Aircraft Accident/Incident Report

Brackettville, Texas 78801
Saturday, August 9, 2008 15:32 CDT

NTSB Narrative Summary Released at Completion of Accident

According to the pilot of N110RG, he was stabilized in a right 55 degree bank and had completed three turns when he heard a loud bang and immediately "lost control." The right wing dropped, the glider rolled to the right, and went inverted. The pilot of N110RG exited the glider and deployed his parachute. During the egress he was seriously injured. According to the pilot of N777UN, he had observed two gliders in the thermal in front of him and entered the thermal underneath them. After two turns in the thermal, he lost sight of the two gliders and collided, shortly thereafter, with N110RG. His left wing and winglet impacted the right wing of the other glider. The pilot of N777UN landed uneventfully. N110RG was destroyed and N777UN sustained minor damage. The damage to the right wing, sustained during the collision, rendered N110RG uncontrollable. Soaring procedure recommend that the pilot exit a thermal if visual contact is lost with another glider and cannot be established via a radio call.

NTSB Probable Cause Narrative

The failure of the pilot of N777UN to exit the thermal upon losing visual contact with the other gliders, resulting in a midair collision.

Event Information

Type of Event Accident
Event Date 8/9/2008
Event Day of the Week Saturday
Time of Event 1532
Event Time Zone Central Daylight Time
Event City Brackettville
Event State TEXAS
Event Country --
Zipcode of the event site 78801
Event Date Year 2008
Event Date Month 8
MidAir Collision Indicator Yes
On Ground Collision occurred ? No
Event Location Latitude 291240N
Event Location Longitude 0994436W
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 --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1525 Central Daylight Time
Direction of event from weather observation facility (degrees) 280
Weather Observation Facility ID UVA
Elevation of weather observation facility 942
Distance of event from weather observation facility (units?) 45
Time Zone of the weather observation CDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height 7000
Sky/Lowest/Cloud Conditions Scattered
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) 37
Dew Point at event time (in degress fahrenheit) 19
Wind Direction (degrees magnetic) 110
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 11
Wind Velocity Indicator --
Wind Gust Indicator Gusting
Wind Gust (knots) 14
Altimeter Setting at event time (in. Hg) 29.87
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 1
Injury Total Serious 1
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 24602
NTSB Notification Source FAA ASW ROC
NTSB Notification Date Aug 9 2008 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Jul 24 2009 11:43AM
User who most recently changed record johb
Basic weather conditions Visual Meteorological Cond
FAA District Office San Antonio FAA Flight Standards District Office

Aircraft Involved

Aircraft #1

Aircraft #2

Aircraft Registration Number N777UN N110RG
NTSB Number DEN08LA137A DEN08LA137B
Missing Aircraft Indicator -- --
Federal Aviation Reg. Part Part 91: General Aviation Part 91: General Aviation
Type of Flight Plan filed None None
Flight plan Was Activated? No No
Damage Substantial Substantial
Aircraft Fire None None
Aircraft Explosion None None
Aircraft Manufacturer's Full Name Schempp-Hirth AB Sportine Aviacija
Aircraft Model Ventus 2A Genesis 2
Aircraft Series Identifier -- --
Aircraft Serial Number 74 2005
Certified Max Gross Weight 1157 1157
Aircraft Category Glider Glider
Aircraft Registration Class -- --
Aircraft is a homebuilt? No No
Flight Crew Seats -- --
Cabin Crew Seats -- --
Passenger Seats -- --
Total number of seats on the aircraft 1 1
Number of Engines -- 0
Fixed gear or retractable gear Retractable Retractable
Aircraft, Type of Last Inspection Annual Annual
Date of Last Inspection Dec 1 2007 12:00AM Feb 1 2008 12:00AM
Airframe hours since last inspection -- --
Airframe Hours 1283 500
ELT Installed Yes No
ELT Activated No No
ELT Aided Location of Event Site No No
ELT Type -- --
Aircraft Owner Name Robert Carl Michael Brooks
Aircraft Owner Street Address -- --
Aircraft Owner City Longmont Houston
Aircraft Owner State CO TX
Aircraft Owner Country USA USA
Aircraft Owner Zipcode 80503 77035
Operator is an individual? Yes Yes
Operator Name -- --
Operator Same as Owner? Yes Yes
Operator Is Doing Business As -- --
Operator Address Same as Owner? Yes Yes
Operator Street Address -- --
Operator City -- --
Operator State -- --
Operator Country -- --
Operator Zip code -- --
Operator Code -- --
Owner has at least one certificate None 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) Air Race/Show Air Race/Show
Second Pilot on Board No No
Departure Point Same as Event No No
Departure Airport Code UVA UVA
Departure City Uvalde Uvalde
Departure State TX TX
Departure Country USA USA
Departure Time 1300 1300
Departure Time Zone CDT CDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere dest & departure same, accident can occur anywhere
Destination Airport Code UVA UVA
Destination City Uvalde Uvalde
Destination State TX TX
Destination Country USA USA
Specific Phase of Flight Climb Climb
Report sent to ICAO? -- --
Evacuation occurred -- --
Date of most recent change to record Oct 7 2008 12:13PM --
User who most recently changed record kaij --
Since inspection or accident Last Inspection Last Inspection
Event Location Runway Number and Location N/A N/A
Runway Length -- --
Runway Width -- --
Sight Seeing flight No No
Air Medical Flight No No
Medical Flight -- --