnnybgoode is offline
 
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Default What can you say?

Life is too short to fly impaired. Not surprising, if this is indeed a contributing factor.
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Old 04-24-2018, 08:38 AM
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pierre smith pierre smith is offline
 
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Default Yep

Thanks Sam. I've often warned pilots about powerlines and rivers. Sad.

Best,
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  #4  
Old 04-24-2018, 09:54 AM
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Toxicology testing performed by the FAA Bioaeronautical Research Sciences Laboratory, Oklahoma City, Oklahoma, for the pilot was negative for carbon monoxide and cyanide. The testing identified ethanol at 0.059 gm% in urine, 0.037 gm% in muscle, 0.036 gm% in brain, and 0.033 gm% in blood (unknown source). In addition, 10.1 ng/ml of tetrahydrocannabinol (THC, the primary psychoactive substance in marijuana) and 13.1 ng/ml of 11-carboxytetrahydrocannabinol (THC-COOH) was identified in blood. THC- COOH was also identified in urine.

Ethanol is the intoxicant commonly found in beer, wine, and liquor. It acts as a central nervous system depressant. The effects of ethanol on aviators are generally well understood; it significantly impairs pilots' performance, even at very low levels. Title 14 CFR section 91.17 (a) prohibits any person from acting or attempting to act as a crewmember of a civil aircraft while having 0.040 gm/dl or more ethanol in the blood. Because ingested alcohol is distributed throughout the body, levels from different post mortem tissues are usually similar. Ethanol may also be produced in body tissues by microbial activity after death.

Marijuana is a psychoactive drug with therapeutic levels as low as 0.001 ug/ml. According to NHTSA's Drugs and Human Performance Fact Sheets, "It is difficult to establish a relationship between a person's THC blood or plasma concentration and performance impairing effects. Concentrations of parent drug and metabolite are very dependent on pattern of use as well as dose. THC concentrations typically peak during the act of smoking, while peak 11-OH THC concentrations occur approximately 9-23 minutes after the start of smoking. Concentrations of both analytes decline rapidly and are often < 0.005 ug/mL at 3 hours." A detailed report of the toxicological results is included in the public docket associated with the investigation.

Just the facts, do the math and draw your own conclusions.
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  #5  
Old 04-24-2018, 10:32 AM
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rvator51 rvator51 is offline
 
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As someone who has lost a friend to a powerline, altitude is your friend.
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  #6  
Old 04-24-2018, 01:14 PM
Canadian_JOY Canadian_JOY is offline
 
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A half-inch line is invisible in flight, and nearly invisible even when standing still unless you're able to get just the right contrast/background/lighting conditions. There's no hope of "see and avoid" tactics helping you avoid a line of this size while flying.
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  #7  
Old 04-24-2018, 10:19 PM
Schooner69 Schooner69 is offline
 
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NEVER low fly in an area you have not previously recce'd. Even that caution is useless unless you can guarantee that nothing has been erected/strung since your recce...

I know of three people killed and two aircraft destroyed after encountering a wire because of spur-of-the-moment low flying.
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Old 04-24-2018, 11:19 PM
BobTurner BobTurner is offline
 
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Location: Livermore, CA
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Quote:
Originally Posted by Schooner69 View Post
NEVER low fly in an area you have not previously recce'd. Even that caution is useless unless you can guarantee that nothing has been erected/strung since your recce...

g.
Yep. Some years back a Mooney crashed, fatally, in the Altamont pass east of KLVK. Scud running in the dark. They hit a high tension line that had been installed while they were away.
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  #9  
Old 04-25-2018, 03:48 PM
moosepileit moosepileit is offline
 
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Location: Floyds Knobs, IN
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Default

They hit a Zipline cable, right? Powerlines at least may give you chart depictions and towers to see. A zipline in the trees gives neither.
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  #10  
Old 05-12-2018, 01:51 AM
dlomheim dlomheim is offline
 
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Location: (2OK2) OK City, OK
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Default Common Killers

Quote:
Originally Posted by Johnnybgoode View Post
Life is too short to fly impaired. Not surprising, if this is indeed a contributing factor.
Yeah, too many passengers have been killed shortly after a pilot says: "Hey, watch this..."; and if the pilot is on drugs, all fear may be gone which further increases the likelihood of a bad outcome!

Doug

RV-9A FWF
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