SEA87FA141

NTSB accident investigation · Beech B200 · Crystal Bay, NV · July 18, 1987

Accident · FatalField investigationFinal report
Date
July 17, 1987, 19:30 local (Jul 18, 1987, 02:30 UTC)
Place
Crystal Bay, NV
Injuries
4 fatal
Damage
Destroyed
Phase of flight
Approach
Aircraft
N1870SBeech B200
Weather
Visual (VMC) · Day
Status
Completed · report May 19, 1989
Report
Approved by Office Director
FAA report
19870717035199A
Case key
40526

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Analysis

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 acft was observed descending out of clouds and manuevering erratically in VMC until it impacted terrain with no apparent attempt to recover. Medical recordsrevealed 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.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of control - in flightApproach - iaf to faf/outer marker (ifr)
Incapacitation(other cardiovascular)Pilot in commandCause

Aircraft

Registration
N1870S
Reported as
Beech B200
Category
Airplane
Serial number
BB1106
Airframe hours
478
Engine
P&W PT6A-42, 850 horsepower, turbo prop
Damage
Destroyed
Fire
On-Ground
Flight
Personal · Part 91
Operator
Richard P. Lieberman
Registered owner
Skywater Lodge
Airworthiness certificate
Standard, Normal
Last inspection
Continuous airworthiness · July 14, 1987 · 1 hours before
Departed
HWD · Hayward, CA
Destination
3SW · S. Lake Tahoe, CA
Flight plan
IFR
Airport
TVL · South Lake Tahoe, runway 18, 8,544 × 150 ft, asphalt

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
54
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Left
Toxicology
Performed
Flight hours
3,995 total · 381 in this make and model · 3,995 as pilot in command · 15 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
160° at 8 knots
Visibility
30 statute miles
Lowest ceiling
3,200 ft broken
Temperature
43 °F, dew point 28 °F
Altimeter
29.00 inHg
Observed at
3SW, 20 nm away

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.