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 27, 1987 · Beech V35 · N111MS
Clearlake, CA
Overview
Report Status
Preliminary report
Event Type
Accident
Date
June 27, 1987
Injury Outcomes
No injuries (3 uninjured)
Location
Clearlake, CA
Aircraft
Beech V35
Tail Number
N111MS
Injuries
None
Aircraft Damage
Substantial
NTSB Number
LAX87LA246
DURING A CROSS COUNTRY FLIGHT THE ENGINE EXPERIENCED A LOSS OF POWER. THE PLT MADE A FORCED LANDING ON A ROAD WHERE DURING THE LANDING ROLL THE ACFT COLLIDED WITH A FENCE AND EVENTUALLY CAME TO REST IN A DITCH. INSPECTION OF THE ENGINE REVEALED EXTENSIVE DETONATION DAMAGE IN CYLINDERS 3, 4, AND 6. A FUEL SAMPLE WAS TAKEN WHICH REVEALED A NOTICABLE QUANTITY OF RESIDUE PARTICLES CONTAINING SILICON, IRON, AND ALUMINUM. THE SAMPLE MET THE MINIMUM ASTM STANDARDS FOR 100LL FUEL.
Full Narrative
DURING A CROSS COUNTRY FLIGHT THE ENGINE EXPERIENCED A LOSS OF POWER. THE PLT MADE A FORCED LANDING ON A ROAD WHERE DURING THE LANDING ROLL THE ACFT COLLIDED WITH A FENCE AND EVENTUALLY CAME TO REST IN A DITCH. INSPECTION OF THE ENGINE REVEALED EXTENSIVE DETONATION DAMAGE IN CYLINDERS 3, 4, AND 6. A FUEL SAMPLE WAS TAKEN WHICH REVEALED A NOTICABLE QUANTITY OF RESIDUE PARTICLES CONTAINING SILICON, IRON, AND ALUMINUM. THE SAMPLE MET THE MINIMUM ASTM STANDARDS FOR 100LL FUEL.
Flight
Event TypeAccident
Event Time13:00 PDT
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBeech V35
Tail NumberN111MS
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · IO-520-B · Reciprocating · 285
Seats6
People & Injuries
Injury SummaryNo injuries (3 uninjured)
Fatal0
Serious0
Minor0
Uninjured3
Total3
Crew 1Age 40 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind160° @ 8 kt
Visibility7 sm
CeilingNone
Temperature / Dew Point68 F / 55
Altimeter30.00 inHg
Observation Time20:45
Weather SourceWFAC