Aircraft Accident/Incident Report

So Lake Tahoe, California 95716
Tuesady, October 24, 1989 13:00 PDT

NTSB Narrative Summary Released at Completion of Accident

THE NON-INSTRUMENT RATED PILOT OBTAINED TWO PREFLIGHT WEATHER BRIEFINGS PRIOR TO THE CROSS COUNTRY FLIGHT. BOTH BRIEFINGS CAUTIONED AGAINST VFR FLIGHT DUE TO TURBULENCE, ICING, MOUNTAIN OBSCUREMENT AND THUNDERSTORMS OVER THE PILOT'S INTENDED ROUTE. RECORDED RADAR DATA ESTABLISHED THAT THE AIRCRAFT MAINTAINED A CONSTANT CRUISE ALTITUDE OF 13,500 FT AFTER DEPARTURE UNTIL IT WAS OVER THE ACCIDENT SITE. THE AIRCRAFT THEN ENTERED A RIGHT SPIRALING DESCENT WHICH CONTINUED UNTIL THE AIRCRAFT DROPPED BELOW THE RADAR COVERAGE FLOOR OF 9,300 FT (1,000 FT ABOVE THE ACCIDENT SITE ELEVATION). EXAMINATION OF THE WRECKAGE REVEALED THAT THE WING LEVELER AUTO PILOT WAS IN THE ON POSITION. WEATHER REPORTS AND WITNESS OBSERVATIONS ESTABLISHED THAT BROKEN TO OVERCAST CLOUDS EXISTED WITH BASES 300 FT BELOW THE SITE ELEVATION AND TOPS AT ABOUT 12,000 TO 13,000 FEET.

NTSB Probable Cause Narrative

THE PILOT'S DECISION TO CONTINUE VFR FLIGHT AFTER ENCOUNTERING INSTRUMENT METEOROLOGICAL CONDITIONS.

Event Information

Type of Event Accident
Event Date 10/24/1989
Event Day of the Week Tuesday
Time of Event 1300
Event Time Zone Pacific Daylight Time
Event City SO LAKE TAHOE
Event State CALIFORNIA
Event Country --
Zipcode of the event site 95716
Event Date Year 1989
Event Date Month 10
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport
Event Location Nearest Airport ID
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 0
Degrees magnetic from airport 0
Airport Elevation 0
Weather Briefing Completeness Full
Investigator's weather source Weather Observation Facility
Time of the weather observation 1245 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 82
Weather Observation Facility ID TVL
Elevation of weather observation facility 6264
Distance of event from weather observation facility (units?) 10
Time Zone of the weather observation PDT
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Partial Obscuration
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 4
Dew Point at event time (in degress fahrenheit) -1
Wind Direction (degrees magnetic) 180
Variable Wind Indicator Unknown
Wind Speed (knots) 15
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 25
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) 0
Intensity of Precipitation Light
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal 3
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 3
Investigating Agency NTSB
NTSB Docket Number (internal use) 2189
NTSB Notification Source --
NTSB Notification Date Oct 30 1989 12:00AM
NTSB Notification Time 1330
Fiche Number and/or location -used to find docket information 41949
Date of most recent change to record Dec 13 2000 1:08PM
User who most recently changed record dbo
Basic weather conditions Instrument Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N30228
NTSB Number LAX90FA016
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name CESSNA
Aircraft Model 177
Aircraft Series Identifier 177
Aircraft Serial Number 17701134
Certified Max Gross Weight 2350
Aircraft Category Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 4
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Unknown
Date of Last Inspection --
Airframe hours since last inspection 0
Airframe Hours --
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name EDWARD A. MORRIS
Aircraft Owner Street Address 906 W. GRAYSON
Aircraft Owner City MODESTO
Aircraft Owner State CA
Aircraft Owner Country
Aircraft Owner Zipcode 95331
Operator is an individual? --
Operator Name
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address
Operator City
Operator State
Operator Country
Operator Zip code
Operator Code
Owner has at least one certificate None
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Personal
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code MOD
Departure City MODESTO
Departure State CA
Departure Country
Departure Time 1204
Departure Time Zone PDT
Destination Same as Local Flt --
Destination Airport Code O04
Destination City CARSON CITY
Destination State NV
Destination Country
Specific Phase of Flight Descent
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:35AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length 0
Runway Width 0
Sight Seeing flight No
Air Medical Flight No
Medical Flight --