Individually Owned: 150,657
Corporate Owned: 137,281
Oakland Intl Airport
Aircraft Accident/Incident Report
Oakland, California 94614
Friday, April 30, 1993 17:30 PDT
NTSB Narrative Summary Released at Completion of Accident
SHORTLY AFTER DEPARTING A LOCAL AIRPORT THE AIRPLANE SUSTAINED A TOTAL LOSS OF POWER AND SUBSEQUENTLY CRASHED IN A RESIDENTIAL SECTION. THE PILOT RECENTLY PURCHASED THE AIRPLANE. DURING THE THE PRE-BUY INSPECTION AT A MIDWEST FACILITY, THE OIL FILTER CHECK AND THE OIL ANALYSIS REVEALED THE PRESENCE OF METAL PARTICLES. THE BROKER ADVISED THE PILOT NOT TO FLY THE AIRPLANE UNTIL THE ENGINE WAS OVERHAULED OR EXCHANGED. THE PILOT SETTLED FOR A PRICE REDUCTION, PURCHASED THE AIRPLANE, AND RETURNED IT TO NORTHERN CALIFORNIA. THE PILOT CONTINUED TO FLY THE AIRPLANE AND ACCRUED 22.9 HOURS AT THE TIME OF THE ACCIDENT. THE POST ACCIDENT ENGINE EXAMINATION DISCLOSED THE CRANKSHAFT FAILED IN FATIGUE AT THE NO. 2 JOURNAL WHERE IT EXITS THE NO. 2 MAIN BEARING. METALLURGICAL EXAMINATION REVEALED THE FATIGUE INITIATED DUE TO IMPROPER TORQUE OF THE THRU-BOLTS. THE AIRFRAME AND ENGINE HAD ACCRUED 937.4 TOTAL HOURS. THE ENGINE WAS OVERHAULED DUE TO A PROPELLER STRIKE WHEN IT HAD ACCRUED 522.5 HOURS.
NTSB Probable Cause Narrative
the pilot's poor decision to continue flying the airplane with a known deficiency and the poorly performed major overhaul of the engine. The failed crankshaft due to fatigue are factors in this accident.
Event Information
| Type of Event | Accident |
| Event Date | 4/30/1993 |
| Event Day of the Week | Friday |
| Time of Event | 1730 |
| Event Time Zone | Pacific Daylight Time |
| Event City | OAKLAND |
| Event State | CALIFORNIA |
| Event Country | -- |
| Zipcode of the event site | 94614 |
| Event Date Year | 1993 |
| Event Date Month | 4 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | OAKLAND INTL AIRPORT |
| Event Location Nearest Airport ID | OAK |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | 2 |
| Degrees magnetic from airport | 270 |
| Airport Elevation | 6 |
| Weather Briefing Completeness | Not pertinent |
| Investigator's weather source | Unknown |
| Time of the weather observation | 1645 Pacific Daylight Time |
| Direction of event from weather observation facility (degrees) | 270 |
| Weather Observation Facility ID | OAK |
| Elevation of weather observation facility | 6 |
| Distance of event from weather observation facility (units?) | 2 |
| 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) | -- |
| Visibility (Statute Miles) | 15 |
| Air Temperature at event time (in degrees celsius) | 19 |
| Dew Point at event time (in degress fahrenheit) | 13 |
| Wind Direction (degrees magnetic) | 240 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 12 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 29 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | Unknown |
| METAR weather report | -- |
| Event Highest Injury | Serious |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | -- |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | 1 |
| Injury Total All | 1 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 1038 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Apr 30 1993 12:00AM |
| NTSB Notification Time | 1800 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Dec 11 2000 1:14PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N731HP |
| NTSB Number | LAX93LA194 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | -- |
| Damage | Destroyed |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | CESSNA |
| Aircraft Model | P210N |
| Aircraft Series Identifier | P210N |
| Aircraft Serial Number | P21000463 |
| Certified Max Gross Weight | 4000 |
| 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 | 6 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Apr 24 1992 12:00AM |
| Airframe hours since last inspection | 64 |
| Airframe Hours | 937 |
| ELT Installed | Yes |
| ELT Activated | Yes |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | HUMBOLDT LEASING GROUP |
| Aircraft Owner Street Address | ORDWAY BLDG, SUITE 701 |
| Aircraft Owner City | OAKLAND |
| Aircraft Owner State | CA |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 94612 |
| 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 | No |
| Departure Airport Code | HWD |
| Departure City | HAYWARD |
| Departure State | CA |
| Departure Country | |
| Departure Time | 1725 |
| Departure Time Zone | PDT |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | |
| Destination City | |
| Destination State | |
| Destination Country | |
| Specific Phase of Flight | Descent |
| 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 | -- |