Aircraft Accident/Incident Report

Salt Lake City, Utah 84116
Wednesday, June 8, 1994 9:30 MDT

NTSB Narrative Summary Released at Completion of Accident

AT THE START OF AN AEROBATIC MANEUVER, THE WINGS WERE OBSERVED FLUTTERING JUST PRIOR TO THE SEPARATION OF THE RIGHT WING. DURING THE POST CRASH INSPECTION, EVIDENCE WAS FOUND TO INDICATE AILERON FLUTTER. THE AILERONS WERE ALSO FOUND TO BE OUT OF BALANCE.

NTSB Probable Cause Narrative

IMPROPER BALANCING OF THE AILERONS RESULTING IN AILERON FLUTTER.

Event Information

Type of Event Accident
Event Date 6/8/1994
Event Day of the Week Wednesday
Time of Event 930
Event Time Zone Mountain Daylight Time
Event City SALT LAKE CITY
Event State UTAH
Event Country --
Zipcode of the event site 84116
Event Date Year 1994
Event Date Month 6
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 950 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 25
Weather Observation Facility ID SLC
Elevation of weather observation facility 4227
Distance of event from weather observation facility (units?) 19
Time Zone of the weather observation MDT
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 9000
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 15
Air Temperature at event time (in degrees celsius) 16
Dew Point at event time (in degress fahrenheit) 1
Wind Direction (degrees magnetic) 340
Variable Wind Indicator Unknown
Wind Speed (knots) 4
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
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) 615
NTSB Notification Source --
NTSB Notification Date Jun 8 1994 12:00AM
NTSB Notification Time 850
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 6 2000 11:31AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N25074
NTSB Number SEA94LA142
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 1ST FTR GP
Aircraft Model FOCKE-WULF 190
Aircraft Series Identifier FOCKE-WULF
Aircraft Serial Number 75
Certified Max Gross Weight 850
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 Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Jun 28 1993 12:00AM
Airframe hours since last inspection --
Airframe Hours --
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name CLARK, KEITH J.
Aircraft Owner Street Address P.O. BOX 356
Aircraft Owner City PRICE
Aircraft Owner State UT
Aircraft Owner Country
Aircraft Owner Zipcode 84501
Operator is an individual? --
Operator Name PETERSON, JEFFREY G.
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 6129 S. AZURE MEADOW WAY
Operator City SALT LAKE CITY
Operator State UT
Operator Country
Operator Zip code 84118
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 Yes
Departure Airport Code
Departure City
Departure State
Departure Country
Departure Time 915
Departure Time Zone MDT
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 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 --