ASN Aircraft accident Beechcraft B200 Super King Air N1870S Crystal Bay, NV
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Status:Accident investigation report completed and information captured
Date:Friday 17 July 1987
Type:Silhouette image of generic BE20 model; specific model in this crash may look slightly different
Beechcraft B200 Super King Air
Operator:Richard P. Lieberman
Registration: N1870S
MSN: BB-1106
First flight: 1983
Total airframe hrs:478
Engines: 2 Pratt & Whitney Canada PT6A-42
Crew:Fatalities: 1 / Occupants: 1
Passengers:Fatalities: 3 / Occupants: 3
Total:Fatalities: 4 / Occupants: 4
Aircraft damage: Damaged beyond repair
Location:Crystal Bay, NV (   United States of America)
Phase: En route (ENR)
Departure airport:Hayward Air Terminal, CA (HWD/KHWD), United States of America
Destination airport:Lake Tahoe Airport, CA (TVL/KTVL), United States of America
While on an instrument flight plan in IMC, the flight was cleared for an instrument approach to the South Lake Tahoe Airport, the intended destination. The aircraft departed the initial approach fix on the published transition to the final approach course. Radar contact was lost at 11,400 feet. Afterward, the aircraft was observed descending out of clouds and manoeuvring erratically in VMC until it impacted terrain with no apparent attempt to recover. Medical records revealed pilot had a history of hypertension, hyperlipidemia, and recent loss of 41 pounds on a rigid weight loss program. The autopsy revealed severe arteriosclorosis. Medical records indicated the pilot had been taking diazide intermittently for several years. Post-accident tox results were negative. The circumstances of the accident, in combination with the pilot's severe diet, medical history, and postmortem examination results support the conclusion that the pilot became incapacitated in flight.

Probable Cause:

Incapacitation(other cardiovascular)..pilot in command

Accident investigation:

Investigating agency: NTSB
Status: Investigation completed
Duration: 1 year and 10 months
Accident number: SEA87FA141
Download report: Summary report

Flightcrew incapacitation
Loss of control


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This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Hayward Air Terminal, CA to Lake Tahoe Airport, CA as the crow flies is 229 km (143 miles).
Accident location: Approximate; accuracy within a few kilometers.

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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