Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Oakland, California 94607
Wednesday, September 10, 2008 13:50 PDT
NTSB Narrative Summary Released at Completion of Accident
During a local photo flight at an altitude of 1,500 feet mean sea level (msl), the pilot reported a decrease in engine power followed by a complete loss of engine oil pressure. The pilot determined that due to his location and altitude, he was forced to make a landing on the water. During the landing, the airplane sustained substantial damage to the horizontal stabilizers and to the bottom of the fuselage. During the post-accident investigation, it was determined that the number two and three cylinders had been replaced 137.1 flight hours prior to the accident. During the engine examinations, thermal discoloration of the crankshaft main journals and damage to various other internal components were noted. The crankshaft was fractured just forward of the number two main bearing. The fracture surfaces of the crankshaft were mechanically damaged due to rotational forces. The number two main bearings were not found in the main bearing support diameters. Several bearing fragments were found in the oil sump and on the bearing support diameter. The crankcase itself had been compromised just above the number one cylinder. A review of the maintenance logbooks noted that the engine was beyond manufacturers' recommendations for time between overhaul. Several maintenance discrepancies and non-compliance with manufacturers' recommendations were also noted.
NTSB Probable Cause Narrative
A loss of engine power while maneuvering due to the disintegration of the number two main bearing, which resulted in a fracture of the crankshaft. Contributing to the accident was inadequate maintenance.
Event Information
| Type of Event | Accident |
| Event Date | 9/10/2008 |
| Event Day of the Week | Wednesday |
| Time of Event | 1350 |
| Event Time Zone | Pacific Daylight Time |
| Event City | Oakland |
| Event State | CALIFORNIA |
| Event Country | -- |
| Zipcode of the event site | 94607 |
| Event Date Year | 2008 |
| Event Date Month | 9 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 375000N |
| Event Location Longitude | 1221848W |
| 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 | 1353 Pacific Daylight Time |
| Direction of event from weather observation facility (degrees) | 140 |
| Weather Observation Facility ID | OAK |
| Elevation of weather observation facility | 9 |
| Distance of event from weather observation facility (units?) | 8 |
| 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 | None |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 10 |
| Air Temperature at event time (in degrees celsius) | 20 |
| Dew Point at event time (in degress fahrenheit) | 12 |
| Wind Direction (degrees magnetic) | 300 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 9 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 29.84 |
| 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 | 2 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 26255 |
| NTSB Notification Source | FAA |
| NTSB Notification Date | Sep 10 2008 12:00AM |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | Oct 26 2009 5:45PM |
| User who most recently changed record | coos |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | Oakland FSDO |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N6278C |
| NTSB Number | LAX08LA292 |
| 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 | CESSNA |
| Aircraft Model | T210N |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 21063853 |
| Certified Max Gross Weight | 4000 |
| 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 | 6 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Jun 1 2008 12:00AM |
| Airframe hours since last inspection | 137 |
| Airframe Hours | 8147 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | Unknown |
| Aircraft Owner Name | JA MAR INDUSTRIES INC DBA |
| Aircraft Owner Street Address | 2220 CALLE DE LUNA |
| Aircraft Owner City | SANTA CLARA |
| Aircraft Owner State | CA |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 95054 |
| Operator is an individual? | No |
| Operator Name | JA MAR INDUSTRIES INC DBA |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | 2220 CALLE DE LUNA |
| Operator City | SANTA CLARA |
| Operator State | CA |
| Operator Country | USA |
| Operator Zip code | 95054 |
| 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) | Business |
| Second Pilot on Board | -- |
| Departure Point Same as Event | No |
| Departure Airport Code | RHV |
| Departure City | SAN JOSE |
| Departure State | CA |
| Departure Country | USA |
| Departure Time | 1320 |
| Departure Time Zone | PDT |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | -- |
| Destination City | -- |
| Destination State | -- |
| Destination Country | USA |
| Specific Phase of Flight | Maneuvering |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Oct 19 2009 3:54PM |
| User who most recently changed record | jonp |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | N/A |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |