Individually Owned: 150,657
Corporate Owned: 137,281
Sunriver Airport
Aircraft Accident/Incident Report
Sunriver, Oregon 97707
Thursday, July 28, 2005 12:15 PDT
NTSB Narrative Summary Released at Completion of Accident
According to the pilot, while on the downwind leg for landing on runway 18, the engine "backfired, ran rough and quit." During the ensuing forced landing, the airplane collided with trees and terrain short of the runway. The left outer wing sustained structural damage. During an attempted engine run following the accident, the engine could not be started, and it was determined that both sets of magneto points were not opening. Inspection of the single-drive dual magneto found that the nylon cam followers on both sets of points were worn to the point that they could no longer open the contacts. The cam followers appeared to be burned and discolored due to a lack of lubrication. The felt pads mounted on the cam followers that are normally saturated with lubricating oil were found to be very dry. The magneto manufacturer's recommended maintenance instructions call for the cam follower felt pads to be inspected for the presence of adequate lubricating oil every 100 hours time in service. According to the airplane's maintenance records the points had accumulated 372.9 hours since installation on January 1, 2001. There were no entries found in the engine logbook indicating the points had been inspected since their installation.
NTSB Probable Cause Narrative
The loss of engine power as a result of both sets of magneto points failing to open due to excessive wear of the nylon cam followers. The excessive wear of the cam followers was due to maintenance personnel's failure to follow the magneto manufacturer's recommended maintenance procedures and inspect the cam follower felt pads for adequate lubrication at 100-hour intervals. A factor was the lack of suitable terrain available for the forced landing.
Event Information
| Type of Event | Accident |
| Event Date | 7/28/2005 |
| Event Day of the Week | Thursday |
| Time of Event | 1215 |
| Event Time Zone | Pacific Daylight Time |
| Event City | Sunriver |
| Event State | OREGON |
| Event Country | -- |
| Zipcode of the event site | 97707 |
| Event Date Year | 2005 |
| Event Date Month | 7 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 435235N |
| Event Location Longitude | 1212711W |
| Event Location Airport | Sunriver |
| Event Location Nearest Airport ID | S21 |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | 0.25 |
| Degrees magnetic from airport | -- |
| Airport Elevation | 4164 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1256 Pacific Daylight Time |
| Direction of event from weather observation facility (degrees) | 45 |
| Weather Observation Facility ID | RDM |
| Elevation of weather observation facility | 3077 |
| Distance of event from weather observation facility (units?) | 26 |
| 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 | -- |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 10 |
| Air Temperature at event time (in degrees celsius) | 34 |
| Dew Point at event time (in degress fahrenheit) | -1 |
| 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) | 29.98 |
| 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 | 3 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 19426 |
| NTSB Notification Source | FAA-ROC |
| NTSB Notification Date | Jul 28 2005 12:00AM |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Mar 28 2006 1:55PM |
| User who most recently changed record | NTSB\JOHB |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | Hillsboro, Oregon |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N110MP |
| NTSB Number | SEA05LA153 |
| 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 | Mooney |
| Aircraft Model | M20J |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 24-0873 |
| Certified Max Gross Weight | 2740 |
| 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 | Retractable |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | May 1 2005 12:00AM |
| Airframe hours since last inspection | 24 |
| Airframe Hours | 2385 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | John P. Reeve |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | Rancho Murieta |
| Aircraft Owner State | CA |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 95683 |
| Operator is an individual? | No |
| 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? | -- |
| 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 | SAC |
| Departure City | SACRAMENTO |
| Departure State | CA |
| Departure Country | USA |
| Departure Time | 1000 |
| Departure Time Zone | PDT |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | S21 |
| Destination City | Sunriver |
| Destination State | OR |
| Destination Country | USA |
| Specific Phase of Flight | Approach - VFR pattern - downwind |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jan 12 2006 3:00PM |
| User who most recently changed record | STAM |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | 18 |
| Runway Length | 5455 |
| Runway Width | 70 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |