Aircraft Accident/Incident Report

Atwater, California 95301
Sunday, July 6, 1986 14:00 PDT

NTSB Narrative Summary Released at Completion of Accident

A CESSNA 175 COLLIDED WITH A TREE AFTER A TOTAL LOSS OF POWER DURING A VFR X-COUNTRY FLT. THE PLT INDICATED HE EXPERIENCED AN ENG FAILURE AT 2,000 FT MSL, WHILE ON DESCENT, APRX 15 MI FROM HIS DEST. HE REPORTED THAT THE ENG BEGAN TO VIBRATE SLIGHTLY. THE VIBRATIONS RAPIDLY BECAME WORSE, THEN THE ENG STOPPED SUDDENLY, AND SMOKE ENTERED THE COCKPIT. THE PLT WAS FORCED TO LAND AND SELECTED AN OPEN FIELD BOUNDED BY AN ALMOND ORCHARD. WHILE ON FINAL APCH, THE LEFT WING DIPPED AND STRUCK AN ALMOND TREE CAUSING THE ACFT TO LAND SHORT. THE ACFT CAME TO REST ON THE EDGE OF AN OPEN FIELD WHERE IT NOSED OVER IN A DITCH. THE ENG OIL SYST HAD BEEN MODIFIED WITH PLUMBING THAT ADDED A LINE WHICH EXTENDED THE DRAIN FROM THE DRAIN PLUG TO BELOW THE ENG COWLING. THE LINE WAS PLUGGED AT THE COWLING END AND THERE WAS NO PETCOCK TO RESTRICT THE OIL FROM DRAINING WHEN THE PLUG WAS REMOVED. THERE WAS A LEAK AT ONE OF THE FITTING WELDS WHICH ALLOWED THE ENG OIL TO FLOW OUT. NO OIL WAS FOUND IN THE ENG OIL SYST WHEN IT WAS EXAMINED.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 7/6/1986
Event Day of the Week Sunday
Time of Event 1400
Event Time Zone Pacific Daylight Time
Event City ATWATER
Event State CALIFORNIA
Event Country --
Zipcode of the event site 95301
Event Date Year 1986
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 Weather Observation Facility
Time of the weather observation 1357 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 60
Weather Observation Facility ID MER
Elevation of weather observation facility 188
Distance of event from weather observation facility (units?) 5
Time Zone of the weather observation PDT
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 4000
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling None
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) 28
Dew Point at event time (in degress fahrenheit) 12
Wind Direction (degrees magnetic) 320
Variable Wind Indicator Unknown
Wind Speed (knots) 8
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Minor
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor 2
Injury Total None --
Injury Total Serious --
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) 1542
NTSB Notification Source --
NTSB Notification Date Jul 6 1986 12:00AM
NTSB Notification Time 1820
Fiche Number and/or location -used to find docket information 31956
Date of most recent change to record Jan 2 2001 9:14AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N7108M
NTSB Number LAX86LA281
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 175
Aircraft Series Identifier 175
Aircraft Serial Number 55408
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 Annual
Date of Last Inspection Aug 20 1985 12:00AM
Airframe hours since last inspection 23
Airframe Hours 2428
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name MILFORD EDWARDS
Aircraft Owner Street Address 4906 GRIFFIN RD.
Aircraft Owner City HUGHSON
Aircraft Owner State CA
Aircraft Owner Country
Aircraft Owner Zipcode 95326
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 VIS
Departure City VISALIA
Departure State CA
Departure Country
Departure Time 1300
Departure Time Zone PDT
Destination Same as Local Flt --
Destination Airport Code 015
Destination City TURLOCK
Destination State CA
Destination Country
Specific Phase of Flight Approach
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:36AM
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 --