Johnson Valley Airport
Aircraft Accident/Incident Report

Johnson Valley, California 92285
Monday, August 2, 1999 13:32 PDT

NTSB Narrative Summary Released at Completion of Accident

The airstrip manager arrived at the airstrip and found the aircraft parked on the ramp. The pilot informed him that he had noticed a drop in oil pressure during his flight and had landed and 'fixed the problem.' The pilot asked for oil and the airport manager gave him 6 quarts of automotive oil. The manager saw the pilot pour 3 quarts of oil into the oil tank and put the additional 3 quarts of oil in the back of the aircraft cockpit. He hand-propped the aircraft and the engine fired immediately with no apparent difficulties. After the pilot took off, the manager noticed dark smoke coming from the exhaust. The airplane completed a crosswind and downwind traffic pattern leg, and appeared to be headed back toward the airport. The airstrip manager stated that as the airplane turned from base to final about 300 feet agl, it stalled, entered a 180-degree spin, and impacted the ground in a near vertical, nose down attitude. There were streaks of oil underneath the engine outward to the left wing and wheel pants, and the bottom of the fuselage was covered in oil. The oil line that provides the reading for the oil pressure gauge was found to be split approximately 180 degrees in circumference at the hose fitting, and was split in two other locations. The hose was a soft, pliable rubber material, and testing revealed that it was pressure-rated at 10 psi. Oil is pumped through the line about 40 to 45 psi during normal operations. The oil pressure hose fitting on the engine was not equipped with a restricted orifice to prevent the escape of fluid in case of line failure as required by regulation.

NTSB Probable Cause Narrative

The failure of the pilot to maintain adequate airspeed while attempting to make a precautionary landing, which resulted in a stall/spin and collision with the terrain. A factor in his failure to maintain an adequate airspeed is the pilot's likely diverted attention to the oil loss problem and pending engine failure. An additional factor is the pilot/mechanic's improper installation of an unapproved oil hose, which ruptured under pressure.

Event Information

Type of Event Accident
Event Date 8/2/1999
Event Day of the Week Monday
Time of Event 1332
Event Time Zone Pacific Daylight Time
Event City JOHNSON VALLEY
Event State CALIFORNIA
Event Country --
Zipcode of the event site 92285
Event Date Year 1999
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude --
Event Location Longitude --
Event Location Airport JOHNSON VALLEY
Event Location Nearest Airport ID 6CA5
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles 1
Degrees magnetic from airport 300
Airport Elevation 3370
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1255 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 90
Weather Observation Facility ID NXP
Elevation of weather observation facility 1905
Distance of event from weather observation facility (units?) 21
Time Zone of the weather observation PDT
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) 7
Air Temperature at event time (in degrees celsius) 33
Dew Point at event time (in degress fahrenheit) 8
Wind Direction (degrees magnetic) 110
Variable Wind Indicator Unknown
Wind Speed (knots) 5
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) 6200
Intensity of Precipitation Unknown
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 1
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 1660
NTSB Notification Source --
NTSB Notification Date Aug 2 1999 12:00AM
NTSB Notification Time 1400
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record May 11 2001 4:05AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N32409
NTSB Number LAX99FA261
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 Porterfield
Aircraft Model CP-65
Aircraft Series Identifier CP-65
Aircraft Serial Number 839
Certified Max Gross Weight 1200
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 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Nov 1 1998 12:00AM
Airframe hours since last inspection 55
Airframe Hours 2807
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name LARRY TRAGER
Aircraft Owner Street Address 423 ELM STREET
Aircraft Owner City TEHACHAPI
Aircraft Owner State CA
Aircraft Owner Country
Aircraft Owner Zipcode 93561
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 Yes
Departure Airport Code 6CA5
Departure City
Departure State
Departure Country
Departure Time 1330
Departure Time Zone PDT
Destination Same as Local Flt --
Destination Airport Code TNP
Destination City TWENTY NINE PAL
Destination State CA
Destination Country
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record May 11 2001 4:05AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 9
Runway Length 2800
Runway Width 40
Sight Seeing flight No
Air Medical Flight No
Medical Flight --