Overall Trends
Total, fatal, and serious accidents in the selected range.
Premium research interface
The modern interface for aviation safety intelligence.
Search investigations, review source evidence, monitor watched reports, and trace long-term patterns from one calm, data-first workspace.
63k+
Reports indexed
1940-2026
Coverage
Recent
Last data refresh
Search everything
Fast key and full-text search with live filters, watches, and precise metadata.
Use quotes for exact phrase matches (for example "fuel selector valve").
Featured Report
Safety trends by operating rule
Track fatal and non-fatal accident patterns across Part 91, Part 135, and Part 121 operations.
Loading trend charts…
High-signal investigations
Major cases, deep-report coverage, and investigation media across decades of NTSB history.
Browse the aviation graph
Move quickly by aircraft, airport, operator, and time with indexes built for research, not wandering.
Last Data Update
By Decade
By Month
Aircraft Manufacturer
More manufacturersAirports
More airportsOperators
More operatorsAbout
Aviation safety reports, made easier to study
NTSB Reports is an independent research and search tool for public aviation accident and incident records. It brings NTSB aviation reports, structured fields, docket files, extracted figures, photos, videos, and update history into one searchable interface.
The goal is practical safety education: make it faster to find relevant investigations, compare similar events, review factual records, and understand the evidence behind probable-cause and preliminary reports.
The investigative work and source records belong to the National Transportation Safety Board and the published investigation record. This site is not affiliated with or endorsed by the NTSB.
FAQs
NTSB Report
June 22, 1991 · Rolladen-Schneider LS-6 · N6MN
Boerne, TX
Overview
Report Status
Probable Cause
Event Type
Accident
Date
June 22, 1991
Injury Outcomes
No injuries (1 uninjured)
Location
Boerne, TX
Aircraft
Rolladen-Schneider LS-6
Tail Number
N6MN
Operator
Gene Sprague
Injuries
None
Aircraft Damage
Substantial
NTSB Number
FTW91LA119
THE GLIDER PILOT RELEASED AT A LOW ALTITUDE AND IMMEDIATELY COMMENCED A SEARCH FOR THERMAL ACTIVITY. UPON DETERMINING THAT NO THERMAL ACTIVITY WAS PRESENT, AN ATTEMPT TO RETURN TO THE AIRPORT WAS INITIATED. DUE TO A SINK CONDITION AND THE LOW ALTITUDE THE GLIDER WAS UNABLE TO REACH THE FIELD AND CONDUCTED AN OFF AIRPORT LANDING. TOUCHDOWN OCCURRED IN A RIGHT SKID AS A RESULT OF THE RIGHT WING CONTACTING FIVE FOOT TALL WEEDS.
NTSB Probable Cause
THE PILOT'S FAILURE TO RELEASE AT A HIGHER ALTITUDE PRIOR TO LOOKING FOR THERMAL ACTIVITY AND THE PILOT'S POOR IN-FLIGHT PLANNING. FACTORS WERE THE DOWNDRAFT AND THE TALL GRASS ENCOUNTERED DURING LANDING.
Full Narrative
THE GLIDER PILOT RELEASED AT A LOW ALTITUDE AND IMMEDIATELY COMMENCED A SEARCH FOR THERMAL ACTIVITY. UPON DETERMINING THAT NO THERMAL ACTIVITY WAS PRESENT, AN ATTEMPT TO RETURN TO THE AIRPORT WAS INITIATED. DUE TO A SINK CONDITION AND THE LOW ALTITUDE THE GLIDER WAS UNABLE TO REACH THE FIELD AND CONDUCTED AN OFF AIRPORT LANDING. TOUCHDOWN OCCURRED IN A RIGHT SKID AS A RESULT OF THE RIGHT WING CONTACTING FIVE FOOT TALL WEEDS.
Flight
Event TypeAccident
Event Time14:45 CDT
Nearest AirportBOERNE (0nm N)
Runway5
Runway Length3000 ft
Runway Width60 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftRolladen-Schneider LS-6
Tail NumberN6MN
Aircraft CategoryGli
DamageSubstantial
OperatorGene Sprague
Operating RulePart 91
Engines0
Engine TypeUnknown
Engine DetailsUnknown
Seats1
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 66 · None
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility15 sm
CeilingNone
Temperature / Dew Point10 C / 0 C
Altimeter0
Weather SourcePILO