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
January 20, 2023 · Eiriavion Oy PIK-20D · N1NZ
Benton, TN
Overview
Report Status
Probable Cause
Event Type
Accident
Date
January 20, 2023
Injury Outcomes
1 injury (1 minor injury)
Location
Benton, TN
Aircraft
Eiriavion Oy PIK-20D (1978)
Tail Number
N1NZ
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
ERA23LA115
The glider pilot reported that the day was a “good ridge day” and about 45 minutes into the flight he saw two large birds flying in a thermal. He attempted to enter the same thermal that the birds were in, turning towards a mountain ridge, the same direction the birds were circling. The pilot was carried out of the thermal and entered an area of sinking air which resulted in the glider impacting the ridge. The impact resulted in substantial damage to the wings and fuselage. The pilot reported that there were no preaccident mechanical malfunctions or failures with the glider that would have precluded normal operation.
NTSB Probable Cause
The pilot’s decision to turn toward a mountain ridge in a thermal, which resulted in a collision with terrain.
Full Narrative
The glider pilot reported that the day was a “good ridge day” and about 45 minutes into the flight he saw two large birds flying in a thermal. He attempted to enter the same thermal that the birds were in, turning towards a mountain ridge, the same direction the birds were circling. The pilot was carried out of the thermal and entered an area of sinking air which resulted in the glider impacting the ridge. The impact resulted in substantial damage to the wings and fuselage. The pilot reported that there were no preaccident mechanical malfunctions or failures with the glider that would have precluded normal operation.
Flight
Event TypeAccident
Event Time08:40 EST
Nearest Airport0nm
Flight Plan FiledNone
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftEiriavion Oy PIK-20D
Tail NumberN1NZ
Aircraft CategoryGli
DamageSubstantial
Operating RulePart 91
Engines0
Engine TypeNone
Engine DetailsNone · None
Seats1
People & Injuries
Injury Summary1 injury (1 minor injury)
Fatal0
Serious0
Minor1
Uninjured0
Total1
Crew 1Age 64 · Second Class · Minor
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility10 sm
CeilingNone
Temperature / Dew Point50 F / 28 F
Altimeter30.14 inHg
Observation Time14:15
Weather SourceWFAC