Kistler Airport
Aircraft Accident/Incident Report

Oakdale, California 95361
Sunday, October 8, 2006 13:16 PDT

NTSB Narrative Summary Released at Completion of Accident

Upon experiencing a total loss of engine power during cruise flight, the pilot made a forced landing during which the airplane overran the runway's departure end and impacted a fence. The pilot reported that during the flight she "heard an abnormal noise coming from the engine - a loud knocking sound. Within just a few seconds, the engine exploded and a rush of oil from the engine compartment flooded the wind screen, obscuring about 90 percent of the forward field of view....The cabin started to fill with smoke from burnt oil," and the propeller stopped rotating. The pilot force landed on a 2,000-foot-long airstrip. Upon exiting the airplane the pilot observed that the top portion of the engine's case was punctured. The pilot had purchased the 1978 model airplane earlier during 2006, and she had possession of its maintenance records. The records indicated that the engine received three (field) overhauls in 1980, 1991, and in 1994. By the accident date, the engine's total time and time since last overhaul was 5,538 and 950 hours, respectively. Examination of the engine found that it had sustained an internal catastrophic mechanical failure, which resulted in a breach of the crankcase at the forward top section. The oil lines were found secure at their respective engine fittings, the crankshaft and respective connecting rods exhibited severe heat distress consistent with lubrication deprivation. The number 1, 2 and 4 connecting rods were displaced from their respective journals. The number 3 connecting rod remained on the journal, which exhibited severe heat distress. The crankshaft and camshaft remained intact. No anomalies were found with the accessory components and gears, or with the lubricating system. The specific event leading to the lubrication deprivation and heat distress was not identified.

NTSB Probable Cause Narrative

A total loss of engine power resulting from lubrication deprivation for undetermined reasons.

Event Information

Type of Event Accident
Event Date 10/8/2006
Event Day of the Week Sunday
Time of Event 1316
Event Time Zone Pacific Daylight Time
Event City Oakdale
Event State CALIFORNIA
Event Country --
Zipcode of the event site 95361
Event Date Year 2006
Event Date Month 10
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 375134N
Event Location Longitude 1203319W
Event Location Airport Kistler
Event Location Nearest Airport ID 08CL
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles 0
Degrees magnetic from airport --
Airport Elevation 1025
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1253 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 218
Weather Observation Facility ID MOD
Elevation of weather observation facility 97
Distance of event from weather observation facility (units?) 24
Time Zone of the weather observation PDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 24
Dew Point at event time (in degress fahrenheit) 7
Wind Direction (degrees magnetic) --
Variable Wind Indicator Variable
Wind Speed (knots) 5
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 22525
NTSB Notification Source FAA
NTSB Notification Date Oct 8 2006 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Nov 29 2007 8:02AM
User who most recently changed record NTSB\johb
Basic weather conditions Visual Meteorological Cond
FAA District Office Fresno, Ca

Aircraft Involved

Aircraft #1

Aircraft Registration Number N39ER
NTSB Number LAX07LA004
Missing Aircraft Indicator --
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 Grumman American
Aircraft Model AA-5B
Aircraft Series Identifier --
Aircraft Serial Number AA5B0901
Certified Max Gross Weight 2400
Aircraft Category Airplane
Aircraft Registration Class --
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 --
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours --
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Leigh Carr & Douglas Curry
Aircraft Owner Street Address P.O. Box 921
Aircraft Owner City Groveland
Aircraft Owner State CA
Aircraft Owner Country USA
Aircraft Owner Zipcode 95321
Operator is an individual? No
Operator Name Leigh W. Curry
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address --
Operator City San Mateo
Operator State CA
Operator Country USA
Operator Zip code 94402
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation --
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 Yes
Departure Point Same as Event No
Departure Airport Code E45
Departure City Groveland
Departure State CA
Departure Country USA
Departure Time 1245
Departure Time Zone PDT
Destination Same as Local Flt --
Destination Airport Code SQL
Destination City San Carlos
Destination State CA
Destination Country USA
Specific Phase of Flight Landing - roll
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Oct 26 2007 2:47PM
User who most recently changed record COOS
Since inspection or accident --
Event Location Runway Number and Location --
Runway Length 2000
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --