Aircraft Accident/Incident Report

Paulden, Arizona 86334
Wednesday, March 18, 2009 17:50 MST

NTSB Narrative Summary Released at Completion of Accident

A witness observed the accident airplane performing turns to the left and right and trailing white smoke. The witness stated that the airplane was about "tree-top level" when it pitched down and impacted the ground. Examination by a Federal Aviation Administration inspector revealed oil along the bottom side of the fuselage and on the tailwheel. A friend of the pilot, who was also an aircraft mechanic, reported that prior to the accident flight he and the pilot found an oil leak originating from a stainless steel high-pressure oil line from the propeller governor to the forward area of the engine crankcase. The mechanic stated that he had removed the oil line and the pilot had it repaired by a local weld shop. After reinstallation of the oil line, the mechanic conducted an engine run and did not observe any oil leaks originating from the oil line. The pilot then decided to fly the airplane around the area on a test flight. According to the mechanic, as the airplane departed the runway, he observed a trail of white smoke originating from the airplane. Despite two requests by the mechanic to return to the airport, the pilot stated that "everything was fine" and he was going to continue to a nearby airport. No further radio communication was received from the pilot. Examination of the engine revealed that the stainless steel high pressure oil line from the propeller governor was in place. The oil line exhibited a repair weld on the forward area of the line, and corresponding wear marks were observed on the engine crankcase. The oil line was removed and the forward end of the oil line was capped off using a bolt. The area of the weld was placed under water and compressed air pressure was applied to the opposite end of the oil line. A leak was observed originating from the area of the weld. Partial disassembly of the engine revealed that the number two connecting rod was separated from the crankshaft and exhibited signatures consistent with oil starvation.

NTSB Probable Cause Narrative

A total loss of engine power due to oil starvation as a result of a leak from the inadequate weld repair of a high-pressure oil line. Also causal was the pilot's failure to maintain adequate airspeed while maneuvering that resulted in a stall during an attempted off-field landing and the pilot's decision to continue flight with a known discrepancy.

Event Information

Type of Event Accident
Event Date 3/18/2009
Event Day of the Week Wednesday
Time of Event 1750
Event Time Zone Mountain Standard Time
Event City Paulden
Event State ARIZONA
Event Country --
Zipcode of the event site 86334
Event Date Year 2009
Event Date Month 3
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 345551N
Event Location Longitude 1123045W
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 --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1753 Mountain Standard Time
Direction of event from weather observation facility (degrees) 160
Weather Observation Facility ID PRC
Elevation of weather observation facility 5045
Distance of event from weather observation facility (units?) 13
Time Zone of the weather observation MST
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) 21
Dew Point at event time (in degress fahrenheit) -8
Wind Direction (degrees magnetic) 250
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 8
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.1
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
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) 25674
NTSB Notification Source FAA Operations Center
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Jul 2 2009 3:26PM
User who most recently changed record stam
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N6383W
NTSB Number WPR09LA153
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 HOWES
Aircraft Model RV-6
Aircraft Series Identifier --
Aircraft Serial Number 22415
Certified Max Gross Weight 1600
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? Yes
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 --
Airframe Hours --
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type Unknown
Aircraft Owner Name CURTIS L JARVIS
Aircraft Owner Street Address --
Aircraft Owner City HOUSTON
Aircraft Owner State TX
Aircraft Owner Country USA
Aircraft Owner Zipcode 77240-0938
Operator is an individual? No
Operator Name CURTIS L JARVIS
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City HOUSTON
Operator State TX
Operator Country USA
Operator Zip code 77240-0938
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? No
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 No
Departure Point Same as Event No
Departure Airport Code SEZ
Departure City Sedona
Departure State AZ
Departure Country USA
Departure Time 1740
Departure Time Zone MST
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code AZ27
Destination City Paulden
Destination State AZ
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jul 2 2009 3:25PM
User who most recently changed record stam
Since inspection or accident --
Event Location Runway Number and Location N/A
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --