Aircraft Accident/Incident Report

Minden, Nevada 89423
Thursday, July 24, 1997 17:08 PDT

NTSB Narrative Summary Released at Completion of Accident

The pilot of a glider said that as he was returning to the airport, he encountered strong turbulence and downdrafts, and concluded that he would not be able to safely reach the runway. He selected a field, and as he got closer, realized that he had too much energy for a straight-in approach and not enough for a pattern. The pilot said he then deployed some drag devices and began making S-turns. Reportedly, the glider encountered a downdraft and touched down hard with a very high sink rate. Ground witnesses reported that very gusty winds existed at the time of the landing. An FAA airworthiness inspector examined the glider and noted that no discrepancies were found.

NTSB Probable Cause Narrative

the pilot's improper planning/decision and subsequent encounter with gusty winds and strong downdrafts, which precluded reaching the airport and induced an unrecoverable high sink rate during an off-airport landing.

Event Information

Type of Event Accident
Event Date 7/24/1997
Event Day of the Week Thursday
Time of Event 1708
Event Time Zone Pacific Daylight Time
Event City MINDEN
Event State NEVADA
Event Country --
Zipcode of the event site 89423
Event Date Year 1997
Event Date Month 7
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 1656 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 350
Weather Observation Facility ID RNO
Elevation of weather observation facility 4412
Distance of event from weather observation facility (units?) 50
Time Zone of the weather observation PDT
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) 25
Dew Point at event time (in degress fahrenheit) 6
Wind Direction (degrees magnetic) 340
Variable Wind Indicator Unknown
Wind Speed (knots) 14
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 21
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) --
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) 1257
NTSB Notification Source --
NTSB Notification Date Jul 24 1997 12:00AM
NTSB Notification Time 1830
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 8 2000 12:25PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N120MJ
NTSB Number LAX97LA258
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 Centrair
Aircraft Model ASW20F
Aircraft Series Identifier ASW20F
Aircraft Serial Number 20188
Certified Max Gross Weight 1000
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 1
Number of Engines --
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Apr 25 1997 12:00AM
Airframe hours since last inspection 55
Airframe Hours 1978
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name MICHAEL I. GREEN
Aircraft Owner Street Address 117 RHEEM BLVD
Aircraft Owner City ORINDA
Aircraft Owner State CA
Aircraft Owner Country
Aircraft Owner Zipcode 94563
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 MEV
Departure City
Departure State
Departure Country
Departure Time 1332
Departure Time Zone PDT
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 Landing
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 --