Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Concord, California 94520
Saturday, January 2, 1993 13:45 PST
NTSB Narrative Summary Released at Completion of Accident
DURING AN IFR FLIGHT AT ABOUT 11,000 FEET MSL, THE AIRPLANE'S ENGINE BEGAN TO RUN ROUGH AND THE ENGINE OIL PRESSURE DROPPED TO ZERO. THE PILOT ALSO SAID HE SMELLED SOMETHING THAT WAS BURNING. THE PILOT ENTERED A DESCENT AND REQUESTED VECTORS TO THE NEAREST AIRPORT. WHILE ON THE VECTOR, THE ENGINE BEGAN TO RUN ROUGHER AND THE BURNING SMELL BECAME STRONGER. THE PILOT SHUT DOWN THE ENGINE AND ENTERED A POWER OFF FORCED LANDING. HE BROKE OUT OF THE CLOUDS AND DETERMINED THAT HE COULD NOT GLIDE TO THE AIRPORT. HE PERFORMED A LANDING TO THE ONLY AVAILABLE AREA. DURING TOUCHDOWN, THE AIRPLANE COLLIDED WITH POSTS. AN FAA SAFETY INSPECTOR EXAMINED THE ENGINE. HE DETERMINED THAT 1 OF THE 4 BOLTS USED TO BOLT THE ENGINE OIL PUMP COVER TO THE CRANKCASE WAS MISSING. A DAMAGED BOLT WAS FOUND IN THE ENGINE'S CAMSHAFT GEAR. THE TAB WASHERS USED TO LOCK THE OIL PUMP COVER BOLTS HAD THEIR SINGLE TAB BENT DOWNWARD. THE TAB WASHERS' TWIN TABS ON THE 3 REMAINING BOLTS WERE POINTED STRAIGHT OUT. THEY APPEARED TO HAVE NEVER BEEN BENT INTO PLACE AFTER THE BOLTS WERE TIGHTENED. IMPROPER INSTALLATION OF THE WASHERS RESULTED IN ONE BOLT FALLING OFF AND BEING INGESTED THROUGH VARIOUS DRIVE GEARS. THE ENGINE WAS OVERHAULED BY THE MANUFACTURER 515 HOURS PRIOR TO THE ACCIDENT.
NTSB Probable Cause Narrative
THE ENGINE MANUFACTURER FAILING TO PROPERLY INSTALL TAB WASHERS DURING OVERHAUL WHICH RESULTED IN ONE BOLT BECOMING LOOSE AND BEING INGESTED THROUGH VARIOUS ENGINE GEAR DRIVES. THE INGESTION AND LOOSE OIL PUMP COVER RESULTED IN THE ENGINE RUNNING ROUGH AND A BURNING SMELL WHICH CAUSED THE PILOT TO HAVE TO SHUT DOWN THE ENGINE.
Event Information
| Type of Event | Accident |
| Event Date | 1/2/1993 |
| Event Day of the Week | Saturday |
| Time of Event | 1345 |
| Event Time Zone | Pacific Standard Time |
| Event City | CONCORD |
| Event State | CALIFORNIA |
| Event Country | -- |
| Zipcode of the event site | 94520 |
| Event Date Year | 1993 |
| Event Date Month | 1 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| 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 | 0 |
| Degrees magnetic from airport | 0 |
| Airport Elevation | -- |
| Weather Briefing Completeness | Unknown |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1350 Pacific Standard Time |
| Direction of event from weather observation facility (degrees) | 10 |
| Weather Observation Facility ID | CCR |
| Elevation of weather observation facility | 23 |
| Distance of event from weather observation facility (units?) | 1 |
| Time Zone of the weather observation | PST |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 5000 |
| Lowest Non-Ceiling Height | 5000 |
| Sky/Lowest/Cloud Conditions | Unknown |
| Sky Condition for Lowest Ceiling | Broken |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 30 |
| Air Temperature at event time (in degrees celsius) | 9 |
| Dew Point at event time (in degress fahrenheit) | 1 |
| Wind Direction (degrees magnetic) | 350 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 4 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Unknown |
| 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) | 4 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Jan 2 1993 12:00AM |
| NTSB Notification Time | 1630 |
| Fiche Number and/or location -used to find docket information | 47673 |
| Date of most recent change to record | Dec 11 2000 1:07PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N2008M |
| NTSB Number | LAX93LA088 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | -- |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | PIPER |
| Aircraft Model | PA-28R-201T |
| Aircraft Series Identifier | PA-28R-201 |
| Aircraft Serial Number | 28R-7803099 |
| Certified Max Gross Weight | 3000 |
| 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 | 4 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Sep 30 1992 12:00AM |
| Airframe hours since last inspection | 50 |
| Airframe Hours | 2227 |
| ELT Installed | Yes |
| ELT Activated | Yes |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | RICHARD TALLEY/LARRY SHATTUCK |
| Aircraft Owner Street Address | 277 CASCADE DRIVE |
| Aircraft Owner City | MILL VALLEY |
| Aircraft Owner State | CA |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 94941 |
| Operator is an individual? | -- |
| Operator Name | RICHARD TALLEY/LARRY SHATTUCK |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | 277 CASCADE DRIVE |
| Operator City | MILL VALLEY |
| Operator State | CA |
| Operator Country | |
| Operator Zip code | 94941 |
| 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 | No |
| Departure Airport Code | O56 |
| Departure City | NAVATO |
| Departure State | CA |
| Departure Country | |
| Departure Time | 1317 |
| Departure Time Zone | PST |
| Destination Same as Local Flt | -- |
| Destination Airport Code | CCB |
| Destination City | UPLAND |
| Destination State | CA |
| Destination Country | |
| Specific Phase of Flight | Cruise |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jan 2 2001 10:34AM |
| User who most recently changed record | dbo |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 0 |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |