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
October 2, 1992 · Clatanoff Rotorway EXEC Rotorway E · N41KC
Wimberley, TX
Overview
Report Status
Probable Cause
Event Type
Accident
Date
October 2, 1992
Injury Outcomes
1 injury (1 fatality)
Location
Wimberley, TX
Aircraft
Clatanoff Rotorway EXEC Rotorway E
Tail Number
N41KC
Operator
Clatanoff Kevin J
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
FTW93FA002
A PILOT WAS IN CRUISE FLIGHT IN HIS HOMEBUILT HELICOPTER WHEN AN INFLIGHT BREAKUP WAS INITIATED BY THE SKIN DELAMINATION OF ONE OF HIS MAIN ROTOR BLADES. THE DYNAMIC IMBALANCE AND DIVERGENT FLAPPING OF HIS ROTOR SYSTEM CAUSED THE MAIN ROTOR BLADES TO STRIKE THE TAILBOOM AND PORTIONS OF THE AIRFRAME. WITNESSES REPORTED AN EXPLOSION AND INFLIGHT FIRE PRIOR TO THE UNCONTROLLED DESCENT TO THE GROUND. THE WRECKAGE WAS DISPERSED FOR 750 YARDS.
NTSB Probable Cause
THE DELAMINATION OF THE SKIN ON A MAIN ROTOR BLADE.
Full Narrative
A PILOT WAS IN CRUISE FLIGHT IN HIS HOMEBUILT HELICOPTER WHEN AN INFLIGHT BREAKUP WAS INITIATED BY THE SKIN DELAMINATION OF ONE OF HIS MAIN ROTOR BLADES. THE DYNAMIC IMBALANCE AND DIVERGENT FLAPPING OF HIS ROTOR SYSTEM CAUSED THE MAIN ROTOR BLADES TO STRIKE THE TAILBOOM AND PORTIONS OF THE AIRFRAME. WITNESSES REPORTED AN EXPLOSION AND INFLIGHT FIRE PRIOR TO THE UNCONTROLLED DESCENT TO THE GROUND. THE WRECKAGE WAS DISPERSED FOR 750 YARDS.
Flight
Event TypeAccident
Event Time15:45 CDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireBoth
Aircraft ExplosionIflt
Aircraft
AircraftClatanoff Rotorway EXEC Rotorway E
Tail NumberN41KC
Aircraft CategoryHeli
DamageDestroyed
OperatorClatanoff Kevin J
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsRotorway · RW 152 · Reciprocating · 152
Seats2
People & Injuries
Injury Summary1 injury (1 fatality)
Fatal1
Serious0
Minor0
Uninjured0
Total1
Crew 1Age 52 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind30° @ 7 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point45 C
Altimeter29.00 inHg
Observation Time20:36
Weather SourceWFAC