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 25, 1985 · Silvaggio Cassutt 111M Cassutt 11 · N4AS
Plattsburg, MO
Overview
Report Status
Preliminary report
Event Type
Accident
Date
October 25, 1985
Injury Outcomes
1 injury (1 serious injury)
Location
Plattsburg, MO
Aircraft
Silvaggio Cassutt 111M Cassutt 11
Tail Number
N4AS
Operator
Terry D Blakeney
Injuries
Serious
Aircraft Damage
Substantial
NTSB Number
MKC86FA017
THE ACFT WAS LEVEL, IN CRUISE WHEN THE PLT NOTICED HIGH ENG TEMPERATURES. HE STATED THAT HE STARTED A SHALLOW CLIMB AND HEADED FOR THE NEAREST ARPT. EN ROUTE TO NEAREST ARPT, SMOKE CAME INTO THE COCKPIT AND THE PLT HEARD A LOUD NOISE THAT WAS ACCOMPANIED BY SMOKE AND FLAMES INSIDE THE ENG COMPARTMENT. PLT SHUT OFF FUEL VALVE. THE ACFT WAS TOO HIGH AND TOO FAST AS IT APPROACHED THE ARPT. THE PLT TRIED S TURNS BUT RAN OUT OF CONTROL DURING THE SECOND S. THE ACFT TOUCHED DOWN 100 FT TO THE WEST OF THE RWY AND 40 DEGS OFF THE RWY HEADING. THE RIGHT WING HIT STEEL FENCE POSTS AND BARBED WIRE. AFTER GROUND IMPACT THE ACFT FLIPPED UP AND AROUND AND STOPPED ON THE ARPT PROPERTY. INVESTIGATION REVEALED A BROKEN PISTON, A BROKEN PISTON PIN AND A SEPARATED CYLINDER HEAD ON THE NUMBER FOUR CYLINDER.
Full Narrative
THE ACFT WAS LEVEL, IN CRUISE WHEN THE PLT NOTICED HIGH ENG TEMPERATURES. HE STATED THAT HE STARTED A SHALLOW CLIMB AND HEADED FOR THE NEAREST ARPT. EN ROUTE TO NEAREST ARPT, SMOKE CAME INTO THE COCKPIT AND THE PLT HEARD A LOUD NOISE THAT WAS ACCOMPANIED BY SMOKE AND FLAMES INSIDE THE ENG COMPARTMENT. PLT SHUT OFF FUEL VALVE. THE ACFT WAS TOO HIGH AND TOO FAST AS IT APPROACHED THE ARPT. THE PLT TRIED S TURNS BUT RAN OUT OF CONTROL DURING THE SECOND S. THE ACFT TOUCHED DOWN 100 FT TO THE WEST OF THE RWY AND 40 DEGS OFF THE RWY HEADING. THE RIGHT WING HIT STEEL FENCE POSTS AND BARBED WIRE. AFTER GROUND IMPACT THE ACFT FLIPPED UP AND AROUND AND STOPPED ON THE ARPT PROPERTY. INVESTIGATION REVEALED A BROKEN PISTON, A BROKEN PISTON PIN AND A SEPARATED CYLINDER HEAD ON THE NUMBER FOUR CYLINDER.
Flight
Event TypeAccident
Event Time18:10 CDT
Nearest AirportPlattsburg (0nm N)
Runway36
Runway Length2115 ft
Runway Width24 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftSilvaggio Cassutt 111M Cassutt 11
Tail NumberN4AS
Aircraft CategoryAir
DamageSubstantial
OperatorTerry D Blakeney
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · A65-8 · Reciprocating · 80
Seats1
People & Injuries
Injury Summary1 injury (1 serious injury)
Fatal0
Serious1
Minor0
Uninjured0
Total1
Crew 1Age 41 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind140° @ 9 kt
Visibility20 sm
CeilingNone
Temperature / Dew Point70 F / 43 C
Altimeter30.00 inHg
Observation Time22:46
Weather SourceWFAC