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 7, 1986 · Piper PA-25 · N6190Z
Williston, ND
Overview
Report Status
Preliminary report
Event Type
Accident
Date
June 7, 1986
Injury Outcomes
No injuries (1 uninjured)
Location
Williston, ND
Aircraft
Piper PA-25
Tail Number
N6190Z
Operator
John O Winden
Injuries
None
Aircraft Damage
Substantial
NTSB Number
DEN86LA157
PLT STATED THAT HE WAS UNFAMILIAR WITH THE GEOGRAPHICAL AREA ON THIS FLT. HE ALSO STATED, 'I WAS PAYING ATTENTION TO THE PWR LINES AND ROAD AND DID NOT REALIZE THE HILL OUT FRONT WAS AS HIGH AS IT WAS...I ATTEMPTED TO TURN BACK OUT, BUT WITH DOWNWIND IT BLEW ME INTO HILLSIDE.' THE WIND WAS REPORTED BY THE PLT TO BE BLOWING AT 10 KNOTS.
Full Narrative
PLT STATED THAT HE WAS UNFAMILIAR WITH THE GEOGRAPHICAL AREA ON THIS FLT. HE ALSO STATED, 'I WAS PAYING ATTENTION TO THE PWR LINES AND ROAD AND DID NOT REALIZE THE HILL OUT FRONT WAS AS HIGH AS IT WAS...I ATTEMPTED TO TURN BACK OUT, BUT WITH DOWNWIND IT BLEW ME INTO HILLSIDE.' THE WIND WAS REPORTED BY THE PLT TO BE BLOWING AT 10 KNOTS.
Flight
Event TypeAccident
Event Time13:20 MDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftPiper PA-25
Tail NumberN6190Z
Aircraft CategoryAir
DamageSubstantial
OperatorJohn O Winden
Operating RulePart 137
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · 150 · Reciprocating · 150
Seats1
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 64 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind330° @ 6 kt, gusting 15 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point46
Altimeter29.00 inHg
Observation Time19:50
Weather SourceWFAC