Aircraft Accident/Incident Report

Eastford, Connecticut 06242
Sunday, April 25, 1999 13:00 EDT

NTSB Narrative Summary Released at Completion of Accident

After having breakfast with a friend, the pilot departed. No one else reported seeing him or the airplane until a witness, approximately 50 yards from the accident site, saw the airplane a little over tree top level. While staying in the vicinity of the accident site, the airplane conducted several aerobatic maneuvers. Then, while in a steep turn to the left, the right wing separated, and then the left. The engine continued to run until ground impact. Examination of fractures surfaces on the spar-box revealed cold welds, and corrosion.

NTSB Probable Cause Narrative

Inadequate welding of the airplane's spar-box by the owner/builder, which resulted in a total spar-box failure in-flight. A factor in the accident was the pilot's decision to perform aerobatics.

Event Information

Type of Event Accident
Event Date 4/25/1999
Event Day of the Week Sunday
Time of Event 1300
Event Time Zone Eastern Daylight Time
Event City EASTFORD
Event State CONNECTICUT
Event Country --
Zipcode of the event site 06242
Event Date Year 1999
Event Date Month 4
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 --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1251 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 275
Weather Observation Facility ID BDL
Elevation of weather observation facility 190
Distance of event from weather observation facility (units?) 32
Time Zone of the weather observation EDT
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) 0
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 7
Dew Point at event time (in degress fahrenheit) -10
Wind Direction (degrees magnetic) 330
Variable Wind Indicator Unknown
Wind Speed (knots) 9
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
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 Fatal
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
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) 472
NTSB Notification Source --
NTSB Notification Date Apr 25 1999 12:00AM
NTSB Notification Time 1330
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 12 2000 11:30AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N56RA
NTSB Number NYC99FA097
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 Ives
Aircraft Model SONERAI II-L
Aircraft Series Identifier SONERAI II
Aircraft Serial Number 1108
Certified Max Gross Weight 950
Aircraft Category Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? Yes
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 Annual
Date of Last Inspection May 1 1999 12:00AM
Airframe hours since last inspection 28
Airframe Hours 181
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name RAYMOND IVES
Aircraft Owner Street Address 151 RAGGED HILL RD
Aircraft Owner City POMFRET CENTER
Aircraft Owner State CT
Aircraft Owner Country
Aircraft Owner Zipcode 06259
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 FIT
Departure City FITCHBURG
Departure State MA
Departure Country
Departure Time 1230
Departure Time Zone EDT
Destination Same as Local Flt --
Destination Airport Code IJD
Destination City WILLIMANTIC
Destination State CT
Destination Country
Specific Phase of Flight Maneuvering
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 --