Aircraft Accident/Incident Report

Marion, Ohio 43302
Sunday, May 4, 1997 12:40 EDT

NTSB Narrative Summary Released at Completion of Accident

With the owner at the flight controls, the experimental homebuilt glider was under tow to take it to another airport. Witnesses reported that about 1 minute after departure, the glider entered into a series of divergent pitch oscillations which terminated in a near vertical dive into a field. The tow rope separated during the oscillations. According to an FAA report, '...The rod end of the elevator/aileron control stick was found pulled out of push rod. The meal casing that the rod end fitted into was crushed. The rod end contained 1 fastener (rivet) core with signs of fretting and scoring, with the remaining attaching fastener core missing....' The last annual inspection was performed in August 1995. The glider was operated on an FAA special flight permit, which required either an inspection by an aircraft mechanic or a repair shop before the flight. No record of the inspection was found by the FAA inspectors.

NTSB Probable Cause Narrative

Disconnection of the elevator control rod which resulted in the loss of elevator control. A factor was failure to complete the required maintenance inspection.

Event Information

Type of Event Accident
Event Date 5/4/1997
Event Day of the Week Sunday
Time of Event 1240
Event Time Zone Eastern Daylight Time
Event City MARION
Event State OHIO
Event Country --
Zipcode of the event site 43302
Event Date Year 1997
Event Date Month 5
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 Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1254 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 70
Weather Observation Facility ID MFD
Elevation of weather observation facility 1297
Distance of event from weather observation facility (units?) 28
Time Zone of the weather observation EDT
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 4400
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) 10
Air Temperature at event time (in degrees celsius) 11
Dew Point at event time (in degress fahrenheit) 2
Wind Direction (degrees magnetic) 270
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) 797
NTSB Notification Source --
NTSB Notification Date May 4 1997 12:00AM
NTSB Notification Time 1500
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Feb 21 2002 3:18PM
User who most recently changed record NTSB\GIUV
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N8711R
NTSB Number NYC97LA085
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 Marsh-Turner
Aircraft Model BG-12A
Aircraft Series Identifier BG-12A
Aircraft Serial Number 12035
Certified Max Gross Weight 606
Aircraft Category Glider
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 --
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Aug 24 1995 12:00AM
Airframe hours since last inspection 0
Airframe Hours 988
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name MARK A. SAVAGE
Aircraft Owner Street Address P.O. BOX 218147
Aircraft Owner City COLUMBUS
Aircraft Owner State OH
Aircraft Owner Country
Aircraft Owner Zipcode 43221
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) Ferry
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code MNN
Departure City
Departure State
Departure Country
Departure Time 1239
Departure Time Zone EDT
Destination Same as Local Flt --
Destination Airport Code CMH
Destination City COLUMBUS
Destination State OH
Destination Country
Specific Phase of Flight Climb
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 --