Aircraft Accident/Incident Report

Lake Isabella, California 93240
Saturday, July 17, 1982 9:30 PDT

NTSB Narrative Summary Released at Completion of Accident

AFTER TAKEOFF, THE ACFT WAS FLOWN APRX 5 MI SOUTH OF THE ARPT & WAS AT ABOUT 1000 FT ABOVE A LAKE WHEN THE ENG BEGAN VIBRATING VIOLENTLY & LOSING POWER. THE PLT TURNED TOWARD THE SHORE & TRIED VARIOUS MIXTURE SETTINGS IN AN ATTEMPT TO CORRECT THE PROBLEM. SUBSEQUENTLY, DURING A FORCED LANDING, THE ACFT COLLIDED WITH A FENCE. AN EXAM OF THE ENG REVEALED THAT THE STARTER GEAR WAS DETACHED FROM THE STARTER SHAFT. METAL FRAGMENTS WERE FOUND IN NUMEROUS AREAS OF THE ENG, INCLUDING THE OIL SCREEN, WHICH HAD COLLAPSED. THE OIL PUMP GEAR CAVITIES WERE SCORED, AS WELL AS THE CRANKSHAFT MAIN JOURNAL BEARINGS, WHICH EXHIBITED EXTENSIVE COPPER LAYER EXPOSURE. THE FRONT JOURNAL BEARINGS WERE ALSO EMBEDDED WITH ALUMINUM. THE #1 CONNECTING ROD HAD SEPARATED FROM ITS CRANKPIN. THE CRANKPIN WAS DISCOLORED & HAD FRAGMENTS OF STEEL WELDED TO THE JOURNAL. BOTH CONNECTING ROD CAP BOLTS OF THE FAILED ROD WERE NECKED DOWN AT THE FRACTURE FACES.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 7/17/1982
Event Day of the Week Saturday
Time of Event 930
Event Time Zone Pacific Daylight Time
Event City LAKE ISABELLA
Event State CALIFORNIA
Event Country --
Zipcode of the event site 93240
Event Date Year 1982
Event Date Month 7
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 Unknown
Investigator's weather source Unknown
Time of the weather observation 0
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling Unknown
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 15
Air Temperature at event time (in degrees celsius) 72
Dew Point at event time (in degress fahrenheit) 0
Wind Direction (degrees magnetic) 315
Variable Wind Indicator Unknown
Wind Speed (knots) 5
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) 0
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 2
Injury Total Serious --
Injury Total All --
Investigating Agency FAA
NTSB Docket Number (internal use) 3409
NTSB Notification Source --
NTSB Notification Date --
NTSB Notification Time 0
Fiche Number and/or location -used to find docket information
Date of most recent change to record Oct 31 2002 4:04PM
User who most recently changed record NTSB\ZUZL
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N704GL
NTSB Number LAX82FA261
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name CESSNA
Aircraft Model 150M
Aircraft Series Identifier 150M
Aircraft Serial Number 15078599
Certified Max Gross Weight 1600
Aircraft Category Airplane
Aircraft Registration Class Unknown
Aircraft is a homebuilt? Unknown
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 2
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 32
Airframe Hours 2714
ELT Installed Yes
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name RIALTO AVN. INC.
Aircraft Owner Street Address 1554 N. LINDEN
Aircraft Owner City RIALTO
Aircraft Owner State CA
Aircraft Owner Country
Aircraft Owner Zipcode 92376
Operator is an individual? --
Operator Name RIALTO AVN. INC.
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address 1554 N. LINDEN
Operator City RIALTO
Operator State CA
Operator Country
Operator Zip code 92376
Operator Code
Owner has at least one certificate Yes - certificate holder
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 L05
Departure City KERNVILLE
Departure State CA
Departure Country
Departure Time 925
Departure Time Zone
Destination Same as Local Flt --
Destination Airport Code L67
Destination City RIALTO
Destination State CA
Destination Country
Specific Phase of Flight Landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Sep 18 2002 4:50PM
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 --