Individually Owned: 150,657
Corporate Owned: 137,281
Winnemucca Muni Airport
Aircraft Accident/Incident Report
Winnemucca, Nevada 89445
Friday, July 21, 2000 13:20 PDT
NTSB Narrative Summary Released at Completion of Accident
After losing engine power, the amateur-built airplane encountered soft soil and nosed over after overrunning the runway during a forced landing at the airport. The flight left the San Francisco Bay area earlier in the day and was en route ultimately to Oshkosh, Wisconsin. In cruise the pilot saw that the engine oil temperature was nearing the upper limit and landed at the airport for it to cool off. After about an hour on the ground, the pilot performed a detailed preflight inspection and run-up, with no abnormalities detected. The pilot then departed for the next en route stop. About 10 minutes after departure, the engine oil temperature climbed once more to the red line limit and the pilot decided to turn around. Shortly thereafter, the oil temperature exceeded the red line limit and the engine began to lose power. The pilot reduced the throttle and set up for a landing on a highway and the engine power partially returned. The pilot then attempted to continue to the airport; however, the engine lost power short of the facility. The pilot said she was able to reach the runway, but was too low to make any traffic pattern maneuvers, and too high to land normally. The airplane touched down slightly fast near the halfway point on the runway and was unable to stop prior to overrunning the pavement end. The airplane encountered soft, sandy soil and nosed over. Disassembly of the engine found that the vernatherm was not installed, allowing the oil supply to bypass the oil cooler. The records disclosed that the engine was built-up about 90 hours prior to the accident by a firm which specializes in performance improvement rebuilds for the experimental aircraft market. The engine is a basic Lycoming IO-360 with several modifications for power improvement.
NTSB Probable Cause Narrative
A loss of power due to overheating resulting from the failure of the engine build-up facility to install a vernatherm.
Event Information
| Type of Event | Accident |
| Event Date | 7/21/2000 |
| Event Day of the Week | Friday |
| Time of Event | 1320 |
| Event Time Zone | Pacific Daylight Time |
| Event City | WINNEMUCCA |
| Event State | NEVADA |
| Event Country | -- |
| Zipcode of the event site | 89445 |
| Event Date Year | 2000 |
| Event Date Month | 7 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | -- |
| Event Location Longitude | -- |
| Event Location Airport | WINNEMUCCA MUNI |
| Event Location Nearest Airport ID | WMC |
| Indicates whether the acc/inc occurred off or on an airport | On Airport |
| Distance from airport in statute miles | -- |
| Degrees magnetic from airport | -- |
| Airport Elevation | 4308 |
| Weather Briefing Completeness | Unknown |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1356 Pacific Daylight Time |
| Direction of event from weather observation facility (degrees) | 0 |
| Weather Observation Facility ID | WMC |
| Elevation of weather observation facility | 1486 |
| Distance of event from weather observation facility (units?) | 0 |
| 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 | 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) | 92 |
| Dew Point at event time (in degress fahrenheit) | 37 |
| Wind Direction (degrees magnetic) | 250 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 9 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 30 |
| 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 | 1 |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 1 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 10553 |
| NTSB Notification Source | FAA |
| NTSB Notification Date | Jul 21 2000 12:00AM |
| NTSB Notification Time | 1430 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Sep 26 2001 10:21AM |
| User who most recently changed record | NTSB\MONR |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N64ME |
| NTSB Number | LAX00LA275 |
| 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 | Steel |
| Aircraft Model | RANS RV-6 |
| Aircraft Series Identifier | RANS RV-6 |
| Aircraft Serial Number | MS-1 |
| Certified Max Gross Weight | 2100 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | U.S. Registered/U.S. Soil |
| 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 | Annual |
| Date of Last Inspection | Oct 30 1999 12:00AM |
| Airframe hours since last inspection | 90 |
| Airframe Hours | 90 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | MARY B. STEEL |
| Aircraft Owner Street Address | ON FILE |
| Aircraft Owner City | PLEASANTON |
| Aircraft Owner State | CA |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 94566 |
| 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 | WMC |
| Departure City | |
| Departure State | |
| Departure Country | |
| Departure Time | 1430 |
| Departure Time Zone | PDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | EKO |
| Destination City | ELKO |
| Destination State | NV |
| Destination Country | |
| Specific Phase of Flight | Cruise |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Sep 2 2001 4:00AM |
| User who most recently changed record | dbo |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 14 |
| Runway Length | 7000 |
| Runway Width | 75 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |