Aircraft Accident/Incident Report

Antioch, California 94509
Tuesady, June 18, 2002 12:20 PDT

NTSB Narrative Summary Released at Completion of Accident

A witness located north east of the accident site, observed the airplane "starting a vertical climb, slowly rolling over and diving straight down." The witness stated that the airplane "never appeared to be trying to pull out of the dive." Subsequently, the witness lost sight of the airplane behind a mountain, and heard the "sound of impact." Examination of the wreckage revealed a screwdriver located in the aft section of the fuselage. Multiple witness marks were observed around the elevator bellcrank housing, and numerous gouges on the screwdriver. When the screwdriver was placed between the elevator bellcrank and housing, and the bellcrank moved by hand, the elevator control was restricted to the neutral position. The energy dispersive x-ray spectroscopy analysis performed on the screwdriver conclusively demonstrated that the screwdriver was lodged between the various structural items.

NTSB Probable Cause Narrative

The loss of control while performing acrobatic maneuvers due to a screwdriver restricting elevator travel. A contributing factor was the airplane's fuselage not being sterile of foreign objects.

Event Information

Type of Event Accident
Event Date 6/18/2002
Event Day of the Week Tuesday
Time of Event 1220
Event Time Zone Pacific Daylight Time
Event City Antioch
Event State CALIFORNIA
Event Country --
Zipcode of the event site 94509
Event Date Year 2002
Event Date Month 6
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 375609N
Event Location Longitude 1214600W
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 Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1253 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 270
Weather Observation Facility ID CCR
Elevation of weather observation facility 26
Distance of event from weather observation facility (units?) 16
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) 33
Dew Point at event time (in degress fahrenheit) 9
Wind Direction (degrees magnetic) 260
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 8
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.79
Density Altitude (feet) 2627
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal 1
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 15200
NTSB Notification Source FAA
NTSB Notification Date Jun 18 2002 12:00AM
NTSB Notification Time 1315
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Mar 30 2004 8:14AM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office Oakland, California

Aircraft Involved

Aircraft #1

Aircraft Registration Number N644LL
NTSB Number LAX02LA202
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Destroyed
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Yakovlev
Aircraft Model YAK 52
Aircraft Series Identifier --
Aircraft Serial Number 833310
Certified Max Gross Weight 2899
Aircraft Category Airplane
Aircraft Registration Class Unknown
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 2
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Jul 15 2001 12:00AM
Airframe hours since last inspection 197.2
Airframe Hours 1164.1
ELT Installed No
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Melinda M. Whiteway
Aircraft Owner Street Address 2409 Pine Knoll Drive #7
Aircraft Owner City Walnut Creek
Aircraft Owner State CA
Aircraft Owner Country USA
Aircraft Owner Zipcode 74595
Operator is an individual? No
Operator Name Raymond S. Puddy
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 190 Oak Park Lane
Operator City Pleasant Hill
Operator State CA
Operator Country USA
Operator Zip code 94523
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 --
Departure City Livermore
Departure State CA
Departure Country USA
Departure Time 1005
Departure Time Zone PDT
Destination Same as Local Flt --
Destination Airport Code CCR
Destination City Concord
Destination State CA
Destination Country USA
Specific Phase of Flight Maneuvering
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record Jan 31 2004 12:35PM
User who most recently changed record CASH
Since inspection or accident Time of Accident
Event Location Runway Number and Location --
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --