Aircraft Accident/Incident Report

Trinidad, Colorado 81082
Sunday, August 20, 2000 12:00 MDT

NTSB Narrative Summary Released at Completion of Accident

The pilot said that on departure climb out, everything appeared normal. Suddenly, at 1,000 feet agl, he reported losing all flight control. He said the amateur built experimental airplane continued to turn to the left, and he had no elevator control. The airplane gradually spiraled down until it hit the ground. Postaccident examination revealed that the left lift strut tube threaded attachment rod had broken. The kit manufacturer said that there are approximately 1,700 airplanes flying that utilize this wing attachment assembly, and the manufacturer has no record of any similar failures. The pilot said that he built the airplane in 1989, and it was substantially damaged in 1991. He said that he purchased new wings and most of the hardware was replaced new. He said that he replaced the left strut attachment bracket on the rebuilt airplane. It was not determined why the left lift strut attachment rod failed.

NTSB Probable Cause Narrative

the failure of wing lift strut attachment rod for an unknown reason, which resulted in a loss of aircraft control during initial takeoff climb.

Event Information

Type of Event Accident
Event Date 8/20/2000
Event Day of the Week Sunday
Time of Event 1200
Event Time Zone Mountain Daylight Time
Event City TRINIDAD
Event State COLORADO
Event Country --
Zipcode of the event site 81082
Event Date Year 2000
Event Date Month 8
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 1135 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 35
Weather Observation Facility ID TAD
Elevation of weather observation facility 5761
Distance of event from weather observation facility (units?) 3
Time Zone of the weather observation MDT
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) 84
Dew Point at event time (in degress fahrenheit) 45
Wind Direction (degrees magnetic) 340
Variable Wind Indicator Unknown
Wind Speed (knots) 3
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) 8517
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Serious
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
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) 10855
NTSB Notification Source FAA NW OPERATIONS CENTER
NTSB Notification Date Aug 20 2000 12:00AM
NTSB Notification Time 1215
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Nov 1 2001 7:36AM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N7081M
NTSB Number DEN00LA155
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name TRAMMELL
Aircraft Model AVID FLYER
Aircraft Series Identifier AVID FLYER
Aircraft Serial Number 871
Certified Max Gross Weight 1050
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 Annual
Date of Last Inspection Apr 15 2000 12:00AM
Airframe hours since last inspection 5
Airframe Hours 35
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name JOHN M. TRAMMELL
Aircraft Owner Street Address 1701 SAVANNAH
Aircraft Owner City TRINIDAD
Aircraft Owner State CO
Aircraft Owner Country
Aircraft Owner Zipcode 81082
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 Yes
Departure Airport Code TAD
Departure City
Departure State
Departure Country
Departure Time 1200
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 Takeoff
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Oct 17 2001 10:40AM
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 --