Reno/Stead Airport
Aircraft Accident/Incident Report

Reno, Nevada 89506
Wednesday, March 17, 2004 7:20 PST

NTSB Narrative Summary Released at Completion of Accident

The aircraft broke up in flight while the pilot was executing an aerobatic outside loop maneuver. While inverted and pushing forward on the stick to about -2.5G to start the ascending part of the maneuver, the airplane began to vibrate violently. The pilot felt the vibration in the airframe, not in the stick or the rudder. He felt the vibration for 1 to 2 seconds, followed by the left wing of the airplane detaching from the airplane's structure. During the airplane's continued disintegration, the pilot was able to release his seat belt and exit the airplane. The pilot deployed his parachute, which opened just prior to his reaching the ground. The aircraft was destroyed by a post impact ground fire. The airplane was constructed out of wood in 1975 and, according to the accident airplane's records and the pilot's statement, it had been more than 20 years since the wings had undergone any extensive inspection, repair, or rebuild with the fabric removed.

NTSB Probable Cause Narrative

Failure of the left wing spar during an aerobatic maneuver.

Event Information

Type of Event Accident
Event Date 3/17/2004
Event Day of the Week Wednesday
Time of Event 720
Event Time Zone Pacific Standard Time
Event City Reno
Event State NEVADA
Event Country --
Zipcode of the event site 89506
Event Date Year 2004
Event Date Month 3
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 394134N
Event Location Longitude 1195743W
Event Location Airport RENO/STEAD
Event Location Nearest Airport ID 4SD
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 4.5
Degrees magnetic from airport 270
Airport Elevation 5050
Weather Briefing Completeness Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 755 Pacific Standard Time
Direction of event from weather observation facility (degrees) 125
Weather Observation Facility ID RNO
Elevation of weather observation facility 4415
Distance of event from weather observation facility (units?) 14
Time Zone of the weather observation PST
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) 5
Dew Point at event time (in degress fahrenheit) -2
Wind Direction (degrees magnetic) --
Variable Wind Indicator --
Wind Speed (knots) --
Wind Velocity Indicator Calm
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.24
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Serious
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
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) 17983
NTSB Notification Source FAA
NTSB Notification Date Mar 17 2004 12:00AM
NTSB Notification Time 935
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Jul 7 2005 10:33AM
User who most recently changed record NTSB\JOHB
Basic weather conditions Visual Meteorological Cond
FAA District Office FAA-FSDO- Reno

Aircraft Involved

Aircraft #1

Aircraft Registration Number N41BB
NTSB Number LAX04LA163
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 Ground
Aircraft Explosion None
Aircraft Manufacturer's Full Name Wallace
Aircraft Model Skybolt
Aircraft Series Identifier --
Aircraft Serial Number 1
Certified Max Gross Weight 2150
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 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Conditional
Date of Last Inspection Jun 1 2003 12:00AM
Airframe hours since last inspection 65
Airframe Hours 815
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Ross W Loudon Trustee
Aircraft Owner Street Address --
Aircraft Owner City Reno
Aircraft Owner State NV
Aircraft Owner Country USA
Aircraft Owner Zipcode 89509
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 --
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 Yes
Departure Airport Code 4SD
Departure City Reno
Departure State NV
Departure Country USA
Departure Time 645
Departure Time Zone PST
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? No
Evacuation occurred No
Date of most recent change to record Apr 23 2005 2:32PM
User who most recently changed record COOS
Since inspection or accident Time of Accident
Event Location Runway Number and Location NA
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --