Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Yuba City, California 95993
Saturday, April 30, 2005 9:30 PDT
NTSB Narrative Summary Released at Completion of Accident
During the takeoff initial climb, the pilot heard a loud bang followed by a partial loss of engine power, and made an emergency landing on a dry rice field. The airplane landed hard, sheared off the landing gear, and tumbled before coming to rest on its belly. The post accident engine inspection revealed that the number 7 cylinder was cracked along the cylinder fins and around the top and bottom spark plug holes. The cylinder was removed revealing a crack along the inside portion of the combustion chamber of the cylinder head from spark plug hole to spark plug hole in-between the intake and exhaust valves. The engine logbooks entries did not show removal of the number 7 cylinder at any time between the last overhaul in 1999 and the date of the accident. The last inspection took place 5 months prior to the accident. The reasons for the cracks were not determined.
NTSB Probable Cause Narrative
a partial loss of engine power due to multiple cracks in the number 7 cylinder. The reasons for the cracks were not determined
Event Information
| Type of Event | Accident |
| Event Date | 4/30/2005 |
| Event Day of the Week | Saturday |
| Time of Event | 930 |
| Event Time Zone | Pacific Daylight Time |
| Event City | Yuba City |
| Event State | CALIFORNIA |
| Event Country | -- |
| Zipcode of the event site | 95993 |
| Event Date Year | 2005 |
| Event Date Month | 4 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 390300N |
| Event Location Longitude | 1214400W |
| 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 | 953 Pacific Daylight Time |
| Direction of event from weather observation facility (degrees) | 270 |
| Weather Observation Facility ID | MYS |
| Elevation of weather observation facility | 62 |
| Distance of event from weather observation facility (units?) | 7 |
| 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) | 7 |
| Air Temperature at event time (in degrees celsius) | 23 |
| Dew Point at event time (in degress fahrenheit) | 11 |
| Wind Direction (degrees magnetic) | -- |
| Variable Wind Indicator | Variable |
| Wind Speed (knots) | 5 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Gusting |
| Wind Gust (knots) | 9 |
| Altimeter Setting at event time (in. Hg) | 29.95 |
| 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 | 1 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 20175 |
| NTSB Notification Source | FAA |
| NTSB Notification Date | Apr 30 2005 12:00AM |
| NTSB Notification Time | 1040 |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Aug 29 2006 3:49PM |
| User who most recently changed record | NTSB\JOHB |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | WP-SAC-FSDO |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N5304 |
| NTSB Number | LAX05LA152 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 137: Agricultural |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | No |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Grumman |
| Aircraft Model | G-164A |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 593 |
| Certified Max Gross Weight | 4500 |
| 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 | 1 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | 100 Hour |
| Date of Last Inspection | Nov 1 2004 12:00AM |
| Airframe hours since last inspection | 60 |
| Airframe Hours | 10020 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | Twin Cities Aviation, LLC |
| Aircraft Owner Street Address | 94 2nd Street |
| Aircraft Owner City | Yuba City |
| Aircraft Owner State | CA |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 95991 |
| 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 | V25G |
| Owner has at least one certificate | -- |
| Other Operator of large aircraft? | -- |
| Certified for Part 133 or 137 Operation | Agriculture |
| 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) | Aerial Application |
| Second Pilot on Board | No |
| Departure Point Same as Event | Yes |
| Departure Airport Code | -- |
| Departure City | Yuba City |
| Departure State | CA |
| Departure Country | USA |
| Departure Time | 715 |
| 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 | -- |
| Specific Phase of Flight | Takeoff - initial climb |
| Report sent to ICAO? | No |
| Evacuation occurred | No |
| Date of most recent change to record | Jun 2 2006 6:01PM |
| User who most recently changed record | COOS |
| Since inspection or accident | Last Inspection |
| Event Location Runway Number and Location | NA |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |