Ravalli County Airport
Aircraft Accident/Incident Report

Hamilton, Montana 59840
Tuesady, August 19, 1997 16:30 MDT

NTSB Narrative Summary Released at Completion of Accident

Eyewitnesses observed the glider turn off the runway at an excessive speed after landing. The glider then impacted a taxiway sign near the turnoff. The pilot stated that a gust of wind 'slammed down' the left wing of the glider onto the sign. The eyewitnesses reported that the winds were light and variable with no gusts or crosswinds.

NTSB Probable Cause Narrative

The pilot's excessive speed taxispeed and failure to maintain wing clearance from a taxiway sign.

Event Information

Type of Event Accident
Event Date 8/19/1997
Event Day of the Week Tuesday
Time of Event 1630
Event Time Zone Mountain Daylight Time
Event City HAMILTON
Event State MONTANA
Event Country --
Zipcode of the event site 59840
Event Date Year 1997
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport RAVALLI COUNTY AIRPORT
Event Location Nearest Airport ID 6S5
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation 3638
Weather Briefing Completeness Unknown
Investigator's weather source Pilot
Time of the weather observation 0
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
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) 50
Air Temperature at event time (in degrees celsius) 27
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 330
Variable Wind Indicator Unknown
Wind Speed (knots) 8
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 12
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 1044
NTSB Notification Source --
NTSB Notification Date Aug 19 1997 12:00AM
NTSB Notification Time 2000
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 8 2000 12:30PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N52AS
NTSB Number SEA97LA194
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 Let
Aircraft Model BLANIK L-13
Aircraft Series Identifier BLANIK L-1
Aircraft Serial Number 027056
Certified Max Gross Weight 711
Aircraft Category Glider
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 2
Number of Engines --
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Aug 12 1996 12:00AM
Airframe hours since last inspection 90
Airframe Hours 90
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name HELLGATE SOARING SOCIETY
Aircraft Owner Street Address 2019 WEST SUSSEX AVE.
Aircraft Owner City MISSOULA
Aircraft Owner State MT
Aircraft Owner Country
Aircraft Owner Zipcode 59802
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 6S5
Departure City
Departure State
Departure Country
Departure Time 1545
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 --
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 34
Runway Length 4200
Runway Width 75
Sight Seeing flight No
Air Medical Flight No
Medical Flight --