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
September 25, 1983 · Eipper Quicksilver MX 11 Quicksilve · N4412L
Erie, CO
Overview
Report Status
Preliminary report
Event Type
Accident
Date
September 25, 1983
Injury Outcomes
1 injury (1 minor injury), 1 uninjured
Location
Erie, CO
Aircraft
Eipper Quicksilver MX 11 Quicksilve
Tail Number
N4412L
Operator
Feathaire Aviation
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
DEN83FTE13
THE PLT OF THE 2 PLACE, ULTRALIGHT VEHICLE STATED THAT HE WAS DEMONSTRATING A POWER OFF GLIDE WHEN A SEVERE SINK DEVELOPED. HE APPLIED FULL POWER; HOWEVER, HE WAS UNABLE TO ARREST THE DESCENT PRIOR TO GROUND IMPACT. THE PLT REPORTED THAT THE WIND WAS VARIABLE AT 5 GUSTING 10 KTS.
Full Narrative
THE PLT OF THE 2 PLACE, ULTRALIGHT VEHICLE STATED THAT HE WAS DEMONSTRATING A POWER OFF GLIDE WHEN A SEVERE SINK DEVELOPED. HE APPLIED FULL POWER; HOWEVER, HE WAS UNABLE TO ARREST THE DESCENT PRIOR TO GROUND IMPACT. THE PLT REPORTED THAT THE WIND WAS VARIABLE AT 5 GUSTING 10 KTS.
Flight
Event TypeAccident
Event Time11:00 MDT
Nearest Airport2nm NNW
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftEipper Quicksilver MX 11 Quicksilve
Tail NumberN4412L
Aircraft CategoryUltr
DamageSubstantial
OperatorFeathaire Aviation
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsRotax · 503 · Reciprocating
Seats2
People & Injuries
Injury Summary1 injury (1 minor injury), 1 uninjured
Fatal0
Serious0
Minor1
Uninjured1
Total2
Crew 1Age 21 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind5 kt, gusting 10 kt
Visibility20 sm
CeilingNone
Temperature / Dew Point0 C
Altimeter0
Weather SourcePILO